bluuebunny/crossref_metadata_2025_split huggingface dataset:
Proposal of a VHEE Linac for FLASH radiotherapy
Authors: Giuliano L , Bosco F , Carillo M , Arcangelis D De , Ficcadenti L , Francescone D , Gregorio A De , Franciosini G , Migliorati M , Mostacci A , Palumbo L , Patera V , Sarti A , Alesini D , Behtouei M , Faillace L , Gallo A , Spataro B , Vannozzi A , Cirrone P , Cuttone G , Torrisi G , Bisogni M G , Pensavalle J H , Martino F Di , Favaudon V , Heinrich S , Patriarca A 
Published: January 2023

Abstract
Translation of electron FLASH radiotherapy in clinical practice requires the use of high energy accelerators to treat deep tumours and Very High Electron Energy (VHEE) could represent a valid technique to achieve this goal. In this scenario, a VHEE FLASH linac is under study at the University La Sapienza of Rome (Italy) in collaboration with the Italian Institute for Nuclear Research (INFN) and the Institut Curie (France). Here we present the preliminary results of a compact C-band system aiming to reach an high accelerating gradient and an high pulse current necessary to deliver high dose per pulse and ultra-high dose rate required for FLASH effect. We propose a system composed of a low energy high current injector linac followed by a modular section of high accelerating gradient structures. CST code is used to define the required LINAC’s RF parameters and beam dynamics simulations are performed using TSTEP and ASTRA.
Tuning of superconducting cavities using the FFT of transmitted power
Authors: Laface E , Maiano C G , Pierini P , Wang M 
Published: January 2023

Abstract
We implemented a method to tune the ESS superconducting cavities based on the spectral analysis of the high resolution data available from the Low Level RF system (LLRF) for the transmitted power, without the need of connecting a network analyzer or any other dedicated instrumentation along the RF chain. A frequency peak up to 4 MHz off from the resonating frequency can be detected and used to control the stepper motor of the tuner until the cavity is stretched to the proper length to reach the correct operation frequency. Experience of its use at the ESS Test Stand 2 (TS2) facility at Lund during cryomodule acceptance testing is presented.
Design studies on a high-power wide-band RF combiner for consolidation of the driver amplifier of the J-PARC RCS
Authors: Okita H , Tamura F , Yamamoto M , Nomura M , Shimada T , Yoshii M , Ohmori C , Sugiyama Y , Hasegawa K , Hara K , Paoluzzi M M 
Published: January 2023

Abstract
A power upgrade of the existing 8-kW solid-state driver amplifier is required for the acceleration of high intensity proton beams on the J-PARC 3-GeV Rapid Cycling Synchrotron. The development of a 25-kW amplifier with gallium nitride (GaN) HEMTs, based on 6.4-kW modules is ongoing. The combiner is a key component to achieve such a high output power over the wide bandwidth required for multi-harmonic RF operation. This paper presents the preliminary design of the combiner. The circuit simulation setup and results, including the realistic magnetic core characteristics and frequency response of the cable, are reported.
Design of the 590 MeV proton beamline for the proposed TATTOOS isotope production target at PSI
Authors: Hartmann M , Kiselev D , Reggiani D , Snuverink J , Zhang H , Seidel M 
Published: January 2023

Abstract
IMPACT (Isotope and Muon Production with Advanced Cyclotron and Target Technologies) is a proposed initiative envisaged for the high-intensity proton accelerator facility (HIPA) at the Paul Scherrer Institute (PSI). As part of IMPACT, a radioisotope target station, TATTOOS (Targeted Alpha Tumour Therapy and Other Oncological Solutions) will allow the production of terbium radionuclides for therapeutic and diagnostic purposes. The proposed TATTOOS beamline and target will be located near the UCN (Ultra Cold Neutron source) target area, branching off from the main UCN beamline. In particular, the beamline is intended to operate at a beam intensity of 100 μA, requiring a continuous splitting of the main beam via an electrostatic splitter. Realistic beam loss simulations to verify safe operation have been performed and optimised using Beam Delivery Simulation (BDSIM), a Geant4 based tool enabling the simulation of beam transportation through magnets and particle passage through the accelerator. In this study, beam profiles, beam transmission and power deposits are generated and studied.
Energy comparison of room temperature and superconducting synchrotrons for hadron therapy
Authors: Bisoffi G , Benedetto E , Karppinen M , Pullia M G , Khalvati M Reza , Rossi L , Sapinski M , Sorbi M , Valente U , van Weelderen R , Venchi G , Vretenar M 
Published: January 2023

Abstract
The yearly energy requirements of room temperature (RT) and superconducting (SC) magnet options of a new hadron therapy (HT) facility are compared. Special reference is made to the layouts considered for the proposed SEEIIST facility. Benchmarking with the RT CNAO HT centre in Pavia (Italy) was carried out. The energy comparison is centred on the different synchrotron solutions, assuming the same injector and lines in the designs. The beam current is 20 times higher than in present generation facilities: this allows efficient multi-energy extraction (MEE), which shortens the therapy treatment and is needed especially in the SC option, because of the slow magnet ramping time. Hence, power values of the facility in the traditional mode were converted into MEE ones, for a fair comparison between RT and SC magnets. Cryocoolers (c.c.) and a liquefier are also compared, for synchrotron refrigeration. This study shows that a RT facility in MEE mode requires the least average energy, followed by the SC synchrotron solution with a liquefier, while the most energy intensive solution is the SC one with c.c.
Study on construction of an additional beamline for a compact neutron source using a 30 MeV proton cyclotron
Authors: Kuriyama Y , Hino M , Iwashita Y , Nakamura R , Tanaka H 
Published: January 2023

Abstract
The Institute for Integrated Radiation and Nuclear Science, Kyoto University (KURNS) has been actively using neutrons extracted from the research reactor (KUR) for collaborative research. Since the operation of KUR is scheduled to be terminated in 2026 according to the current reactor operation plan, the development of a general-purpose neutron source using the 30 MeV proton cyclotron (HM-30) installed at KURNS for Boron Neutron Capture Therapy (BNCT) research has been discussed as an alternative neutron source. In this presentation, we report on the conceptual design of an additional beamline for a compact neutron source using this cyclotron.
Design of beam collection system with high transmission efficiency and tunablity
Authors: Yan Y , Yang T , Li D Y , Cheng H , Li Y Z , Wu M J , Fang Y L , Li F N , Guo Z , Yuan Z X , Zhu K , Lin C , Yan X Q 
Published: January 2023

Abstract
A beamline is required to focus proton beams produced by laser plasma accelerator to high charge density spots for practical applications. The Compact LAser Plasma Accelerator (CLAPA) coupled with an image-relaying beamline has been built at Peking University. While the collection section of this beamline is an electromagnetic quadrupoles (EMQs) triplet with certain aperture, more than 71 % of the protons are lost in the inlet end face or vacuum tube wall of triplet due to their divergence angles. Here we show the development of a high transmission efficiency and tunable collection system in the beamline by adding two permanent magnet quadrupoles (PMQs) with magnetic field strengths of about 200 and 120 T/m respectively in front of the triplet. As a result, by monitoring the relative position of the PMQs and the currents of the EMQs, the focusing energy is able to be adjusted ranging from 2 to 10 MeV, and the transmission efficiency is 1.4 to 3 times as high as only collected by EMQs triple.
Experimental analysis of the sweepback angle effect on the thrust generation of a robotic penguin wing
Authors: Shen Yayi , Tanaka Hiroto 
Published: January 2023

Abstract
Penguins have evolved excellent swimming skills as diving birds, benefiting from their agile wings. This paper experimentally analyzes the effects of the wing sweepback angle on thrust generation using a robotic penguin wing. A developed wing mechanism that can realize penguin-like flapping and feathering motion was used for actuating five alternative wing models, with different sweepback angles ranging from 0° to 50°. Force measurements under a steady water flow were conducted for both fixed and flapping states for all wing models. The results showed that small sweepback angles of 30° or less in the fixed state caused a steep lift curve and a moderate sweepback angle of 30° produced the largest lift-to-drag ratio. In the flapping state, the smaller sweepback wings generated a larger net thrust for the same wing motion, whereas the larger-sweepback wings produced more thrust under the same Strouhal number. The findings also revealed that larger sweepback wings more easily achieve the maximum net thrust in terms of less angle-of-attack control. In contrast, the hydrodynamic efficiency was not greatly affected by the sweepback. Regardless of the sweepback, the trend of the efficiency increasing with increasing flow speed indicates that the penguin wings can be more suitable for high-speed locomotion for higher hydrodynamic efficiency.
Monitoring Land Subsidence and its Effect on Surabaya Coastal Inundation by Utilizing GPS Campaigns Data
Authors: Riastama C N , Anjasmara I M , Maulida Putra 
Published: January 2023

Abstract
Land subsidence is a process of land movement based on a certain datum (geodetic reference frame) in which there are various variables causing it. This phenomenon occurs in many big cities in Indonesia, which is the city of Surabaya. The Surabaya city has a type of soil in the form of alluvial soil which is prone to movement. The accumulation of land subsidence that occurs will certainly cause its own losses. As a result, it can damage urban infrastructure so that in the future it can cause disruption to the environment, economic activities, and social life in the region. In addition, the Surabaya area is also a coastal area. Coastal areas have characteristics where this area will be strongly influenced by natural events. One of the natural events that affect the oceans and coastal areas is global temperature changes. The phenomenon of global temperature changes can affect sea level rise. If sea level rise occurs accompanied by an increase in the rate of land subsidence, this can result in flooding or inundation in coastal areas. Considering that the city of Surabaya is a metropolitan city that has a high population density and a continuous level of development, mitigation efforts are important in following up on land subsidence in this area. One of the efforts that can be applied is by conducting GPS observations. The outcomes of the GPS observations were then processed using scientific software in the form of GAMIT/GLOBK. According to the study’s findings indicated that Surabaya is experiencing land subsidence in the northern and eastern coastal areas with a range of 0.2 – 83.3 mm/year. The point that experienced a significant decline was in the border area of Tandes and Asemrowo, namely station BM35. Furthermore, land subsidence conditions influence the extent of tidal inundation, where in 2032 tidal inundation will inundate 105.411 km2.
An Estimation of Precipitable Water Vapour Around Surabaya City Using GIPSY-X
Authors: Adhi Dermawan A.A. , Handoko Eko Yuli , Maulida Putra 
Published: January 2023

Abstract
Precipitable water vapor is a crucial climatic parameter that indicates the available humidity in the atmosphere. Precipitable water vapor is produced by evaporation/evapotranspiration from the surface to the atmosphere and thus plays an important role in the water cycle. As an essential indicator of climate change, water vapor contributes significantly to the thermodynamics of the atmosphere. Zenith Total Delay can be calculated using the Precise Point Positioning strategy and all parameters. Using the parameter mapping function, Slant Tropospheric Delay can be converted to Zenith Total Delay, which is affected by temperature, pressure, and humidity. We processed the GNSS data from five stations surrounding Surabaya City using GipyX. Advanced processing generates five minutes of ZTD estimation on each station for five years of observation. A high correlation of ZTD estimated using GipsyX (corr = 0.88) with ZTD at meteorological rinex data of DARW station shows our estimation’s promising and dependable result. The ZTD time series shows consistent patterns on each station, showing the significant contribution of regional signals such as monsoon and ENSO.
The Use of Sentinel-1 in Response to Sequences of Natural Disasters in Indonesia: The South Kalimantan Floods and The Mamuju-Majene Earthquake
Authors: Hayati Noorlaila , Ghifary Royyan M. , Arief Rahmat , Darminto Mohammad Rohmaneo 
Published: January 2023

Abstract
A series of floods occurred in the early year of 2021 are the first major South Kalimantan flood in the past fifty years. The major regions which were affected by them are Banjarmasin, Central Hulu Sungai Regency, and Tanah Laut. There are 211,670 people severely affected by flooding and some of them need to be evacuated to higher zones. Not only floods as a concern of Indonesia National Disaster Management Authority (BNPB) but also earthquake that struck the Mamuju and Majene Regency, in the province of West Sulawesi on 14 and 15 January 2021. Damage was reported in 4 regencies which more than 6,000 buildings were destroyed, more than 3,300 were injured, and 105 people were confirmed dead due to this earthquake. Quick monitoring of two events must be conducted in order to support spatial information for BNPB mitigating the disasters. A geodetic ground measurement could be the best result in terms of accuracy and a large-scale map. However, a lack of pre-event measurement and a difficulty to access the primary roads and bridges in the affected regions makes ground survey complicated to be conducted. An alternative solution is using a space-borne remote sensing which its sensor regularly passes the affected regions. We used Synthetic Aperture Radar (SAR) data from Sentinel-1 to regain spatial information before and after disasters in the provinces of South Kalimantan and West Sulawesi such as inundation and deformation areas, respectively. Using an interval of 12 days and the SAR backscatter analysis, we found inundated areas mostly located near to the Barito River and in sub-districts along its tributaries for a case study of South Kalimantan floods. Meanwhile, we detected deformation about -5 cm in the southern part of West Sulawesi using the Differential Interferometric SAR (DInSAR) technique. Due to high decorrelation with the range of coherence values between 0 and 0.2 in the epicenter of earthquake area, the generated interferograms can not confirm the surface displacement caused by the sequence series of foreshocks, mainshocks, and aftershocks in this area.
Preliminary Prioritization on Steam Flood Injection in Oil Field Using Random Forest Regression Method
Authors: Rafi M , Anggoro S , Rochman Juan Pandu Gya Nur 
Published: January 2023

Abstract
Steam flood injection is a method based on thermal recovery that injects steam, or especially water, at particular temperatures through the special injection wells. In this research, the oil field injected in steam flood is a heavy oil maturation with high viscosity, while the preliminary prioritization in steam flood injection in an oil field must be done at certain stages in a particular area in this oil field. This area consists of 8 sub-areas, 1,2,3 north section of the sub-area and 1,2,3,4,5,6,7,8 south section of the sub-area, each of which has a different number of wells and subsurface conditions. The provision to prioritize the injection in certain areas consists of monthly well production data, well location data, and reservoir data. On reservoir data is used a machine learning method that is random forest regression, which aims to generate variable importance, which will be made by grading reservoir properties variables on which are the most important or relevant for use as a parameter to determine the preliminary prioritization. The use of this Random Forest Regression method was combined to get an accuracy score for high-level modelling and correlate the process and results with the original state of on-field development and reservoir properties. The flow of this method is data cleansing, fitting models to data, assessing the quality of fit, generating decision trees, and identifying key variables. The tools used for this method include a programming language, which will do processing and build the variable importance model in the Random Forest Regression method. This can be done in a systematic and structured way. The result of this method shows the variable importance of reservoir properties such as porosity, saturation, and permeability in the form of OOB value calculation. While the final result of all corresponding prioritizations indicates that the 4,5,6 south section sub-areas should be prioritized for steam flood injection first.
Landslide Susceptibility Mapping Using Random Forest Algorithm and Its Correlation With Land Use In Batu City, Jawa Timur
Authors: Riestu IM , Hidayat H 
Published: January 2023

Abstract
Landslides is one of the most detrimental natural disasters because their occurrences are often destructive to natural and artificial structures on earth and reduce the quality of the surrounding environment. Prediction of the level of vulnerability to landslides in an area can be used to reduce losses caused such as material, loss of life and other environmental damage. BPBD Batu City stated that landslides are the most frequent disasters in Batu City. This research is expected to determine the level of vulnerability to landslides in Batu City, East Java and discover the correlation with the land use. Random Forest (RF) is an algorithm that can be used to predict landslide disasters. The disaster occurance data is then linked to the parameters that cause landslides such as slope, rainfall, soil type, lithology, land use, and soil movement susceptibility zones. The dataset is then divided into 70% training data and 30% testing data. The performance test results show that the RF algorithm can be applied to predict landslide-prone areas in Batu City. This can be seen in the results of the accuracy test which obtained a value of 0.8981 and an AUC value of 0.9327. The result shows that the high prone areas are in settlements, industry & public facilities while the low prone areas are in forest.
The Effect of Human Disturbance on the Spatial Distribution of Anoa (Bubalus Sp.) Using MaxEnt Modeling
Authors: Ardiani Diah , Jaelani Lalu Muhamad , Aldiansyah Septianto , Tambunan Mangapul Parlindungan , Indrawan Mochamad , Wibowo Andri A. 
Published: January 2023

Abstract
Anoa (Bubalus sp.) is one of the endemic species of Sulawesi Island, which is protected because it is threatened with extinction. This study aims to determine the possible distribution of anoa habitat based on environmental parameters by considering the influence of human disturbance. Human disturbance to Anoa is in the form of settlement and transportation infrastructure. The purpose of this paper is to observe whether human disturbance has an effect or not on Anoa spatial distribution. Using 98 encounter species data points, the model discovered that settlement and transportation infrastructure contributed only 4.3% and 1.4%, respectively. Meanwhile, elevation, temperature, and water have a dominant contribution that exceeds 90%. This data indicated that the anoa habitat is less sensitive to human disturbance.
Landscape Planning for Tsunami Disasters Mitigation on Denpasar Coastal Zone
Authors: Manan A , Sanjaya H , As-syakur A R 
Published: January 2023

Abstract
The coastal area is a land-sea transition area and has unique characteristics. This area can also be vulnerable, especially if it is directly related to an area with an epicenter that can cause a tsunami. The coastal areas of South Denpasar, Bali are vulnerable to this disaster. The purpose of this study is to characterize landscape plans and landscape-based mitigation plans for the South Denpasar region. The survey method used in this survey is the METLAND method (Metropolitan landscape planning model survey). The research phase includes four phases: preparation phase, analysis phase, integration phase, and landscape planning phase. The planning characteristics of the tsunami mitigation landscape were analyzed using the tsunami vulnerability matrix table. The materials used in this study were Landsat 9 satellite imagery, National Demnas, Batnas, and Indonesia Topographic Map. Denpasar coastal zone based on the results of land use land cover, distance from the river, distance from the coast, elevation, and slope, has a high risk of being affected by the tsunami. The concept of mangrove vegetation needs to be applied, because mangroves have an important role in resisting tsunami waves. In addition, spatial planning and coastal buildings need to be considered in tsunami mitigation.
Distributed flood simulation based on satellite rainfall data at the Ciliwung River Basin, Jawa, Indonesia
Authors: Sulistyowati R , Meliani F , Sapan E G A , Winarno  , Lestari S , Hapsari R I , Cahyaningtiyas I F , Avianti E , Eugenie A , Grace T , Amaliyah R , Djoharin M , Sutejo B , Syamsudin F 
Published: January 2023

Abstract
Recurrent flooding in Jakarta and surrounding areas due to extreme rainfall is simulated by using distributed hydrological model. In the previous studies, the Rainfall-Runoff Inundation (RRI) model has been used for the flood simulation with 1-km spatial resolution, but it has not been comprehensively investigated. In this paper, extreme rainfall data derived from satellite rainfall data of GSMaP, topography, and land derived from the satellite remote sensing data are used as an input for the RRI model. We analyse the flood simulation at Ciliwung River Basin during 6 (Six) periods of extreme rainfall during January – March 2022 and divide between Flood (F) and Non-Flood (NF) periods. We found that the inundation occurred when the rainfall average reaches more than 7.3 mm/hr and concentrated in the Jakarta downtown area, which had induced the inundation around the Ciliwung river basin.
Stonex F6 and iPad Pro M1 2021 for Cave Graffiti Inspection in Barong Cave, West Java, Indonesia
Authors: Jessy Kartini G. A. , Gumilar Irwan , Abidin H. Z. , Yondri Lutfi , Nabil Nugany M. R. 
Published: January 2023

Abstract
Currently, handheld scanning technology is expanding. In 2021, Apple released updated iPad and iPhone models that included LiDAR. In addition to the iPad Pro 2021, the Stonex F6 is also used to scan heritage objects. In this study, an experiment will be conducted to compare the performance of the two tools when scanning graffiti-covered cave walls. This experiment is hoped to be the first step in discovering cave art using iPad or iPhone Pro that included LiDAR. Echo Mantis is the software that is utilized for the processing of the results of the Stonex scan. Data processing on the iPad Pro M1 uses the same application as data acquisition, namely the 3D Scanner App. The analysis of both datasets was performed using the Cloud Compare software and a density analysis based on the number of neighbors. The density point of Stonex F6 is 1707 points and iPad Pro M1 2021 is 27 points at a radius of 2 cm. According to the results of the study, Stonex F6 has a higher point density than the iPad Pro M1 2021, but the lack of light presents the greatest challenge to data acquisition using Stonex F6. In contrast, due to the good camera resolution of the iPad Pro M1 2021, its point cloud coloring is better compared to that of the Stonex F6.