arXiv: Instrumentation and Detectors最新文献

{"title":"Status of INO-ICAL Detector","authors":"V. Singh","doi":"10.1007/978-3-319-73171-1_11","DOIUrl":"https://doi.org/10.1007/978-3-319-73171-1_11","url":null,"abstract":"","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"77 1","pages":"55-58"},"PeriodicalIF":0.0,"publicationDate":"2018-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83881499","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}

{"title":"Optimization of Amorphous Germanium Electrical Contacts and Surface Coatings on High Purity Germanium Radiation Detectors","authors":"M. Amman","doi":"10.13140/RG.2.2.34748.08327/1","DOIUrl":"https://doi.org/10.13140/RG.2.2.34748.08327/1","url":null,"abstract":"Semiconductor detector fabrication technologies developed decades ago are widely employed today to produce gamma-ray detectors from large volume, single crystals of high purity Ge (HPGe). Most all of these detectors are used exclusively for spectroscopy measurements and are of simple designs with only two impurity based electrical contacts produced with B implantation and Li diffusion. Though these technologies work well for the simple spectroscopy detectors, the Li contact in particular is thick and lacks room temperature stability in a manner that makes it inappropriate for many of the more complex detectors needed for gamma-ray imaging and particle tracking applications. Thin films of amorphous semiconductors such as sputter deposited amorphous Ge (a-Ge) are the basis for an alternative electrical contact that is easy to fabricate, thin, and can be finely segmented. The a-Ge also functions well as a passivation coating on the HPGe surfaces not covered by the electrical contacts. The properties of the a-Ge affect the performance of the resultant detectors, and these properties substantially depend on and are controllable through the sputter deposition process parameters. The subject of this paper is this interconnection of fabrication process parameters, a-Ge properties, and detector performance. The properties of a-Ge thin film electrical resistance, a-Ge contact electron injection, and room temperature storage stability were evaluated as a function of the sputter process parameters of sputter gas pressure and sputter gas H2 composition. Two different sputter deposition systems were used to produce a-Ge resistors and HPGe detectors with a-Ge electrical contacts. These samples were electrically characterized as a function of temperature. A summary of this study and discussion of the relevance of the findings to the optimization of detector performance are given in this paper.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89438742","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}

{"title":"X-ray coherent diffraction imaging with an objective lens: Towards three-dimensional mapping of thick polycrystals","authors":"A. Pedersen, V. Chamard, C. Detlefs, T. Zhou, D. Carbone, H. Poulsen","doi":"10.1103/PHYSREVRESEARCH.2.033031","DOIUrl":"https://doi.org/10.1103/PHYSREVRESEARCH.2.033031","url":null,"abstract":"We report on a new x-ray imaging method, which combines the high spatial resolution of coherent diffraction imaging with the ability of dark field microscopy to map grains within thick polycrystalline specimens. An x-ray objective serves to isolate a grain and avoid overlap of diffraction spots. Iterative oversampling routines are used to reconstruct the shape and strain field within the grain from the far field intensity pattern. The limitation on resolution caused by the finite numerical aperture of the objective is overcome by the Fourier synthesis of several diffraction patterns. We demonstrate the method by an experimental study of a ~500 nm Pt grain for the two cases of a real and a virtual image plane. In the latter case the spatial resolution is 13 nm rms. Our results confirm that no information on the pupil function of the lens is required and that lens aberrations are not critical.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"4 19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90287094","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}

{"title":"A novel water-Cherenkov detector design with retro-reflectors to produce antipodal rings","authors":"L. Berns","doi":"10.5281/zenodo.1288376","DOIUrl":"https://doi.org/10.5281/zenodo.1288376","url":null,"abstract":"Since Kamiokande, the basic design of water-Cherenkov detectors has not changed: the walls of a water tank are lined with photodetectors that capture Cherenkov photons produced by relativistic particles. However, with this design the majority of photons are lost in insensitive regions between photodetectors, while at the same time most photodetectors are outside the ring and remain dark. To fix both issues at once, we propose fixing retro-reflectors between all photodetectors. These devices will reflect uncollected photons back through their emission point onto photodetectors at the other side of the tank, producing a secondary, delayed Cherenkov ring. Numerical simulations show that, due to the parallax effect of this antipodal ring, our system can yield up to 2x improvement of detector vertex and angle resolutions. This improvement would be beneficial for kinematic selection of multi-ring events and would lower detector costs by decreasing the number of required photodetectors.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"26 1","pages":"462"},"PeriodicalIF":0.0,"publicationDate":"2018-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78973773","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}

{"title":"Internal Backgrounds in the Water Phase of SNO","authors":"I. Lam, F. C. Collaboration","doi":"10.5281/zenodo.1302929","DOIUrl":"https://doi.org/10.5281/zenodo.1302929","url":null,"abstract":"SNO+ is a neutrinoless double-beta decay ($0nubetabeta$) search experiment using 780 tonnes of tellurium-loaded liquid scintillator. The experiment is currently collecting data in the first of three planned phases, in which the detector is filled with ultrapure water. During this phase, the cleanliness of the water can be assayed using in situ measurements of $^{214}$Bi and $^{208}$Tl (daughter nuclei of $^{238}$U and $^{232}$Th, respectively). These results will both inform preparation for scintillator fill and support water phase physics analyses like the search for invisible nucleon decay modes.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74742798","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}

{"title":"Neutron detection in the SNO+ water phase.","authors":"Y. Liu, S. Andringa, D. Auty, F. Barão, R. Bayes, E. Caden, C. Grant, J. Grove, B. Krar, A. Latorre, L. Lebanowski, J. Lidgard, J. Maneira, P. Mekarski, S. Nae, T. Pershing, I. Semenec, K. Singh, P. Skensved, B. Tam, A. A. F. T. A. Collaboration","doi":"10.5281/zenodo.1300938","DOIUrl":"https://doi.org/10.5281/zenodo.1300938","url":null,"abstract":"SNO+ is a multipurpose neutrino experiment located approximately 2 km underground in SNOLAB, Sudbury, Canada. The detector started taking physics data in May 2017 and is currently completing its first phase, as a pure water Cherenkov detector. The low trigger threshold of the SNO+ detector allows for a substantial neutron detection efficiency, as observed with a deployed ^{241}Am^{9}Be source. Using a statistical analysis of one hour AmBe calibration data, we report a neutron capture constant of 208.2 + 2.1(stat.) us and a lower bound of the neutron detection efficiency of 46% at the center of the detector.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88245585","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}

{"title":"Real-Time Digital Signal Recovery for a Low-Pass Transfer Function System with Multiple Complex Poles","authors":"Jhinhwan Lee","doi":"10.20944/preprints201807.0388.v2","DOIUrl":"https://doi.org/10.20944/preprints201807.0388.v2","url":null,"abstract":"In order to solve the problems of waveform distortion and signal delay by many physical and electrical systems with linear low-pass transfer characteristics with multiple complex poles, a general digital-signal-processing (DSP)-based method of real-time recovery of the original source waveform from the distorted output waveform is proposed. From the convolution kernel representation of a multiple-pole low-pass transfer function with an arbitrary denominator polynomial with real valued coefficients, it is shown that the source waveform can be accurately recovered in real time using a particular moving average algorithm with real-valued DSP computations only, even though some or all of the poles are complex. The proposed digital signal recovery method is DC-accurate and unaffected by initial conditions, transient signals, and resonant amplitude enhancement. This method can be applied to most sensors and amplifiers operating close to their frequency response limits or around their resonance frequencies to accurately deconvolute the multiple-pole characteristics and to improve the overall performances of data acquisition systems and digital feedback control systems.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"72 7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78051900","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}

{"title":"A Letter of Intent for MATHUSLA: a dedicated displaced vertex detector above ATLAS or CMS.","authors":"C. Alpigiani, A. Ball, L. Barak, J. Beacham, Yan Benhammo, T. Cao, P. Camarri, R. Cardarelli, M. Rodríguez-Cahuantzi, J. Chou, D. Curtin, M. Diamond, G. Sciascio, M. Drewes, S. Eno, E. Etzion, R. Essig, J. Evans, O. Fischer, S. Giagu, Brandon Gomes, A. Haas, Y. Heng, G. Iaselli, K. Johns, M. Karagoz, L. Kasper, A. Kvam, D. Lazic, Liang Li, B. Liberti, Zhen Liu, H. Lubatti, G. Marsella, M. McCullough, D. McKeen, P. Meade, G. Mizrachi, D. Morrissey, M. M. Moshe, K. S. Caballero-Mora, Piter A. Paye Mamani, A. Policicchio, M. Proffitt, M. Reggiani-Guzzo, J. Rothberg, R. Santonico, M. Schioppa, J. Shelton, B. Shuve, M. Vasquez, D. Stolarski, A. Roeck, A. F. Tellez, G. T. Muñoz, M. I. M. Hernández, Y. Silver, S. A. Thayil, E. Torró, Yuhsin Tsai, J. C. Arteaga-Velázquez, G. Watts, C. Young, J. Zurita","doi":"10.2172/1493061","DOIUrl":"https://doi.org/10.2172/1493061","url":null,"abstract":"In this Letter of Intent (LOI) we propose the construction of MATHUSLA (MAssive Timing Hodoscope for Ultra-Stable neutraL pArticles), a dedicated large-volume displaced vertex detector for the HL-LHC on the surface above ATLAS or CMS. Such a detector, which can be built using existing technologies with a reasonable budget in time for the HL-LHC upgrade, could search for neutral long-lived particles (LLPs) with up to several orders of magnitude better sensitivity than ATLAS or CMS, while also acting as a cutting-edge cosmic ray telescope at CERN to explore many open questions in cosmic ray and astro-particle physics. We review the physics motivations for MATHUSLA and summarize its LLP reach for several different possible detector geometries, as well as outline the cosmic ray physics program. We present several updated background studies for MATHUSLA, which help inform a first detector-design concept utilizing modular construction with Resistive Plate Chambers (RPCs) as the primary tracking technology. We present first efficiency and reconstruction studies to verify the viability of this design concept, and we explore some aspects of its total cost. We end with a summary of recent progress made on the MATHUSLA test stand, a small-scale demonstrator experiment currently taking data at CERN Point 1, and finish with a short comment on future work.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82639241","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}

{"title":"The water system and radon measurement system of Jiangmen Underground Neutrino Observatory","authors":"Cong Guo","doi":"10.5281/ZENODO.1290267","DOIUrl":"https://doi.org/10.5281/ZENODO.1290267","url":null,"abstract":"The Jiangmen Underground Neutrino Observatory (JUNO) is a 20 ktons liquid scintillator detector with multi-purpose measurements. Due to low background requirement of the experiment, a multi-veto system ,which consists of a water Cherenkov detector and a top tracker detector, for passive shielding and cosmic muon detection is required.In order to keep the water quality good and remove the radon in the water, a ultrapure water system, a radon removal system adn radon concentration measurement system have been designed.In this poster, the detail informaton of them have been presented.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80743390","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}

{"title":"Flexible and Scalable Data-Qcquisition Using the $artdaq$ Toolkit","authors":"K. Biery, E. Flumerfelt, J. Freeman, W. Ketchum, G. Lukhanin, Adam Lyon, R. Rechenmacher, Ryan Rivera, L. Uplegger, M. Votava","doi":"10.2172/1460789","DOIUrl":"https://doi.org/10.2172/1460789","url":null,"abstract":"The Real-Time Systems Engineering Department of the Scientific Computing Division at Fermilab is developing a flexible, scalable, and powerful data-acquisition (DAQ) toolkit which serves the needs of experiments from bench-top hardware tests to large high-energy physics experiments. The toolkit provides data transport and event building capabilities with the option for experimenters to inject art analysis code at key points in the DAQ for filtering or monitoring. The toolkit also provides configuration management, run control, and low-level hardware communication utilities. Firmware blocks for several commercial data acquisition boards are provided, allowing experimenters to approach the DAQ from a high level. A fully-functional DAQ \"solution\" of the toolkit is provided in otsdaq, sacrificing some flexibility in favor of being ready-to-use. artdaq is being used for several current and upcoming experiments, and will continue to be refined and expanded for use in the next generation of neutrino and muon experiments.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85084809","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}