bluuebunny/crossref_metadata_2025 huggingface dataset:
The reduction of the leakage field of the injection septum magnet in main ring of J-PARC
Authors: Shibata T , Matsumoto N , Ishii K , Sugimoto T , Matsumoto H
Published: January 2023

A new injection septum magnet 1 (Inj-SM1) was installed in the Main Ring (MR) of J-PARC in 2016 as an upgrade. We confirmed that the leakage field upstream from the circulating duct of Inj-SM1 was sufficiently smaller than that for the previous Inj-SM1. Nevertheless, we attempted to further reduce the leakage field by using a new magnetic shield to achieve a higher proton beam intensity. In 2017, the first version of the new magnetic shield was produced and installed. The strength of the leakage field with the shield was ≈30% of that without the shield; however, the magnetic field of a quadrupole magnet (QM) upstream of Inj-SM1 was reduced to below the permissible limit, ≈0.1% of the total field integral of the QM, from the point of view of beam optics. Consequently, the first version failed. A second shield, for which the defects of the first version were fixed, was produced in 2018. The strength of the leakage field of Inj-SM1 with the second shield was reduced to ≈30% of that without the shield, while that of the QM was maintained. Thus, we decided to use the second shield for beam operation starting in November 2019. We confirmed that the impact of the leakage field on the circulating beam was 1/20 of that of the previous Inj-SM1.
The new high field septum magnet for upgrading of fast extraction in main ring of J-PARC
Authors: Shibata T , Ishii K , Iwata S , Sugimoto T , Matsumoto N , Matsumoto H , Fan K
Published: January 2023

The upgrade of the beam power of J-PARC Main Ring to 750 kW by reducing the cycle from 2.48 s to 1.3 s is underway, and the upgrade of the four high-field (HF) septa will be completed by summer of 2023. The operation test of one HF septum, SM31, was conducted in 2020. First trial was 1 Hz operation test, and we confirmed the joule heating at the magnetic coil was lower than limit. Second was magnetic field measurement. We obtained a good linearity between the applied current and the gap field without saturation. The field integral of the gap field was measured to estimate the optimal current for beam extraction, and we found it is 3,400 A. We compared the gap field between in the neutrino line and that in the beam abort line, then we found the longitudinal distributions have a small discrepancy but it was acceptable. The large leakage field was observed around the end-fringes, therefore, in order to reduce the leakage field, we produced an additional duct shield for mounting in the circulating duct in 2022. We verified that the additional duct shield reduced the leakage field to ≈2% of unshielded leakage field. The new SM31 and other two HF septa have been installed in MR by end of May 2022. The beam operation with the new HF septa will be started in June 2022.
Branch module for an inductive voltage adder for driving kicker magnets with a short circuit termination
Authors: Ruf J , Barnes M J , Dutheil Y , Kramer T , Sack M
Published: January 2023

For driving kicker magnets terminated in a short circuit, a branch module for an inductive voltage adder has been designed and assembled. The module has been designed for a maximum charging voltage of 1.2 kV and an output current of 200 A considering the current doubling due to the short circuit termination. It features three consecutive modes of operation: energy injection, freewheeling, and energy extraction. Therefore, the topology of the branch module consists of two independently controlled SiC MOSFET switches and one diode switch. In order not to extend the field rise time of the kicker magnet significantly beyond the magnet fill time, the pulse must have a fast rise time. Hence, the switch for energy injection is driven by a gate boosting driver featuring a half bridge of GaN HEMTs and a driving voltage of 80 V. Measurements of the drain source voltage of this switch showed a fall time of 2.7 ns at a voltage of 600 V resulting in a voltage rise time of 5.4 ns at the output terminated with a resistive load. To meet both the rise time and current requirements, a parallel configuration of four SiC MOSFETs was implemented.
Evaluation of geometrical precision and surface roughness quality for the additively manufactured radio frequency quadrupole prototype
Authors: Torims T , Cherif A , Delerue N , Pedretti M Foppa , Gruber S , Krogere D , Lopez E , Otto T , Pikurs G , Pozzi M , Ratkus A , Thielmann M , Vedani M , Vretenar M , Wagenblast P
Published: January 2023

A multidisciplinary collaboration within the I.FAST project teamed-up to develop additive manufacturing (AM) technology solutions for accelerators. The first prototype of an AM pure-copper Radio Frequency Quadrupole (RFQ) has been produced, corresponding to ¼ of a 4-vane RFQ. It was optimised for production with state-of-the-art laser powder bed fusion technology. Geometrical precision and roughness of the critical surfaces were measured. Although the obtained values were beyond standard RFQ specifications, these first results are promising and confirmed the feasibility of AM manufactured complex copper accelerator cavities. Therefore, further post-processing trials have been conducted with the sample RFQ to improve surface roughness. Algorithms for the AM technological processes have also been improved, allowing for higher geometrical precision. This resulted in the design of a full 4-vane RFQ prototype. At the time of the paper submission the full-size RFQ is being manufactured and will undergo through the stringent surface quality measurements. This paper is discussing novel technological developments, is providing an evaluation of the obtained surface roughness and geometrical precision as well as outlining the potential post-processing scenarios along with future tests plans.
TURBO: A novel beam delivery system enabling rapid depth scanning for charged particle therapy
Authors: Yap J SL , Sheehy S L , Steinberg A F , Norman H XQ , Appleby R B
Published: January 2023

Charged particle therapy (CPT) is a well-established modality of cancer treatment and is increasing in worldwide presence due to improved accelerator technology and modern techniques. The beam delivery system (BDS) determines the overall timing and beam shaping capabilities, but is restricted by the energy variation speed: energy layer switching time (ELST). Existing treatment beamlines have a ±1% momentum acceptance range, needing time to change the magnetic fields as the beam is delivered in layers at various depths across the tumour volume. Minimising the ELST can enable the delivery of faster, more effective and advanced treatments but requires an improved BDS. A possibility for this could be achieved with a design using Fixed Field Alternating Gradient (FFA) optics, enabling a large energy acceptance to rapidly transport beams of varying energies. A scaled-down, novel system – Technology for Ultra Rapid Beam Operation (TURBO) – is being developed at the University of Melbourne, to explore the potential of rapid depth scanning. Initial simulation studies, beam and field measurements, project plans and clinical considerations are discussed.
Upgrade of a proton therapy eye treatment nozzle using a cylindrical beam stopping device for enhanced dose rate performances
Authors: Gnacadja E , Hernalsteens C , Pauly N , Ramoisiaux E , Tesse R , Vanwelde M
Published: January 2023

Proton therapy is a well established treatment method for ocular cancerous diseases. General-purpose multi-room systems which comprise eye-treatment beamlines must be thoroughly optimized to achieve the performances of fully dedicated systems in terms of depth-dose distal fall-off, lateral penumbra, and dose rate. For eye-treatment beamlines, the dose rate is one of the most critical clinical performances, as it directly defines the delivery time of a given treatment session. This delivery time must be kept as low as possible to reduce uncertainties due to undesired patient movement. We propose an alternative design of the Ion Beam Applications (IBA) Proteus Plus (P+) eye treatment beamline, which combines a beam-stopping device with the already existing scattering features of the beamline. The design is modelled with Beam Delivery SIMulation (BDSIM), a Geant4-based particle tracking and beam-matter interactions Monte-Carlo code, to demonstrate that it increases the maximum achievable dose rate by up to a factor 3 compared to the baseline configuration. An in-depth study of the system is performed and the resulting dosimetric properties are discussed in detail.
A carbon minibeam irradiation facility concept
Authors: Mayerhofer M , Bencini V , Sammer M , Dollinger G
Published: January 2023

In minibeam therapy, the sparing of deep-seated normal tissue is limited by transverse beam spread caused by small-angle scattering. Contrary to proton minibeams, helium or carbon minibeams experience less deflection, which potentially reduces side effects. To verify this potential, an irradiation facility for preclinical and clinical studies is needed. This manuscript presents a concept for a carbon minibeam irradiation facility based on a LINAC design for conventional carbon therapy. A quadrupole triplet focuses the LINAC beam to submillimeter minibeams. A scanning and a dosimetry unit are provided to move the minibeam over the target and monitor the applied dose. The beamline was optimized by TRAVEL simulations. The interaction between beam and these components and the resulting beam parameters at the focal plane is evaluated by TOPAS simulations. A transverse beamwidth of < 100 μm (sigma) and a peak-to-valley (energy) dose ratio of > 1000 results for carbon energies of 100 MeV/u and 430 MeV/u (∼ 3 cm and 30 cm range in water) whereby the average beam current is ∼ 30 nA. Therefore, the presented irradiation facility exceeds the requirements for hadron minibeam therapy.
Slow extraction modelling for NIMMS hadron therapy synchrotrons
Authors: Taylor R , Benedetto E , Sapinski M , Pasternak J
Published: January 2023

The Next Ion Medical Machine Study (NIMMS) is an umbrella R&D programme for CERN accelerator technologies targeting advanced accelerator options for proton and light ion therapy. In collaboration with the European programme HITRIplus, one area of study is slow extraction which is required to deliver a uniform beam spill for radiotherapy treatment. Several techniques use the third-order resonance to extract hadrons; these include betatron core driven extraction and radiofrequency knock-out. Flexible simulation tools using these techniques were prepared and initially benchmarked with results from the literature that used the Proton-Ion Medical Machine Study (PIMMS) design. The limits of the current PIMMS design were then pushed to evaluate its compatibility to deliver 10x higher intensity ion beams, and using increased extraction rates.
Beam optics study for a potential VHEE beam delivery system
Authors: Robertson C S , Burrows P N , Dosanjh M , Latina A , Gerbershagen A
Published: January 2023

VHEE (Very High Energy Electron) therapy can be superior to conventional radiotherapy for the treatment of deep seated tumours, whilst not necessarily requiring the space and cost of proton or heavy ion facilities. Developments in high gradient RF technology have allowed electrons to be accelerated to VHEE energies in a compact space, meaning that treatment could be possible with a shorter linac. A crucial component of VHEE treatment is the transfer of the beam from accelerator to patient. This is required to magnify the beam to cover the transverse extent of the tumour, whilst ensuring a uniform beam distribution. Two principle methodologies for the design of a compact transfer line are presented. The first of these is based upon a quadrupole lattice and optical magnification of beam size. A minimisation algorithm is used to enforce certain criteria on the beam distribution at the patient, defining the lattice through an automated routine. Separately, a dual scattering-foil based system is also presented, which uses similar algorithms for the optimisation of the foil geometry in order to achieve the desired beam shape at the patient location.
A compact synchrotron for advanced cancer therapy with helium and proton beams
Authors: Vretenar M , Angolettai M E , Bisoffi G , Borburgh J , Bottura L , Paļskis K , Taylor R , Tranquille G , Benedetto E , Sapinski M
Published: January 2023

Recent years have seen an increased interest in the use of helium for radiation therapy of cancer. Helium ions can be more precisely delivered to the tumour than protons or carbon ions, presently the only beams licensed for treatment, with a biological effectiveness between the two. The accelerator required for helium is considerably smaller than a standard carbon ion synchrotron. To exploit the potential of helium therapy and of other emerging particle therapy techniques, in the framework of the Next Ion Medical Machine Study (NIMMS) at CERN, the design of a compact synchrotron optimised for acceleration of proton and helium beams has been investigated. The synchrotron is based on a new magnet design, profits from a novel injector linac, and can provide both slow and fast extraction for conventional and FLASH therapy. Production of mini-beams, and operation with multiple ions for imaging and treatment are also considered. This accelerator is intended to become the main element of a facility devoted to a parallel programme of cancer research and treatment with proton and helium beams, to both cure patients and contribute to the assessment of helium beams as a new tool to fight cancer.
A novel intensity compensation method to achieve energy independent beam intensity at the patient location for cyclotron based proton therapy facilities
Authors: Maradia Vivek , Meer David , Weber Damian C , Lomax Antony J , Psoroulas Serena
Published: January 2023

In cyclotron-based proton therapy facilities, an energy selection system is typically used to lower the beam energy from the fixed value provided by the accelerator (250/230 MeV) to the one needed for the treatment (230-70 MeV). Such a system has the drawback of increase beam emittance and introducing an energy-dependent beam current at the patient location, resulting in energy dependent beam intensity ratios of about 103 between high and low energies. This complicates treatment delivery and challenges patient safety systems. As such, we propose the use of a dual energy degrader method that can reduce beam intensity for high-energy beams. The first degrader is made of high Z material and the second is made of low Z material and are placed next to each other. For high energies (190-230 MeV), we use only the first degrader to increase beam emittance after the degrader and thus lose intensity in the emittance selection collimators. For intermediate energy beams (110-190 MeV) we use the combination of both degraders, whereas for low energy beams (70-110 MeV), only the second degrader limits the increase in emittance. With this approach, energy-independent beam intensities at the patient location can be achieved, whilst localizing beam losses around the degrader.
GNSS/IMU Sensor Fusion Performance Comparison of a Car Localization in Urban Environment Using Extended Kalman Filter
Authors: Erfianti R , Asfihani T , Suhandri H F
Published: January 2023

Global Navigation Satellite System (GNSS) and Inertial Measurement Unit (IMU) are popular navigation sensor for position fixing technique and dead reckoning system that complement each other. GNSS can provide accurate position and velocity information when it establishes a Line of Sight (LOS) with a minimum of four satellites. However, this accuracy can decrease due to signal outage, jamming, interference, and multipath effects. On the other hand, the IMU has the advantage of measuring the platform’s orientation with a high-frequency update and is not affected by environmental conditions. However, a drift effect causes the measurement errors to accumulate. Several studies have demonstrated the fusion of both sensors in terms of the Extended Kalman Filter (EKF). This study conduct sensor fusion for car localization in an urban environment based on the loosely coupled integration scheme. In order to improve the sensor fusion performance, pre-processing GNSS and IMU data were applied. The result shows that pre-processing DGNSS and IMU filtering can increase the accuracy of the integrated navigation solution up to 80.02% in the east, 80.13% in the north, and 89.45% in the up direction during the free outage period.
An Analysis of the Three-Dimensional Modelling Using LiDAR Data and Unmanned Aerial Vehicle (UAV) (Case Study: Institut Teknologi Sepuluh Nopember, Sukolilo Campus)
Authors: Ramadhani Anisa Nabila Rizki
Published: January 2023

The process of modelling a three-dimensional city in the Institut Teknologi Sepuluh Nopember, Sukolilo Campus, can be carried out using a semi-automatic method with a model-driven approach to update the three-dimensional model using LiDAR and orthophoto data in 2016 into a three-dimensional model of several new objects using UAV data acquired in 2021. The application of building footprint segmentation, roof modification, combination of CGA rules, and facade texture can represent a three-dimensional city model according to a certain level of detail or LOD so that 1236 building models are obtained from the 2016 LiDAR data and 104 new building models are added from the UAVs in 2021. The results of the accuracy test analysis of the 3D modelling with LiDAR data sources and UAV data showed that all model accuracy values have met the LOD 2.1 standard according to the refined level of details standard. Based on the level of detail analysis assessment, the average completeness of the model achieved is 87.49%. Meanwhile, the correctness value that was successfully formed by the model was 94.08%, and finally the quality value of the resulting model was 82.79%. Based on SNI 03-1733-2004, the calculation of the completeness and correctness of the model has met the standard, which is more than 85% of the model approach with the original object in the field. Meanwhile, for the quality value of the resulting model, it is still 2.21% of the allowed tolerance value.
Determination of a new gravimetric geoid modelling for Sudan using the least-squares collocation technique
Authors: Osman Anas Sharafeldin Mohamed , Anjasmara Ira Mutiara
Published: January 2023

The main purpose of this study is to compute a new gravimetric geoid model for Sudan by using the least-square collocation technique (LSC method) and applying the remove-compute-restore (RCR) technique. The computation of the model contains different datasets which are the gravity contribution of the model GO_CONS_GCF_2_TIM_R6e degree/order 300, BGI free-air gravity dataset in Sudan, GPS/levelling data, and high-resolution topographic information from ASTER digital elevation model. The “residual gravity anomalies” were run through the GEOCOL program using the GRAVSOFT software package, and the effects were restored to calculate the quasi-geoid surface (height anomalies). The gravimetric geoid was computed by adding the (N − 𝜁
h
) separation term to the quasi-geoid and was fitted to the GPS and levelling data provided by Sudan. The accuracy of our gravimetric geoid model SDN-LSC-G22 of the area of Sudan and some areas of bordering countries has been investigated by using geoid undulations computed from GPS and levelling data and by investigating the differences between the geoids of the GGM models which are EGM2008 and SGG-UGM-2. Our gravimetric geoid model (SDN-LSC-G22) has indicated an accuracy of 17.4 cm, in terms of a standard deviation compared with 66 GPS and Leveling data distributed in the area of Khartoum (most of these points are control points and benchmarks). Also, we evaluated our gravimetric geoid model by using 19 points distributed in the area of Sudan, and they indicated a standard deviation of 51.3 cm. The overall accuracy of SDN-LSC-G22 compared with the geoid undulation of all GPS and levelling has indicated an STD of 34.1 cm. The model SDN-LSC-G22 has shown better accuracy and significant differences compared with the GGM models EGM2008 and SGG-UGM-2 in terms of the differences with the available GPS and levelling data which have shown ~17 cm differences using (Abdalla, 2009) GPS and levelling data. It has demonstrated STD of ~17 cm differences by using 66 GPS and levelling data. Therefore, the model SDN-LSC-G22 provided better improvements and reliable geoid heights over Sudan compared to EGM2008 and SGG-UGM-2 gravity field models.
Determination of Geoelectrical Strike To Investigate The Geological Structures In Surabaya And Gresik Areas
Authors: Lestari W , Widodo A , Warnana D D , Rivensky R S , Ilmawan R Z , Adausy T A
Published: January 2023

The Magnetotelluric data acquisition is performed with a certain coordinate system orientation, thus the possibility of the field measurement data would be not proper with the geological strike direction. Therefore, the information of geoelectrical strike is needed to enhance the quality of Magnetotelluric data interpretation where if the data had the similar direction with the geological strike thus it will be properly sufficient with the actual subsurface condition. A magnetotelluric study by utilized polar diagram was conducted to analyze the orientation of geoelectrical strike that are correlated with the geological structures in the Surabaya and Gresik areas. However, polar diagram analysis using phase tensor data has an ambiguity of +90° therefore additional analysis is carried out using tipper data. The results showed the geoelectrical strike direction is N315°E and it is slightly similar with the strike trend of geological structures anomaly. Meanwhile, the geological structures is generally characterized by low to medium value of resistivity contrasts around 30-500 ohm.m consisting of the Surabaya Kendeng Fault, Kendeng Kedung Waru Fault, anticline, and other expected faults.
Detection of Changes in Water Surface Area in Limboto Lake Using Landsat Data From 1990 to 2020
Authors: Yudha Imam Satria
Published: January 2023

Lake Limboto is included in the fifteen priority lakes due to its increasingly critical condition. Long-term observations of changes in the lake water surface area are carried out to understand the impact of changes better and protect the ecosystem of water resources. The use of remote sensing technology products in Landsat 4 TM, Landsat 5 TM, Landsat 7 ETM +, and Landsat 8 OLI satellite images and Google Earth Engine is a suitable combination to study the dynamics of Lake Limboto. The water index used are NDWI (Normalized Difference Water Index), MNDWI (Modified Normalized Difference Water Index), and AWEI (Automated Water Extraction Index). The water surface area of Lake Limboto changes every year, starting in 1990 with an area of 1,976 Ha, increasing in 2000 to 2,039 Ha, and the widest inundation of water surface in 2002 was 2,889 Ha, a decrease occurred in 2009 to 2,498 Ha, to become 1,843 Ha in 2020. The objects above the water surface also change yearly, from 6% in 1990-2000, increasing to 10% in 2009, reaching a 16% increase in 2014, and decreasing to 9% in 2020. This changing trend can be used as the basis for government policies in the management of Limboto Lake.
Dynamic Spatial Model of Settlement Land in Tsunami-Prone Areas, Carita District, Banten
Authors: Anfansyah R , Mutiara A , Arfah S , Putri M N , Sanjaya H , Anantasena Y
Published: January 2023

Carita District, Banten was one of the districts affected by the tsunami in the Sunda Strait in 2018. With 2.668 hectares of land cover changing mainly in agriculture and urban areas. The land cover affected by the tsunami in the Carita Area consists of horticulture (24.11 ha), rice fields (2.70 ha) and buildings (4.91 ha). Residential areas, infrastructure and service sectors, especially tourism are also affected. According to the Carita District 2022-2042 RDTR (Detailed Spatial Plan), Carita District is still a tsunami-prone area. The purpose of this research is to provide a residential area forecast with spatial models, patterns, and directions for residential area development in the Carita region over the next 20 years. The method used in this research uses a cellular automata algorithm and a dynamic spatial model that utilizes the results to obtain an analytic hierarchy process score from expertise in the Carita District. Based on the results of the analysis there is an increase in settlements of 697%, some of which expanded in the southern and northern areas of Carita District. The results of the simulations that have been carried out can be input for the Carita District government in the direction of land use development
Monitoring of Land Surface Temperature in Surabaya, Indonesia from 2013-2021 Using Landsat-8 Imagery and Google Earth Engine
Authors: Maulana J , Bioresita F
Published: January 2023

Surabaya is one of the big cities in Indonesia which experiences population increase every year due to urbanization. Population growth can cause changes in land cover such as vegetation into built-up areas and an increase in energy consumption. Changes in land cover and increased in energy consumption resulted changes in the average temperature of urban areas. This change can disrupt health and thermal comfort. Temperature changes can be analyzed using remote sensing technology by observing land surface temperature (LST). LST observations can be carried out using Landsat-8 OLI/TIRS image. Landsat-8 has ability to record data continuously and has good resolution for thermal analysis. Image data processing was performed using Google Earth Engine (GEE) due to its advantage in computing big data without the need for good computer specifications. GEE can perform time series data calculations so that the results obtained will be more numerous and better The results showed that the temperature in the city of Surabaya tends to change every year with an average temperature of 31°C. The mean LST in Surabaya City decreased significantly in 2016 by 4°C but increased again in 2017 with an increase of 1.5°C. In the following years, the LST value in the city of Surabaya continued to increase with a constant increase every year. There were more than 20 districts which have temperatures above average. Those districts were located in the center of Surabaya city extending from north to south. In the other side, the districts in the west and east of Surabaya have temperatures below average. There were 17districts experienced a decrease in temperature and 14 districts experienced an increase in temperature. Benowo, Tandes, and Pakal districts were the areas that experienced an average temperature increase. Meanwhile, the districts that experienced the highest decrease were Tegalsari, Wonokromo, and Genteng
Utilization of the Indices to Detect and Monitor the Landcover Changes of Mangroves
Authors: Habibullah Ilham , Sanjaya Hartanto , Nyoman Giri Putra I
Published: January 2023

Mangrove are a transitional ecosystem between land and sea along the coast and rivers that are influenced by tides. Information about mangroves is needed by using the use of cloud computing. The purpose of this study was to monitor mangroves and identify causes of changes in mangrove areas using NDVI (Normalized Difference Vegetation Index), MNDWI (Modified Normalized Vegetation Index), NDMI (Normalized Difference Vegetation Index), and GCVI (Green Chlorophyll Vegetation Index). The research method is Google Earth Engine with Random Forest Method approach. Based on this, we monitored changes in mangrove land cover in Karangsong Indramayu, Pandansari Kaliwlingi Brebes, Segara Anakan Cilacap for the period 1991-2021, 2011 and 2021. The results of this study are changes in mangrove area in Pandansari Kaliwlingi Brebes in 1991-2021 831.80 hectares, in 2011-2021 628.25 hectares, in 2001-2011 205.26 hectares but in 1991-2001 decreased by 1.71 hectares, for Karangsong Indramayu in 1991, 2001, 2011 and 2021 it decreased from 1991-2011 by 7.84 hectares, in 2001-2011 by 7.00 hectares, in 2011-2021 by 1.44 hectares. While in Segara Anakan in 1991-2001 it was 1384.14 hectares, in 2001-2011 it was 115.26 hectares, in 2011-2021 it was reduced to 850.12 hectares, in 1991-2021 it was 649.28 hectares.
Determination of the Provincial Sea Area Boundary in Indonesia Archipelagic Regions using Cartometric Method
Authors: Yuwono
Published: January 2023

The marine areas management authority for provinces in Indonesia has so far been 12 miles from the coastline. The Draft Law of Republic of Indonesia concerning the Development Acceleration of Archipelagic Regions, which has been proposed since 2017 and is currently waiting for its ratification. It gives wider authority to provinces with archipelagic characteristics. The basis for determining the territorial sea boundaries of a province with archipelagic characteristics uses the principle of an archipelagic state, which is to draw the outermost line from the islands in the province. The method used to determine the boundaries of the area is cartometric method. Cartometric method is tracing/drawing boundary lines on work maps and measuring/calculation of points positions, distance, and area coverage using base maps other map as complementary. If this Draft Law is successfully ratified, then the area of marine management for the province with archipelagic characteristics will increase and there will be hope for increased welfare. The results of the study in 3 (provinces) with archipelagic characteristics, namely North Maluku Province, Maluku Province, and Riau Islands Province showed an increase in marine management area between 72.36% - 158.46%.
International Conference on Modern and Sustainable Agriculture (ICOMSA): Building Future Agriculture for Better World
Authors: Wiyono S , Suwardi  , Syakir A M
Published: January 2023

The development of modern agriculture is inseparable from efforts to optimize agricultural land resources and increase sectoral competitiveness based on dynamic innovation following the challenges. Modern agriculture is characterized by applying technology and innovation that can be adapted to the conditions and needs of productive activities in the agricultural sector. Agricultural innovations can include technological and agricultural institutions' innovations that are in line with the times. Sustainable agriculture plays an essential role in sustaining natural resources for future generations. Sustainable agriculture emphasizes the need for the stability of natural ecosystems, including biological living systems and materials. This includes the maintenance of biological diversity, genetic resources, soil, water, and agro-climate resources, as well as environmental health and comfort. Moreover, the world is facing the challenge of global warming (the greenhouse effect). Modern and sustainable agriculture is essential for various problems in agriculture. Both are currently the focus of various stakeholders, such as farmers, researchers, and policymakers worldwide. Both are expected to become sustainable solutions to meet food and energy needs and minimize the impact of more significant environmental damage.

International Conference on Modern Sustainable Agriculture was virtually-held in collaboration between the Faculty of Agriculture, IPB University with The International Society for Southeast Asian Agricultural Sciences (ISSAAS) Indonesian Chapter and Indonesian Society for Agronomy (PERAGI). Prof. Arif Satria, Rector of IPB University, Indonesia and Dr. Suwardi, M.Agr., President of International Society for Southeast Asian Agricultural Sciences (ISSAAS) Indonesian Chapter had given their speech as the keynote speakers for this conference. This conference also had 8 notable invited speakers from various international universities and research centers who delivered their expertise in modern and sustainable agriculture: Prof. Abdul Rashid Muhamed Shariff from Universiti Putra Malaysia, Malaysia, Prof. Makoto Yokohari from The University of Tokyo, Japan, Prof. Salmah Yaakop, Universiti Kebangsaan Malaysia, Malaysia, Prof. Masayoshi Shigyo from Yamaguchi University, Japan, Prof. Byoung Ryong Jeong from Gyeongsang National University, Republic of Korea, Prof. Greta Formaglio from National Institute for Agricultural Research, France, Prof. Anas D Susila from IPB University, Indonesia, and Prof. Hadi Susilo Arifin from IPB University, Indonesia had given their speech as invited speakers for this conference.

List of Summary of Conference, Committee are available in this pdf.
Rhipsalis baccifera cuttings growth with different cutting segment numbers and planting media
Authors: Ichsanti D R , Aziz S A , Efendi D
Published: January 2023

A unique ornamental epiphytic cactus Rhipsalis baccifera has a segmented dangling plant structure. This plant has a tip of the shoot that has a beautiful reddish color. Determining the best cutting number segment and media type executed in this study. This experiment used a randomized block design with two factors and four replications. One and two cutting segment is the first factor. Planting media type, i.e., rice-hull charcoal, rice-hull charcoal + zeolite, rice-hull charcoal + chopped ferns, and rice-hull charcoal + pumice was the second factor. The percentage of rooted cuttings at 100% and the growth percentage was 96.85%. No interaction was found between the two factors. For the best cuttings growth, we could cultivate this species using two-segment cuttings or using rice-hull charcoal + chopped fern as media.
Cupping test of some varieties of Gayo arabica coffee at different altitudes in Central Aceh District
Authors: Tarigan E B , Randriani E
Published: January 2023

Aceh is one of the center of Indonesian arabica coffee which has unique taste and flavor. The variability of arabica coffee is very diverse due to soil, climate and altitude variations. Balittri-IAARD recently released arabica Gayo 1 variety originally from Central Aceh District. The purpose of this study was to evaluate the caffeine content and sensory differences of each Gayo 1 and Gayo 3 arabica coffee among a three-level grown altitude. Both varieties of coffee were grown at 900, 1300 and 1500 m asl in Central Aceh District. The sensory quality was tested by the cupping method following SCAA (Specialty Coffee Association of America) protocols. The caffeine content in Gayo 1 and Gayo 3 ranged from 1.14-1.70%, whereas the value was inclined from 900 to 1300 m asl and turned down at 1500 m asl. Cupping analysis of Gayo 1 and Gayo 3 had scores> 80; it was categorized as specialty coffee. Coffee was grown at 900 and 1300 m asl had an excellent category with a cupping score of 85-89.99. Meanwhile, Gayo coffee, grown at 1500 m asl, had a very good specialty category.
Evaluation of persistence, phytotoxicity, and biosafety of insecticide based on cajuput and patchouli oils
Authors: Lestari Mardiningsih Tri , Rohimatun
Published: January 2023

An excellent plant-based insecticide formula is effective against insect pests and must be safe against target plants and natural enemies of the problems. The study aimed to evaluate the persistence of cajuput and patchouli oil formulations under sun exposure to Nilaparvata lugens, their phytotoxicity on rice seedlings, and safety against predators Sycanus annnulicornis. The feed residue method was employed to conduct the persistence test. Phytotoxicity testing was carried out by spraying rice seedlings with oil formulations. Biosafety testing against predators was carried out using the dry-film contact method. Exposure to both oil preparations (patchouli oil: 0.02, 5.25; and 10.49% and cajuput oil: 0.02; 4.87, and 9.74%) under the sun for up to five days was still effective in causing mortality of N. lugens. Both oil formulas did not cause phytotoxicity in rice seedlings. Cajuput oil (concentrations of 4.87 and 9.74%) and patchouli oil (concentrations of 5.25 and 10.49%) were safe against nontarget insects, namely S. annulicornis.
Effect of bud position on the seedling growth of five citrus species
Authors: Sugiyatno A , Ashari H , Aji T G , Hardiyanto
Published: January 2023

This research aimed to evaluate the bud position in the vegetative phase of seedling growth derived from five citrus species. The research was carried out from April to July 2018 at the Tlekung Agricultural Research Installation. Factorial Randomized Block Design with two factors is the method in this study. The bud position taken as the propagation material was the first factor consisting of the top (36-50 cm from the base part of tree), middle (16-35 cm from the base part of tree), and bottom (0-15 cm from the base part of tree). The second factor was the citrus species consisting of mandarin cv. Madura, tangerine cv. Pontianak, pummelo cv. Giri Matang, lime cv. Sweet, and orange cv. Punten. There was no significant interaction between the bud position and species on all variables. However, regardless of bud position, citrus species showed significantly different in vegetative growth. The best average of 100% for the success of bud grafting, 36.89 days after bud grafting for the budburst time, 4.5 mm for the shoot diameter, 29.81 cm for the shoot length, and 19.55 leaves for the number of leaves was shown by orange cv. Punten. The results of this research sugges that the use of buds taken from different positions is recommended for citrus grafted bud.
Performance of three oil palm varieties on the East Coast of North Sumatra
Authors: Pradiko I , Hariyadi  , June T , Sujadi
Published: January 2023

The planting material, environmental conditions, and agricultural practices determine the oil palm performance. This research aimed to observe the performance of three oil palm varieties produced by IOPRI in Adolina Estate, Serdang Bedagai, North Sumatra. Adolina Estate is located on the eastern part and has a distinctive equatorial rainfall type with a sandy clay loam soil texture. The DyP Dumpy, DxP PPKS 540, and DxP Langkat varieties have been planted since 2010 in the same block with similar soil conditions and agricultural practices with total samples of 101, 147, and 124 trees, respectively. The growth parameters were height, length of rachis, petiole cross-section (PCS), and leaf area (LA), while the production parameters observed included the average bunch number, bunch weight, and yield. The results showed that DyP Dumpy had the slowest height growth with the most extended rachis length. DxP PPKS 540 has the highest average of PCS and LA, while the DxP Langkat had the fastest height growth and shortest rachis length. Furthermore, the DxP PPKS 540 variety produced the highest average yield, 24.85 tons ha−1, while DyP Dumpy and DxP Langkat have 23.19 tons ha−1 and 23.95 tons ha−1, respectively.
The role of leading food crops commodity in the regional development of Sirapit Subdistrict, Langkat Regency
Authors: Sari P N , Nasution Z
Published: January 2023

Food crop commodities are strategic national agricultural commodities. In 2018, the Ministry of Agriculture has chosen Langkat Regency as a food crop agrarian area. In line with this, the direction of developing food crop commodities should be able to become a leading sector for increasing community welfare and income in Langkat Regency. This study aimed to analyze the types of leading food crop commodities and examine the influence of supporting factors for leading food crop commodities on farmers’ incomes, as well as strategic priorities for developing food crop leading commodities. This type of research was descriptive research using primary and secondary data. The analytical methods used were Location Quotient (LQ) analysis, multiple linear regression, and Analytical Hierarchy Process (AHP). The results demonstrated that the leading food crop commodity with the most significant LQ value was rice at 2.65, followed by maize at 1.49 and soybean at 1.12. The results showed that the influence of the availability of supporting factors for food commodities, such as procurement of inputs for production facilities, technology, infrastructure, marketing, farmer institutions, and extension services, had a significance value of less than 0.05. The t count or the f count was more than t table or f table, so each variable affected farmers’ income. The results of the AHP revealed that infrastructure development was the main priority chosen in the approaches for developing superior food crops with alternative strategies, including maintenance of irrigation networks (0.409), development of reservoirs (0.275), development of farm roads (0.196) and sluice maintenance (0.120).
Response of rice peat humic acid ameliorant. saturated,. soil. culture. (SSC) within tidal. swamps
Authors: Yartiwi  , Ghulamahdi M , Sulistyono E , Lubis I , Sastro Y
Published: January 2023

Water management is the primary key to agricultural cultivation in the tidal swamps. Saturated soil culture (SSC) technology could decrease pyrite reduction more than conventional systems. The humic acid application will improve soil fertility by chelating Fe and Al. This study was conducted in the plastic house in Karya Bhakti Rantau Rasau Village Sub District Tanjabtim District Jambi Province, from March until June 2022. This study objective is to paddy response to the peat humic acid Saturated Soil Culture (SSC) within tidal swamps. This study used a design randomized. block complete with 2 factors and 4 replicates. The first factors. was a variety consisting. IR 64 and INPARA 4. The second factors was a peat humic acid concentration consisting of: without humic acid, 0,04 g/bucket, 0,08 g/bucket, and 0,12 g/bucket humic acid. Paddy was cultivated in the bucket with 10 kg of soil. Paddy cultivated tree plants per bucket. The research result showed that the INPARA 4 growth was better than IR 64. The lowest shoot Fe content was obtained on INPARA 4 variety with humic acid 0,12 g/bucket.
Leaf morphological characteristics of three Sonchus arvensis L. accessions with different harvest methods
Authors: Gardayudia A H , Melati M
Published: January 2023

Sonchus arvensisL. is a medicinal plant and is mainly taken from nature which over time will cause it to run out. This plant has rosette and inflorescence leaves commonly harvested simultaneously, but they can also be harvested separately. The experiment goal was to identify the leaf characteristics ofS. arvensiswith different methods of leaf harvest. The experiment used a factorial completely randomized block design. The three accessions ofS. arvensis, namely Lembang, Tawangmangu, and Banjararum as the first factor. Harvest methods: gradual and simultaneous harvest of rosette and inflorescence leaves as the second factor. The experiment was carried out at IPB experimental station in Cikarawang, Bogor, Indonesia (± 250 m asl, 6°30’-6°45’ S, 106°30’-106°45’ E), on clay-loam latosol soil. The results showed that the interaction between two factors influenced canopy diameter and the number of rosette leaves where Tawangmangu had the values of those variables were higher with simultaneous- than those with the gradual- harvest. Other leaf properties, namely the number of inflorescence leaves and leaf size of rosette leaves, were different amongS. arvensisaccessions. In conclusion, rosette and inflorescence leaves ofS. arvensiscan be harvested gradually or simultaneously.
Chemical and physical properties of zeoponic and their influence on growth of forestry plant seedling and horticultural crops
Authors: Suwardi  , Palupiningtyas Eva , Galuh Nur Fatiha Yuniar , Hidayat Miftakhul , Tjahyandari Suryaningtyas Dyah , Oktariani Putri
Published: January 2023

Zeolite is a hydrated microporous mineral of the aluminosilicate group, and the cation exchange capacity (CEC) of zeolite is high. Based on porous properties and high CEC, zeolite has the potential to be used as plant growth media (PGM). Zeoponic is a PGM made from zeolite mixed with compost and cocopeat added with macro and micro fertilizers suitable for plant growth. The goal of this research is to characterize the chemical and physical properties of zeoponic and several other PGM obtained from the market and to compare them for the growth of forestry plant seedlings and horticultural crops. This study was carried out from October 2021 to March 2022 in the greenhouse of the Department of Soil Science and Land Resources, Faculty of Agriculture, IPB University. The analysis of PGM was pH, electrical conductivity (EC), CEC, NO3-N, NH4-N, and bulk density. Parameters of plant growth were the height of plant, the leaves number, the leaf width and length, and the diameter of stem. The findings revealed that zeoponic has high CEC value than the other PGM, causing zeoponic to have low EC even though it contains high nutrients. With the chemical and physical properties mentioned above, the growth of mahogany plant seedlings in zeoponic is better than in other PGM. Likewise, the growth of horticultural crops grown in zeoponic is better than that of commercial media. This shows that zeoponic is a PGM suitable for growing forestry plant seedlings and horticultural crops.
The application of fertilizers on calliandra (Calliandra calothyrsus Meissn.) seedlings from several populations in West Java
Authors: Anita Nugraheni Y M M , Dwi Nur Cahyono Deddy , Syamsuwida Dida , Danu  , Aminah Aam , Yuniarti Naning , Dharmawati D , Nurmawati S , Agus Hendarto Kresno
Published: January 2023

Nutrient input on calliandra (Calliandra calothyrsusMeiss.) seedlings is a necessity to increase productivity. The study has been carried out to evaluate the growth of calliandra seedlings from several populations in West Java after being treated with bio and chemical fertilizers. The treatment used 2 (two) types of biofertilizers, i.e., Rhizomax and PGPR, and chemical fertilizer from Cabriotop, as well as aqua dest as a control. Calliandra seeds were collected from 3 (three) populations of West Jawa, i.e., Sukabumi, Garut, and Cianjur. The findings showed a positive response to seedling growth after fertilization, either with bio or chemical fertilizer. Biofertilizer was more responsive than chemical in the variables of leaf number, stem segment number, shoot dry weight, diameter, and root dry weight. Seedlings from Garut mainly showed the best growth compared to the Sukabumi and Cianjur seedlings.
Yellow disease on pepper in Bangka, Indonesia: The symptoms, diversity and population of nematodes
Authors: Lesta  , Munif A , Nurmansyah A
Published: January 2023

Meloidogyne incognita and Radopholus similis are the primary pathogens that reduce crop losses by up to 60% and cause yellow disease in pepper in Bangka. Consequently, the research aims to know the distribution diversity and population of nematodes, plant parasites, and non-parasites alike and the symptoms of the yellow disease on pepper. This study was carried out by selecting samples of pepper with symptoms of the yellow disease from a field on Bangka Island. Samples of soil and root were taken from three symptomatic plants in each site and repeated three times. Nematodes were extracted from samples and identified based on morphological characters. The results showed that the dominant symptoms of the yellow disease were yellowing of the leaves, stiff and curved towards the stem, small brownish spots and large blackish-brown spots on the leaf surface, yellowing, and severe symptoms until the leaves fall. The nematodes/ 100 ml of soil were Meloidogyne spp. with a total population of 275 individuals, Criconemoides sp. 158.33 individuals, Rhabditida group 1350 individuals, Aphelenchus avenae 25 individuals, and Mononchida group 25 individuals. The nematodes/ 5 g of roots were Meloidogyne spp. with a population of 775 individuals, Radopholus similis 133.33 individuals, and Criconemoides sp. 16.67 individuals.