A new, efficient method to produce ultracold negative muon ions is proposed. The muonium atom is made up of an antimuon and an electron and is given the chemical symbol Mu. A second electron with binding energy or electron affinity of 0.75 eV makes the Mu- ion, which is in many ways almost identical to the H- ion that is used for charge-exchange injection into most proton particle accelerators. Muonium negative ions were observed in 1987 by interactions of muons with a foil. Using the foil charge-exchange approach, the efficiency of transformation of muons to negative muonium ions has been very low ~10-4. However, by using a hot tungsten or palladium single crystal foil or aerogel treated by cesium deposition, the production efficiency can be improved up to 50%. The process described here has surface muons focused onto a tungsten or palladium single crystal foil or aerogel (that can be heated up to 2000 Celsius) and partially covered by a cesium layer to provide a minimal work function. The negative muon ions can be extracted by a DC electric field and further accelerated by a linac and stripped in a thin foil. Charge exchange with a. dense flow of positive or negative ions is proposed for conversion of slow muonium atoms into positive and negative muonium ions
{"title":"Ultracold muonium negative ion production","authors":"V. Dudnikov, A. Dudnikov","doi":"10.1063/1.5083774","DOIUrl":"https://doi.org/10.1063/1.5083774","url":null,"abstract":"A new, efficient method to produce ultracold negative muon ions is proposed. The muonium atom is made up of an antimuon and an electron and is given the chemical symbol Mu. A second electron with binding energy or electron affinity of 0.75 eV makes the Mu- ion, which is in many ways almost identical to the H- ion that is used for charge-exchange injection into most proton particle accelerators. Muonium negative ions were observed in 1987 by interactions of muons with a foil. Using the foil charge-exchange approach, the efficiency of transformation of muons to negative muonium ions has been very low ~10-4. However, by using a hot tungsten or palladium single crystal foil or aerogel treated by cesium deposition, the production efficiency can be improved up to 50%. The process described here has surface muons focused onto a tungsten or palladium single crystal foil or aerogel (that can be heated up to 2000 Celsius) and partially covered by a cesium layer to provide a minimal work function. The negative muon ions can be extracted by a DC electric field and further accelerated by a linac and stripped in a thin foil. Charge exchange with a. dense flow of positive or negative ions is proposed for conversion of slow muonium atoms into positive and negative muonium ions","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"51 1","pages":"060001"},"PeriodicalIF":0.0,"publicationDate":"2018-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88643443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Stoupin, T. Krawczyk, J. Ruff, K. Finkelstein, H. Lee, R. Huang
We report on performance of chemical vapor deposited (CVD) single crystal diamond plates as side bounce monochromators for high photon energies ($gtrsim$~20 keV) in the Laue geometry. Several crystals were tested in-operando high-heat-load conditions at A1 undulator station of Cornell High Energy Synchrotron Source. Up to 10$times$ enhancement in the reflected x-ray flux was observed compared to that delivered by IIa diamond plates grown by high-pressure high-temperature method. Wavefront distortions were measured using analyzer-based x-ray diffraction imaging. Focusing of a portion of the reflected beam was demonstrated using Pt-coated mono capillary optics at a photon energy of 46 keV.
{"title":"Performance of CVD diamond single crystals as side-bounce monochromators in the Laue geometry at high photon energies","authors":"S. Stoupin, T. Krawczyk, J. Ruff, K. Finkelstein, H. Lee, R. Huang","doi":"10.1063/1.5084650","DOIUrl":"https://doi.org/10.1063/1.5084650","url":null,"abstract":"We report on performance of chemical vapor deposited (CVD) single crystal diamond plates as side bounce monochromators for high photon energies ($gtrsim$~20 keV) in the Laue geometry. Several crystals were tested in-operando high-heat-load conditions at A1 undulator station of Cornell High Energy Synchrotron Source. Up to 10$times$ enhancement in the reflected x-ray flux was observed compared to that delivered by IIa diamond plates grown by high-pressure high-temperature method. Wavefront distortions were measured using analyzer-based x-ray diffraction imaging. Focusing of a portion of the reflected beam was demonstrated using Pt-coated mono capillary optics at a photon energy of 46 keV.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"1 1","pages":"060019"},"PeriodicalIF":0.0,"publicationDate":"2018-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82080420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-05-30DOI: 10.1007/978-3-319-73171-1_27
R. Ganai, S. Mehta, M. Shiroya, M. Mondal, Z. Ahammed, S. Chattopadhyay
{"title":"A Proof-of-principle for Time-Of-Flight Positron Emission Tomography Imaging","authors":"R. Ganai, S. Mehta, M. Shiroya, M. Mondal, Z. Ahammed, S. Chattopadhyay","doi":"10.1007/978-3-319-73171-1_27","DOIUrl":"https://doi.org/10.1007/978-3-319-73171-1_27","url":null,"abstract":"","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"102 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90662444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-05-17DOI: 10.1002/https://dx.doi.org/10.1116/1.5033568
J. Scherschligt, J. Fedchak, Z. Ahmed, D. Barker, K. Douglass, S. Eckel, Edward Hanson, J. Hendricks, N. Klimov, T. Purdy, J. Ricker, Robinjeet Singh, J. Stone
The measurement science in realizing and disseminating the unit for pressure in the International System of Units (SI), the pascal (Pa), has been the subject of much interest at the National Institute of Standards and Technology (NIST). Modern optical-based techniques for pascal metrology have been investigated, including multi-photon ionization and cavity ringdown spectroscopy. Work is ongoing to recast the pascal in terms of quantum properties and fundamental constants and in so doing, make vacuum metrology consistent with the global trend toward quantum-based metrology. NIST has ongoing projects that interrogate the index of refraction of a gas using an optical cavity for low vacuum, and count background particles in high vacuum to extreme high vacuum using trapped laser-cooled atoms.
{"title":"Quantum-based vacuum metrology at NIST","authors":"J. Scherschligt, J. Fedchak, Z. Ahmed, D. Barker, K. Douglass, S. Eckel, Edward Hanson, J. Hendricks, N. Klimov, T. Purdy, J. Ricker, Robinjeet Singh, J. Stone","doi":"10.1002/https://dx.doi.org/10.1116/1.5033568","DOIUrl":"https://doi.org/10.1002/https://dx.doi.org/10.1116/1.5033568","url":null,"abstract":"The measurement science in realizing and disseminating the unit for pressure in the International System of Units (SI), the pascal (Pa), has been the subject of much interest at the National Institute of Standards and Technology (NIST). Modern optical-based techniques for pascal metrology have been investigated, including multi-photon ionization and cavity ringdown spectroscopy. Work is ongoing to recast the pascal in terms of quantum properties and fundamental constants and in so doing, make vacuum metrology consistent with the global trend toward quantum-based metrology. NIST has ongoing projects that interrogate the index of refraction of a gas using an optical cavity for low vacuum, and count background particles in high vacuum to extreme high vacuum using trapped laser-cooled atoms.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84812500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Microchannel plates (MCP) are the basis for many spatially-resolved single-particle detectors such as ICCD or I-sCMOS cameras employing image intensifiers (II), MCPs with delay-line anodes for the detection of cold gas particles or Cherenkov radiation detectors. However, the spatial characterization provided by an MCP is severely limited by cross-talk between its microchannels, rendering MCP and II ill-suited for autocorrelation measurements. Here we present a cross-talk subtraction method experimentally exemplified for an I-sCMOS based measurement of pseudo-thermal light second-order intensity autocorrelation function at the single- photon level. The method merely requires a dark counts measurement for calibration. A reference cross- correlation measurement certifies the cross-talk subtraction. While remaining universal for MCP applications, the presented cross-talk subtraction in particular simplifies quantum optical setups. With the possibility of autocorrelation measurement the signal needs no longer to be divided into two camera regions for a cross- correlation measurement, reducing the experimental setup complexity and increasing at least twofold the simultaneously employable camera sensor region.
{"title":"Microchannel plate cross-talk mitigation for spatial autocorrelation measurements","authors":"M. Lipka, Michał Parniak, W. Wasilewski","doi":"10.1063/1.5033559","DOIUrl":"https://doi.org/10.1063/1.5033559","url":null,"abstract":"Microchannel plates (MCP) are the basis for many spatially-resolved single-particle detectors such as ICCD or I-sCMOS cameras employing image intensifiers (II), MCPs with delay-line anodes for the detection of cold gas particles or Cherenkov radiation detectors. However, the spatial characterization provided by an MCP is severely limited by cross-talk between its microchannels, rendering MCP and II ill-suited for autocorrelation measurements. Here we present a cross-talk subtraction method experimentally exemplified for an I-sCMOS based measurement of pseudo-thermal light second-order intensity autocorrelation function at the single- photon level. The method merely requires a dark counts measurement for calibration. A reference cross- correlation measurement certifies the cross-talk subtraction. While remaining universal for MCP applications, the presented cross-talk subtraction in particular simplifies quantum optical setups. With the possibility of autocorrelation measurement the signal needs no longer to be divided into two camera regions for a cross- correlation measurement, reducing the experimental setup complexity and increasing at least twofold the simultaneously employable camera sensor region.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84955850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-04-04DOI: 10.1142/S2010194518600492
T. Gilliss, T. Gilliss, S. Alvis, I. Arnquist, F. Avignone, F. Avignone, A. Barabash, C. Barton, F. Bertrand, T. Bode, V. Brudanin, M. Busch, M. Busch, M. Buuck, T. Caldwell, T. Caldwell, Y. Chan, C. Christofferson, P. Chu, C. Cuesta, J. Detwiler, C. Dunagan, Y. Efremenko, Y. Efremenko, H. Ejiri, S. Elliott, G. Giovanetti, M. P. Green, M. P. Green, M. P. Green, J. Gruszko, I. Guinn, V. Guiseppe, C. Haufe, C. Haufe, L. Hehn, R. Henning, R. Henning, E. Hoppe, M. Howe, M. Howe, K. Keeter, M. Kidd, S. Konovalov, R. Kouzes, A. M. Lopez, R. Martin, R. Massarczyk, S. Meijer, S. Meijer, S. Mertens, S. Mertens, J. Myslik, C. O'Shaughnessy, C. O'Shaughnessy, G. Othman, G. Othman, W. Pettus, A. Poon, D. Radford, J. Rager, J. Rager, A. Reine, A. Reine, K. Rielage, R. Robertson, N. Ruof, B. Shanks, M. Shirchenko, A. Suriano, D. Tedeschi, R. Varner, S. Vasilyev, K. Vetter, K. Vorren, K. Vorren, B. White, J. Wilkerson, J. Wilkerson, J. Wilkerson, C. Wiseman, W. Xu, E. Yakushev, C. -. Yu, V. Yumatov, I. Zhitnikov, B. Zhu
The MAJORANA Collaboration has completed construction and is now operating an array of high purity Ge detectors searching for neutrinoless double-beta decay ($0nubetabeta$) in $^{76}$Ge. The array, known as the MAJORANA DEMONSTRATOR, is comprised of 44 kg of Ge detectors (30 kg enriched to 88% in $^{76}$Ge) installed in an ultra-low background compact shield at the Sanford Underground Research Facility in Lead, South Dakota. The primary goal of the DEMONSTRATOR is to establish a low-background design that can be scaled to a next-generation tonne-scale experiment. This work reports initial background levels in the $0nubetabeta$ region of interest. Also presented are recent physics results leveraging P-type point-contact detectors with sub-keV energy thresholds to search for physics beyond the Standard Model; first results from searches for bosonic dark matter, solar axions, Pauli exclusion principle violation, and electron decay have been published. Finally, this work discusses the proposed tonne-scale $^{76}$Ge $0nubetabeta$ LEGEND experiment.
马约拉纳合作项目已经完成建设，目前正在运行一组高纯度的锗探测器，在$^{76}$锗中寻找中微子双β衰变($0nubetabeta$)。该阵列被称为马约拉纳演示器，由44公斤的锗探测器(30公斤浓缩到88公斤)组成% in $^{76}$Ge) installed in an ultra-low background compact shield at the Sanford Underground Research Facility in Lead, South Dakota. The primary goal of the DEMONSTRATOR is to establish a low-background design that can be scaled to a next-generation tonne-scale experiment. This work reports initial background levels in the $0nubetabeta$ region of interest. Also presented are recent physics results leveraging P-type point-contact detectors with sub-keV energy thresholds to search for physics beyond the Standard Model; first results from searches for bosonic dark matter, solar axions, Pauli exclusion principle violation, and electron decay have been published. Finally, this work discusses the proposed tonne-scale $^{76}$Ge $0nubetabeta$ LEGEND experiment.
{"title":"Recent Results from the Majorana Demonstrator","authors":"T. Gilliss, T. Gilliss, S. Alvis, I. Arnquist, F. Avignone, F. Avignone, A. Barabash, C. Barton, F. Bertrand, T. Bode, V. Brudanin, M. Busch, M. Busch, M. Buuck, T. Caldwell, T. Caldwell, Y. Chan, C. Christofferson, P. Chu, C. Cuesta, J. Detwiler, C. Dunagan, Y. Efremenko, Y. Efremenko, H. Ejiri, S. Elliott, G. Giovanetti, M. P. Green, M. P. Green, M. P. Green, J. Gruszko, I. Guinn, V. Guiseppe, C. Haufe, C. Haufe, L. Hehn, R. Henning, R. Henning, E. Hoppe, M. Howe, M. Howe, K. Keeter, M. Kidd, S. Konovalov, R. Kouzes, A. M. Lopez, R. Martin, R. Massarczyk, S. Meijer, S. Meijer, S. Mertens, S. Mertens, J. Myslik, C. O'Shaughnessy, C. O'Shaughnessy, G. Othman, G. Othman, W. Pettus, A. Poon, D. Radford, J. Rager, J. Rager, A. Reine, A. Reine, K. Rielage, R. Robertson, N. Ruof, B. Shanks, M. Shirchenko, A. Suriano, D. Tedeschi, R. Varner, S. Vasilyev, K. Vetter, K. Vorren, K. Vorren, B. White, J. Wilkerson, J. Wilkerson, J. Wilkerson, C. Wiseman, W. Xu, E. Yakushev, C. -. Yu, V. Yumatov, I. Zhitnikov, B. Zhu","doi":"10.1142/S2010194518600492","DOIUrl":"https://doi.org/10.1142/S2010194518600492","url":null,"abstract":"The MAJORANA Collaboration has completed construction and is now operating an array of high purity Ge detectors searching for neutrinoless double-beta decay ($0nubetabeta$) in $^{76}$Ge. The array, known as the MAJORANA DEMONSTRATOR, is comprised of 44 kg of Ge detectors (30 kg enriched to 88% in $^{76}$Ge) installed in an ultra-low background compact shield at the Sanford Underground Research Facility in Lead, South Dakota. The primary goal of the DEMONSTRATOR is to establish a low-background design that can be scaled to a next-generation tonne-scale experiment. This work reports initial background levels in the $0nubetabeta$ region of interest. Also presented are recent physics results leveraging P-type point-contact detectors with sub-keV energy thresholds to search for physics beyond the Standard Model; first results from searches for bosonic dark matter, solar axions, Pauli exclusion principle violation, and electron decay have been published. Finally, this work discusses the proposed tonne-scale $^{76}$Ge $0nubetabeta$ LEGEND experiment.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85111194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-04-02DOI: 10.21175/RadProc.2016.21
G. Georgiev, V. Kozhuharov, L. Tsankov
A custom LED driver producing light pulses with very low intensity and O(10 ns) duration was designed and constructed. A microcontroller was employed to handle the amplitudes and the repetition rates of the output pulses. In addition, it also provided both a PC control of the system through a RS232 interface and an external trigger I/O. A WLS fibre directly coupled to a LED provides unique characteristics of the output light pulse. The combination of a quasi delta light pulse source and physical absorption-emission medium results in an output light profile maximally close to the plastic sctintillators. The light generator is intended to be used to test the response and the rate capability of different photodetectors. Its design, operational characteristics, and stability are described and discussed.
{"title":"DESIGN AND PERFORMANCE OF A LOW INTENSITY LED DRIVER FOR DETECTOR STUDY PURPOSES","authors":"G. Georgiev, V. Kozhuharov, L. Tsankov","doi":"10.21175/RadProc.2016.21","DOIUrl":"https://doi.org/10.21175/RadProc.2016.21","url":null,"abstract":"A custom LED driver producing light pulses with very low intensity and O(10 ns) duration was designed and constructed. A microcontroller was employed to handle the amplitudes and the repetition rates of the output pulses. In addition, it also provided both a PC control of the system through a RS232 interface and an external trigger I/O. A WLS fibre directly coupled to a LED provides unique characteristics of the output light pulse. The combination of a quasi delta light pulse source and physical absorption-emission medium results in an output light profile maximally close to the plastic sctintillators. The light generator is intended to be used to test the response and the rate capability of different photodetectors. Its design, operational characteristics, and stability are described and discussed.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89092340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-04-02DOI: 10.21175/RadJ.2016.03.034
G. Georgiev, V. Kozhuharov, L. Tsankov
The Positron Annihilation into Dark Matter Experiment (PADME) at LNF-INFN Linac aims to perform a search for dark photons in positron-on-target annihilation process. A key component of the setup is the tracking system which allows vetoing the bremsstrahlung-induced background. Different solutions for the detector will be shown and will be discussed. Attention will be paid to the possibility to construct a hybrid tracker based on plastic scintillator fibers read out by CCD matrices.
{"title":"THE PADME TRACKING SYSTEM","authors":"G. Georgiev, V. Kozhuharov, L. Tsankov","doi":"10.21175/RadJ.2016.03.034","DOIUrl":"https://doi.org/10.21175/RadJ.2016.03.034","url":null,"abstract":"The Positron Annihilation into Dark Matter Experiment (PADME) at LNF-INFN Linac aims to perform a search for dark photons in positron-on-target annihilation process. A key component of the setup is the tracking system which allows vetoing the bremsstrahlung-induced background. Different solutions for the detector will be shown and will be discussed. Attention will be paid to the possibility to construct a hybrid tracker based on plastic scintillator fibers read out by CCD matrices.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"48 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91487095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Accurate modelling of the T2K neutrino flux is crucial for a better understanding of neutrino interactions at the near and far detectors. Most of T2K neutrinos are created through in-flight decays of unstable hadrons, produced by interactions of 31 GeV/c protons in a long graphite target (90 cm). External hadron production data is used for correcting the flux model. The analysis presented here uses a new NA61 dataset, collected in 2009 using the full length replica of the T2K target. The preliminary results suggest a reduction of the hadronic interaction component of the neutrino flux uncertainty by ~50%, to errors of less than 5%.
{"title":"Constraining the T2K Neutrino Flux Prediction with 2009 NA61/SHINE Replica-Target Data","authors":"T. Vladisavljevic","doi":"10.5281/zenodo.1300546","DOIUrl":"https://doi.org/10.5281/zenodo.1300546","url":null,"abstract":"Accurate modelling of the T2K neutrino flux is crucial for a better understanding of neutrino interactions at the near and far detectors. Most of T2K neutrinos are created through in-flight decays of unstable hadrons, produced by interactions of 31 GeV/c protons in a long graphite target (90 cm). External hadron production data is used for correcting the flux model. The analysis presented here uses a new NA61 dataset, collected in 2009 using the full length replica of the T2K target. The preliminary results suggest a reduction of the hadronic interaction component of the neutrino flux uncertainty by ~50%, to errors of less than 5%.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83833775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-03-31DOI: 10.1142/S0217751X18430078
F. Danevich, V. Tretyak
Low counting experiments (search for double $beta$ decay and dark matter particles, measurements of neutrino fluxes from different sources, search for hypothetical nuclear and subnuclear processes, low background $alpha$, $beta$, $gamma$ spectrometry) require extremely low background of a detector. Scintillators are widely used to search for rare events both as conventional scintillation detectors and as cryogenic scintillating bolometers. Radioactive contamination of a scintillation material plays a key role to reach low level of background. Origin and nature of radioactive contamination of scintillators, experimental methods and results are reviewed. A programme to develop radiopure crystal scintillators for low counting experiments is discussed briefly.
{"title":"Radioactive contamination of scintillators","authors":"F. Danevich, V. Tretyak","doi":"10.1142/S0217751X18430078","DOIUrl":"https://doi.org/10.1142/S0217751X18430078","url":null,"abstract":"Low counting experiments (search for double $beta$ decay and dark matter particles, measurements of neutrino fluxes from different sources, search for hypothetical nuclear and subnuclear processes, low background $alpha$, $beta$, $gamma$ spectrometry) require extremely low background of a detector. Scintillators are widely used to search for rare events both as conventional scintillation detectors and as cryogenic scintillating bolometers. Radioactive contamination of a scintillation material plays a key role to reach low level of background. Origin and nature of radioactive contamination of scintillators, experimental methods and results are reviewed. A programme to develop radiopure crystal scintillators for low counting experiments is discussed briefly.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"92 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91287660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：