arXiv: Instrumentation and Detectors最新文献

{"title":"Flat-Field and Colour Correction for the Raspberry Pi Camera Module","authors":"R. Bowman, Boyko Vodenicharski, J. Collins, Julian Stirling","doi":"10.5334/joh.20","DOIUrl":"https://doi.org/10.5334/joh.20","url":null,"abstract":"The Raspberry Pi camera module is widely used in open source hardware projects as a low cost camera sensor. However, when the stock lens is removed and replaced with other custom optics the sensor will return a non-uniform background and colour response which hampers the use of this excellent and popular image sensor. This effect is found to be due to the sensor's optical design as well as due to built-in corrections in the GPU firmware, which is optimised for a short focal length lens. In this work we characterise and correct the vignetting and colour crosstalk found in the Raspberry Pi camera module v2, presenting two measures that greatly improve the quality of images using custom optics. First, we use a custom \"lens shading table\" to correct for vignetting of the image, which can be done in real time in the camera's existing processing pipeline (i.e. the camera's low-latency preview is corrected). The second correction is a colour unmixing matrix, which enables us to reverse the loss in saturation at the edge of the image, though this requires post-processing of the image. With both of these corrections in place, it is possible to obtain uniformly colour-corrected images, at the expense of slightly increased noise at the edges of the image.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80194280","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 APOLLO ATCA Platform","authors":"A. Albert, J. Butler, Z. Demiragli, K. Finelli, D. Gastler, E. Hazen, J. Rohlf, S. Yuan, T. C. Paiva, V. Outschoorn, S. Willocq, C. Strohman, P. Wittich, R. Glein, K. Ulmer","doi":"10.22323/1.370.0120","DOIUrl":"https://doi.org/10.22323/1.370.0120","url":null,"abstract":"We have developed a novel and generic open-source platform - Apollo - which simplifies the design of custom Advanced Telecommunications Computing Architecture (ATCA) blades by factoring the design into generic infrastructure and application-specific parts. The Apollo \"Service Module\" provides the required ATCA Intelligent Platform Management Controller, power entry and conditioning, a powerful system-on-module (SoM) computer, and flexible clock and communications infrastructure. The Apollo \"Command Module\" is customized for each application and typically includes two large field-programmable gate arrays, several hundred optical fiber interfaces operating at speeds up to 28 Gbps, memories, and other supporting infrastructure. The command and service module boards can be operated together or independently on the bench without need for an ATCA shelf.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73848533","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":"Quantum-enhanced interferometry for axion searches","authors":"D. Martynov, H. Miao","doi":"10.1103/physrevd.101.095034","DOIUrl":"https://doi.org/10.1103/physrevd.101.095034","url":null,"abstract":"We propose an experiment to search for axions and axion-like-particles in the galactic halo using quantum-enhanced interferometry. This proposal is related to the previously reported ideas (Phys. Rev. D 98, 035021, Phys. Rev. Lett. 121, 161301, Phys. Rev. D 100, 023548) but searches for axions in the mass range from $10^{-16}$ eV up to $10^{-8}$ eV using two coupled optical cavities. We also show how to apply squeezed states of light to enhance the sensitivity of the experiment similar to the gravitational-wave detectors. The proposed experiment has a potential to be further scaled up to a multi-km long detector. We show that such an instrument has a potential to set constrains of the axion-photon coupling coefficient of $sim 10^{-18}$ GeV$^{-1}$ for axion masses of $10^{-16}$ eV or detect the signal.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"63 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72593400","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":"Characterization of a supersonic gas jet via laser-induced photoelectron ionization","authors":"A. Golombek, L. Danzig, A. Wucher","doi":"10.1016/j.nimb.2020.07.019","DOIUrl":"https://doi.org/10.1016/j.nimb.2020.07.019","url":null,"abstract":"","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"73 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77784336","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":"Traceably calibrated scanning Hall probe microscopy at room temperature","authors":"M. Gerken, A. Solignac, Davood Momeni Pakdehi, A. Manzin, T. Weimann, K. Pierz, S. Sievers, Hans Werner Schumacher Physikalisch-Technische Bundesanstalt, Braunschweig, H Germany, Spec, Cea, Cnrs, U. Paris-Saclay, C. Saclay, Gif-sur-Yvette cedex, France., Istituto Nazionale di Ricerca Metrologica, Torino, Italy.","doi":"10.5194/jsss-9-391-2020","DOIUrl":"https://doi.org/10.5194/jsss-9-391-2020","url":null,"abstract":"Fabrication, characterization and comparison of gold and graphene micro- and nano-size Hall sensors for room temperature scanning magnetic field microscopy applications is presented. The Hall sensors with active areas from 5 $mu$m down to 50 nm were fabricated by electron-beam lithography. The calibration of the Hall sensors in an external magnetic field revealed a sensitivity of 3.2 mV/(AT) $pm$ 0.3 % for gold and 1615 V/(AT) $pm$ 0.5 % for graphene at room temperature. The gold sensors were fabricated on silicon nitride cantilever chips suitable for integration into commercial scanning probe microscopes, allowing scanning Hall microscopy (SHM) under ambient conditions and controlled sensor-sample distance. The height dependent stray field distribution of a magnetic scale was characterized using a 5 $mu$m gold Hall sensor. The uncertainty of the entire Hall sensor based scanning and data acquisition process was analyzed allowing traceably calibrated SHM measurements. The measurement results show good agreement with numerical simulations within the uncertainty budget.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79892643","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":"Progress Towards Ramsey Hyperfine Spectroscopy in ASACUSA","authors":"A. Nanda","doi":"10.1142/9789811213984_0051","DOIUrl":"https://doi.org/10.1142/9789811213984_0051","url":null,"abstract":"This proceedings contribution reports on progress on the design of a Ramsey-type spectrometer that will be used for the spectroscopy of the ground-state hyperfine structure of both hydrogen and deuterium.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"80 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88589341","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":"Impact of charge trapping on the energy resolution of Ge detectors for rare-event physics searches","authors":"D. Mei, Mukund Bharadwaj, W.-Z. Wei, R. Panth, Jing Liu, H. Mei, Yangyang Li, P. Acharya, S. Bhattarai, K. Kooi, M. Raut, Xiansong Sun, Alex Kirkvold, Kunming Dong, Xianghua Meng, Guojian Wang, Gang Yang","doi":"10.1088/1361-6471/AB9796","DOIUrl":"https://doi.org/10.1088/1361-6471/AB9796","url":null,"abstract":"Charge trapping degrades the energy resolution of germanium (Ge) detectors, which require to have increased experimental sensitivity in searching for dark matter and neutrinoless double-beta decay. We investigate the charge trapping processes utilizing nine planar detectors fabricated from USD-grown crystals with well-known net impurity levels. The charge collection efficiency as a function of charge trapping length is derived from the Shockley-Ramo theorem. Furthermore, we develop a model that correlates the energy resolution with the charge collection efficiency. This model is then applied to the experimental data. As a result, charge collection efficiency and charge trapping length are determined accordingly. Utilizing the Lax model (further developed by CDMS collaborators), the absolute impurity levels are determined for nine detectors. The knowledge of these parameters when combined with other traits such as the Fano factor serve as a reliable indicator of the intrinsic nature of charge trapping within the crystals. We demonstrate that electron trapping is more severe than hole trapping in a p-type detector and the charge collection efficiency depends on the absolute impurity level of the Ge crystal when an adequate bias voltage is applied to the detector. Negligible charge trapping is found when the absolute impurity level is less than 1.0$times$10$^{11}/$cm$^{3}$ for collecting electrons and 2.0$times$10$^{11}/$cm$^{3}$ for collecting holes.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88790341","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 flexible, open-source radio-frequency driver for acousto-optic and electro-optic devices","authors":"D. Barker, N. Pisenti, A. Restelli, J. Scherschligt, J. Fedchak, G. Campbell, S. Eckel","doi":"10.5281/zenodo.3361540","DOIUrl":"https://doi.org/10.5281/zenodo.3361540","url":null,"abstract":"We present a design for a radio-frequency driver that leverages telecom amplifiers to achieve high power output and wide bandwidth. The design consists of two compact printed circuit boards (total area $ 1$ W of output power over a $10$ MHz to $1.1$ GHz frequency range, and $geq 5$ W from $20$ MHz to $100$ MHz. The driver circuit includes auxiliary components for analog frequency and amplitude modulation ($approx 70$ kHz bandwidth), as well as digital power switching ($> 30$ dB of extinction within $40$ ns and final extinction $> 90$ dB). The radio-frequency source can also be digitally switched between an external input and an integrated voltage-controlled oscillator. Our design is motivated by the need for flexible, inexpensive drivers of optically active devices, such as acousto-optic and electro-optic modulators.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73395945","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":"Millimeter-wave detector for gyrotron power monitoring","authors":"Weiye Xu, Handong Xu, Fukun Liu, Xiaojie Wang","doi":"10.1063/5.0015430","DOIUrl":"https://doi.org/10.1063/5.0015430","url":null,"abstract":"The real-time power monitoring of gyrotron is one of the key issues in the operation of electron cyclotron resonance heating system. The detector can be used for real-time power monitoring. We analyzed the principle of diode detection and designed a D-band wideband detector based on Schottky diode in this paper. The detector includes a waveguide-to-microstrip transition, a matching circuit, a diode, and a low pass filter. A novel waveguide-to-microstrip transition was developed based on probe coupling. A wideband lossy matching circuit was developed based on tapered-line and series matching resistor. The simulation results show that when the input power is -30dBm at 140 GHz, the detection sensitivity is about 1600V/W.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83023690","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":"Detector Technologies for CLIC","authors":"A. Hoffman, G. Pares, T. Fritzsch, M. Rothermund, H. Jansen, K. Krüger, F. Sefkow, A. Velyka, J. Schwandt, I. Perić, L. Emberger, C. Graf, A. Macchiolo, F. Simon, M. Szalay, N. Kolk, H. Abramowicz, Y. Benhammou, O. Borysov, M. Borysova, A. Joffe, S. Kananov, A. Levy, I. Levy, G. Eigen, R. Bugiel, S. Bugiel, M. Firlej, T. Fiutowski, M. Idzik, J. Moroń, K. Swientek, P. Terlecki, P. Renstrom, B. Turbiarz, T. Wojto'n, L. Zawiejski, E. Firu, V. Ghenescu, A. Neagu, T. Preda, I. Boyko, Y. Nefedov, A. Rymbekova, A. Sapronov, G. Shelkov, A. Zhemchugov, A. Ruiz-Jimeno, I. Vila, E. Fullana, J. Fuster, P. López, M. Perell'o, M. Villarejo, M. Vos, J. Alozy, N. Tehrani, D. Arominski, R. Sune, F. Boyer, E. Brondolin, M. Buckland, M. Campbell, D. Dannheim, K. Dette, F. D. Ramos, N. E. Plaja, K. Elsener, A. Fiergolski, C. F. Rojas, C. Grefe, D. Hynds, W. Klempt, I. Kremastiotis, J. Kröger, S. Kulis, E. Leogrande, L. Linssen, X. L. Cudie, A. Lucaci-Timoce, M. Munker, L. Musa, A. Nürnberg, F. Nuiry, E. Codina, H. Pernegger,","doi":"10.23731/CYRM-2019-001","DOIUrl":"https://doi.org/10.23731/CYRM-2019-001","url":null,"abstract":"The Compact Linear Collider (CLIC) is a high-energy high-luminosity linear electron-positron collider under development. It is foreseen to be built and operated in three stages, at centre-of-mass energies of 380 GeV, 1.5 TeV and 3 TeV, respectively. It offers a rich physics program including direct searches as well as the probing of new physics through a broad set of precision measurements of Standard Model processes, particularly in the Higgs-boson and top-quark sectors. The precision required for such measurements and the specific conditions imposed by the beam dimensions and time structure put strict requirements on the detector design and technology. This includes low-mass vertexing and tracking systems with small cells, highly granular imaging calorimeters, as well as a precise hit-time resolution and power-pulsed operation for all subsystems. A conceptual design for the CLIC detector system was published in 2012. Since then, ambitious R&D programmes for silicon vertex and tracking detectors, as well as for calorimeters have been pursued within the CLICdp, CALICE and FCAL collaborations, addressing the challenging detector requirements with innovative technologies. This report introduces the experimental environment and detector requirements at CLIC and reviews the current status and future plans for detector technology R&D.","PeriodicalId":8827,"journal":{"name":"arXiv: Instrumentation and Detectors","volume":"48 1","pages":"1"},"PeriodicalIF":0.0,"publicationDate":"2019-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74213052","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}