bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study of a Large CaF2(Eu) Scintillating Bolometer for Neutrinoless Double Beta Decay
Authors: Li X , Kwon D H , Tetsuno K , Kim I , Kim H L , Lee H J , Yoshida S , Kim Y H , Lee M K , Umehara S , Kishimoto T 
Published: March 2020

Abstract
Scintillating bolometer is a powerful tool to search neutrinoless double beta decay. We established a large scintillating bolometer using a 312 g CaF2(Eu) crystal with a readout technology of metallic magnetic calorimeters. A set of successful measurements were carried out for simultaneous detection for heat and light signals at 10-40 mK in an above-ground laboratory. We found large light signals with clear difference in scintillation yields between electron- and alpha-induced events. The comparison of relative amplitudes of heat and light signals obtained about 10 σ discrimination power. We also found the heat signals experiencing strong position dependence from the event location. This position dependence can be interpreted by the spin-lattice interaction of paramagnetic Eu ions in the CaF2 crystal.
Light sterile neutrinos: the current picture from neutrino oscillations
Authors: Gariazzo Stefano 
Published: March 2020

Abstract
Light sterile neutrinos with a mass around 1 eV have been studied for many years as a possible explanation of the so called short-baseline neutrino oscillation anomalies. Recently, several neutrino oscillation experiments reported preferences for non-zero values of the mixing angles and squared mass differences for active-sterile mixing, which however are not always in agreement. I will review our current knowledge on the light sterile neutrino in the 3+1 model, starting with a separate discussion on the status of the most relevant searches and then analyzing the problems that arise when combining different probes in a global fit.
The New CERN Low-energy Facilities for Neutrino Detector Tests
Authors: Bernhard J. , Charitonidis N. , Banerjee D. , Brugger M. , Chatzidaki P. , D’ Alessandro G.L. , van Dijk M. , Gatignon L. , Gerbershagen A. , Montbarbon E. , Rae B. , Rosenthal M. , Veit B. M. 
Published: March 2020

Abstract
The beamlines at CERN’s North and East Areas offer secondary beams in a wide range of momenta between 0.5 GeV/c and 400 GeV/c for fixed-target experiments as well as for test beam campaigns with a flexible configuration and variable beam composition and intensities. Recently, two new facilities for neutrino detectors tests have been established in an extension of the CERN North Area in context of the CERN Neutrino Platform project. These new tertiary beams extend the current capabilities of the H2 and H4 beamlines towards lower momenta in the range of 0.3 GeV/c to 12 GeV/c, respectively 7 GeV/c, and currently serve the two ProtoDUNE prototype detectors. In addition, a complete overhaul of the CERN East Area is underway, which will provide secondary beams with momenta of up to 15 GeV/c (T9 beam) and 12 GeV/c (T10 beam). New beam optics and an optimised design will allow for electron, hadron and muon beams with high purity. We discuss the layout and performance of both North and East Area beamlines as well as the available infrastructure for the neutrino detector community.
Scintillation balloon for liquid scintillator base Neutrinoless double beta decay search experiments
Authors: Obara S , Gando Y , Ishidoshihro K 
Published: March 2020

Abstract
A liquid scintillator base experiment KamLAND-Zen has set a lower limit on neutrinoless double beta decay half-life, and upgrade project KamLAND-Zen 800 has started in 2019. Unfortunately this project expects some backgrounds, and one of the main backgrounds is β/γ-ray from 214Bi in container of xenon loaded liquid scintillator (mini-balloon). In order to reject the background, we suggest using scintillation film for the future mini-balloon. If we can tag α-ray from 214Po by scintillation detection, we can eliminate 214Bi events by delayed coincidence analysis.
Recently, it was reported that polyethylene naphthalate (PEN) can be used as a scintillator with blue photon emission. PEN has chemical compatibility for strong solvent, thus it has a possibility to use in liquid scintillator. In this presentation, we will mention the results for feasibility studies about transparency and emission spectra, light yield, radioactivity, strength of film etc.. We also show the test-sized scintillation balloon with an 800-mm diameter and discussions about how to use the scintillation balloon in KamLAND.
Status of ultra-pure scintillating crystal growth for rare process experiments by CUP
Authors: Ra Se Jin , Kim Dae Yeon , Lee Cheol Ho , Son Ju Kyung , Shin Keon Ah , Gileva Olga , Choe Jun Seok , Kang Woon Gu , Lee Eun Kyung , So Jung Ho , Lee Moo Hyun , Park Hyang Kyu , Kim Hong Joo , Kim Yeong Duk 
Published: March 2020

Abstract
Center for Underground Physics (CUP) at Institute for Basic Science (IBS) has been operating the COSINE-100 for WIMP search and the AMoRE (Advanced Mo based Rare process Experiment) for neutrinoless double beta decay search. Both experiments are using ultra-pure scintillating crystals at the underground facility to avoid the cosmic muon background.
In order to grow the ultra-pure crystals, the raw materials are purified and their radioactive levels are measured using ICP-MS and HPGe. A clean-room facility has been constructed to avoid external contaminations during the crystal treatment procedure after the growth.
We present the current status of the crystal growth facility and discuss further about next levels for the ultra-pure crystal production in near future.
Drift field generation with Cockcroft-Walton voltage multiplier in xenon gas for AXEL 0vββ search detector
Authors: Yoshida M , Ban S , Hirose M , Ichikawa A K , Iwashita Y , Kikawa T , Minamino A , Miuchi K , Nakadaira T , Nakajima Y , Nakamura K D , Nakamura K Z , Nakaya T , Obara S , Sakashita K , Sekiya H , Sugashima B , Ueshima K 
Published: March 2020

Abstract
For noble gas Time Projection Chambers (TPCs) in the field of rare event searches, operation of high voltage to generate an electric field is a key point. We designed a new structure of electrodes to shape a strong and uniform drift field without electric discharge, in which electrodes of two different radius are used. We also developed Cockcroft-Walton voltage multiplier as a high voltage generator inside a pressure vessel. We achieved −30.0 kV output and examined such kind of voltage generator is feasible as a high voltage supplier in a TPC.
Neutrino masses beyond the minimal seesaw
Authors: Cepedello Ricardo , Fonseca Renato , Hirsch Martin 
Published: March 2020

Abstract
The simplest possibility to generate small Majorana neutrino masses is the seesaw mechanism. However, the smallness of the observed neutrino masses can also be understood, if neutrino masses are generated by higher-dimensional operators and/or at higher loop level. In this talk recent work on systematic classifications of higher-dimensional and radiative neutrino mass models is summarized. Two particular classes of special genuine loop diagrams, i.e. diagrams which can lead to genuine neutrino mass models only under some specific, well-defined conditions, are also discussed.
Scalar triplet leptogenesis with S
3 symmetry
Authors: Mishra Subhasmita , Giri Anjan 
Published: March 2020

Abstract
Extension of standard model with simplest discrete symmetry S
3 is conisidered to explain the neutrino masses and mixing consistent with the current observations. The particle content is extended by addition of right handed neutrinos and scalar triplets and explain the observed data in the neutrino sector. We mostly focus here on baryogenesis from the decay of a heavy triplets in the presence of right-handed neutrinos. The scenario also provides us the viability of TeV scale particles in the framework in the context of future collider searches of lepton flavor violation.
R&D on the gas injection system of Beam Induced Fluorescence Monitor toward MW beam power at the J-PARC Neutrino Beam-line
Authors: Nakamura A. , Koshio Y. , Friend M. , Sakashita K. 
Published: March 2020

Abstract
A Beam Induced Fluorescence (BIF) monitor is being developed as an essential part of the monitor update toward MW beam power operation at the J-PARC neutrino beam line, where a 30 GeV proton beam is extracted, bent and struck onto a 90-cm-long graphite target to produce an intense and nearly pure muon (anti-)neutrino beam for the Tokai-to-Kamioka(T2K) experiment. A BIF monitor can measure the proton beam profile non-destructively and continuously spill-by-spill with fluorescence light produced by proton-N
2 interactions. In order to generate enough light to measure the profile precisely, it is necessary to temporarily increase the vacuum pressure near the BIF interaction point up to ~ 10−2 Pa during each beam spill while keeping the average pressure low (10−4 to 10−6 Pa) at other locations to protect vacuum equipment. Therefore, R&D of a pulsed gas injection system satisfying these requirements is in progress. We will report the recent R&D status of the gas injection system and prospects toward operation of a prototype monitor which we plan to install this fall 2019.
Small scale ring laser gyroscopes as environmental monitors
Authors: Bosi Filippo , Di Virgilio Angela D. V. , Giacomelli Umberto , Simonelli Andrea , Terreni Giuseppe , Basti Andrea , Beverini Nicolò , Carelli Giorgio , Ciampini Donatella , Fuso Francesco , Maccioni Enrico , Marsili Paolo , Stefani Fabio 
Published: March 2020

Abstract
Inertial sensors are of interest for many different applications, and at present ring laser gyros with area larger than one square meter are the most sensitive ones; a few ring lasers with area between 15 and 72 square meters are operative with sensitivity of the order of tens of prad/s in 1 second measurement and high duty cycle. Smaller scale rings are severely limited by the back-scattering induced coupling between the counter-propagating beams, that in presence of just the angular rotation velocity vector of the Earth, eventually lock together the two frequencies making the device blind. The problem is usually overcome by increasing the frequency distance between the two modes, i.e. increasing the size of the ring. Even when the RLG is large enough and the two modes are not locked, back-scattering affects the signal. However, this is not a fundamental limit, and we have recently shown that it can be analytically solved. In this paper the sensitivity of a ring laser with a square side of 1 m will be discussed.
Gravitational Waves Detectors
Authors: Ricci Fulvio 
Published: March 2020

Abstract
The search for direct detection of Gravitational Wave made a huge step forward in the years between 2015-2017. After the first detection signals from the coalescence of binary black hole systems, we had both the great success of the LISA pathfinder mission and the detection of the first event due to a neutron star - neutron star merger tagged as the birth of the multi messenger astronomy. A new era is now opened where the GW events are detected routinely by the triangular network of LIGO and Virgo that in the nearest future will be enlarged by including KAGRA, the fourth detector in Japan. Here we review the evolution of the existing detectors focusing our attention essentially on the middle and long-term evolution of those on the Earth.
Alpha-ray imaging chamber based on a micro-TPC in a low radioactivity structure
Authors: Ito Hiroshi , Miuchi Kentaro , Kobayashi Kazuyoshi , Takeuchi Yasuo , Nakamura Kiseki D. , Ikeda Tomonori , Ishiura Hirohisa 
Published: March 2020

Abstract
An α-ray imaging chamber has been developed based on a gaseous micro-time-projection chamber with a low-α emission μ-PIC in a low radioactivity structure. The detector offers the advantage of position sensitivity, which allows to image the α-ray contamination for the sample. It measures the α-ray rate in the sample region and a background region at the same time, thus that the net α rate from the sample can be evaluated efficiently by subtracting these rates from each other. In this work, the measurement results for several samples using the detector is provided.
Development of a cryogenic alpha-screening facility at the shallow underground laboratory at TUM
Authors: Kinast Angelina , Mondragon Elizabeth , Erb Andreas , Langenkämper Alexander , Kaznacheeva Margarita , Ortmann Tobias , Pattavina Luca , Potzel Walter , Schönert Stefan , Strauss Raimund 
Published: March 2020

Abstract
A precise measurement of the radio-purity levels of the CaWO4 crystals used for both the CRESST and the NUCLEUS experiment, is fundamental for a better background understanding. The sensitivity of HPGe detectors is not sufficient to the excellent radio-purity levels of the CaWO4 crystals produced in-house at the Technische Universität München (TUM). We report on a cryogenic α-screening facility which will provide a method to determine the radio-purity of this crystals by measuring the alpha-decays with a high precision, taking advantage of the unique experimental environment of the shallow underground laboratory (UGL) of the TUM.
Radioassay and Purification for Experiments at Y2L and Yemilab in Korea
Authors: Lee Moo Hyun 
Published: March 2020

Abstract
Two major rare-process search experiments, COSINE-100 for WIMP dark matter and AMoRE for neutrinoless double beta decay, have been running at the Yangyang underground laboratory (Y2L) in Korea for about four years. In order to measure radio-activities of materials in both experiments, a number of ultra-low radioactivity measurement detectors have been developed and are now operational. For radioassays of raw materials and detector components, an ICP-MS, an argon gas ionization counter, and a number of HPGe detectors are being used. Three silicon PIN diode-based radon chamber detectors have been either upgraded or constructed for accurate measurements of atmospheric radon in a radon reduction system. A fourteen element HPGe detectors array was installed in 2016 for more sensitive measurements and larger sample capacities than those could be tested in two single crystal HPGe detectors. Since the Y2L space is too small to accommodate the next phases of both experiments, a new underground laboratory, called Y emilab, is being constructed in Jeongseon, Korea with a factor of ten more space (~2,800 m2) and a ~1,100 m overburden compared to ~200 m2 and ~700 m at Y2L. The future experiments require detector materials with substantially lower background levels than those in the current ones. Various types of scintillating crystals such as CaMoO4, Li2MoO4, and NaI(Tl) are being grown with purification methods specifically developed for the raw materials. A summary on radioassay and purification results for experiments at Y2L and Yemilab in Korea will be presented.
Link between modern building and Kediri’s tradition: An idea to develop teaching-learning equipment
Authors: Fiantika F R , Sa’dijah C , Qohar A , Darsono  
Published: March 2020

Abstract

“Simpang Lima Gumul” is monument building which the architecture value, symbolic and esthetical value at Kediri. The “Simpang Lima Gumul” monument is crossing representation of Kediri’s tradition culture and modern building concept. In preliminary study researcher found that student have difficulties for understanding geometry subjects. Contextual teaching-learning based on culture is needed to conserve local culture through transforming it in the context of learning. The aim of this paper is describing indicator of “Simpang Lima Gumul” monument based on semiotics study they are denotation, connotation and meta-languages level. The result is used to develop teaching-learning equipment.
Analyzing mathematical creative thinking ability on sample space materials grade VIII SMP Kanisius Pakem
Authors: Nobilio Pasia Janu Margaretha , Wicaksono Anung 
Published: March 2020

Abstract
This study aimed to describe the learning process using problem-based learning for a sample space material and creative thinking ability while solving the problem. The subject of this study is 16 grade VIII students of SMP Kanisius Pakem. The instrument used in this study were observation sheet, Hypotethical Learning Trajectory (HLT) and the student’s worksheet. The type of this research is design research. The result then can be classified, represented, and the conclusion can be drawn by comparing the result from the Student’s Worksheet and indicators of mathematical creative thinking ability. The result of this study were using problem based learning is the mathematical creative thinking does not require student’s answer to be correct, but more importantly that they have displayed some indicators of mathematical creative thinking while solving the problem.
Design textbooks based linguistic intelligence towards representation ability on statistics
Authors: Setiyani  , Gloriani Y 
Published: March 2020

AbstractAn introduction to statistics is a compulsory subject taken by Indonesian Language and Literature Education (Diksatrasia) students. In this course, whether or not Diksatrasia students who have SMA / SMAK / MA cannot understand mathematical concepts. This is a challenge for lecturers who teach these subjects, because most students do not like mathematics. The results of the development of textbooks are based on linguistic intelligence on the ability of statistical representation. This study uses the ADDIE research and development method (Analysis, Design, Development, Implementation, Evaluation) that has been modified and is limited to the development stage. The results of this study indicate that textbooks are very well used with total expert validation of 94% with very valid interpretations. It can be concluded that the introductory statistical textbook that has been developed can be used in subsequent implementations
Development of evaluation of mathematical communication capabilities based on information technology for junior high school students
Authors: Wahyuni I , Aminah N , Sukestiyarno Y L , Wijayanto A 
Published: March 2020

Abstract
Evaluation is a measure of learning outcomes, so evaluation is a description of the success of learning that has been done by educators. Because of this, the aim of this study was to produce an evaluation tool for IT-based learning using the Wondershare Quiz Creator software with the title of developing an IT-based mathematical communication skills evaluation tool for junior high school students who obtained feasibility and validity as an evaluation tool for mathematics learning, especially in triangular material. rectangular. This research is R & D (Research and Development) research. This evaluation tool was developed with a 4-D learning device development model that was modified to 3-D (Define, Design, Develop). The research instruments used were interview guidelines and questionnaires. Data collection techniques of research conducted were interviews, validation sheets, and response questionnaire sheets. Based on the results of the validation conducted by 3 experts, it was found that the learning evaluation tool that had been made was very valid with an average percentage of 88.89%. While the results of the user response questionnaire that the percentage of the results of the overall student response questionnaire amounted to 88.33% and the percentage of the results of the overall teacher response questionnaire amounted to 91.67%, thus both results of the questionnaire responses have very good criteria. So, the IT-based mathematical communication skills evaluation tool for junior high school students is a practical evaluation tool.
Development of open online ethnomathematics course
Authors: Andy Rudhito Marcellinus , Dwi Kristanto Yosep , Madha Melissa Margaretha 
Published: March 2020

Abstract
Ethnomathematics examines mathematical aspects in a particular culture of a community or region. Ethnomathematics studies are still very potential to be carried out for Indonesian culture that is very rich and diverse. The results of this ethnomathematics study, in addition to increasing knowledge in mathematics and mathematics education, can also be utilized in mathematics learning, especially in the provision of contextual problems. To accelerate and enrich the ethnomathematics study in this broad Indonesian culture, it is necessary to involve many people in all regions of Indonesia. In this study, a virtual class was designed and developed by utilizing the Moodle Learning Management System to facilitate and empower students, teachers, lecturers and observers of mathematics education in conducting ethnomathematics studies. This study aims to design and develop virtual classrooms using Moodle that can facilitate people who will conduct ethnomathematics studies in Indonesia, and analyze the feasibility of the aforementioned virtual classes developed. The present study employs design research, which includes the context analysis phase, literature review, design and development of virtual classes, focus group discussions, limited trials, broad implementation, and implementation analysis. The results discussed in this article include the stage of context analysis, literature review, design and development of virtual classes and focus group discussions.
Analysis of spatial ability of class VIII students Institute Indonesia Yogyakarta Problem Based Learning on topic of cuboids and cubes
Authors: Nanga M Y , Hurit R U 
Published: March 2020

Abstract
The goals of this research were (1) to describe implementation of learning about cuboids and cube nets by using problem based learning (PBL), (2) to describe the spatial ability (spatial representation) of students by using problem based learning about cuboids and cubes nets. The type of research is design research. The research subjects were 28 grade VIII SMP Institute Indonesia Yogyakarta. Data was collected using field notes, documentation and results/answer of LKS 1, LKS 2. The data analysis technique used is qualitative descriptive. The research was conducted in March 2019. The research about the learning process by using problem based learning. The results of the research show that the learning design made in this research is good and the spatial ability of grade VIII students SMP Institut Indonesia Yogyakarta in making cuboids and cubes nets have fulfilled the first indicator (1). This is indicated by the majority of students able to describe cuboids and cubes nets. In addition, some students have not fulfilled the second indicator about identifying cuboids and cubes nets.