Pub Date : 2013-10-27DOI: 10.1109/NSSMIC.2013.6829608
D. Kang, D. Lee, M. Kim, C. Kim, M. Cho, H. Yoo, Y. Kim, H. Kim, J. Kim, K. Park, E. Lee, K. Lim, G. Cho
In wafer-scale CMOS image sensors, the 3-transistor structure suffers from its low speed. To overcome this limitation, we propose a digital pixel sensor which has a digital-pixel output instead of analog-pixel output as in a conventional 3-transistor pixel. The digital pixel sensor can provide a high frame because it eliminates analog-to-digital conversion time. In addition, it removes the noise from long analog-signal paths. As a prototype, we designed a 4.5mm × 4.0mm chip having 24 × 16 pixels of 100μm × 100μm using standard 0.18μm CMOS technology. With 2MHz clock, the readout time for each pixel was 6micro seconds. When 3000pixels are in each column of a full-wafer-size CMOS image sensor, 50fps can be achieved with the digital pixels based on pulse width modulation.
{"title":"Large area X-ray CMOS digital pixel sensor based on pulse width modulation for high frame rate applications","authors":"D. Kang, D. Lee, M. Kim, C. Kim, M. Cho, H. Yoo, Y. Kim, H. Kim, J. Kim, K. Park, E. Lee, K. Lim, G. Cho","doi":"10.1109/NSSMIC.2013.6829608","DOIUrl":"https://doi.org/10.1109/NSSMIC.2013.6829608","url":null,"abstract":"In wafer-scale CMOS image sensors, the 3-transistor structure suffers from its low speed. To overcome this limitation, we propose a digital pixel sensor which has a digital-pixel output instead of analog-pixel output as in a conventional 3-transistor pixel. The digital pixel sensor can provide a high frame because it eliminates analog-to-digital conversion time. In addition, it removes the noise from long analog-signal paths. As a prototype, we designed a 4.5mm × 4.0mm chip having 24 × 16 pixels of 100μm × 100μm using standard 0.18μm CMOS technology. With 2MHz clock, the readout time for each pixel was 6micro seconds. When 3000pixels are in each column of a full-wafer-size CMOS image sensor, 50fps can be achieved with the digital pixels based on pulse width modulation.","PeriodicalId":246351,"journal":{"name":"2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116860602","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 : 2013-10-26DOI: 10.1109/NSSMIC.2013.6829746
D. Breton, T. Cacérès, C. Cheikali, O. Duarte, X. Garrido, J. Maalmi, F. Mauger, P. Rusquart
SuperNEMO (SN) is the next-generation neutrinoless double beta decay (0νββ) experiment based on a tracking plus calorimetry technique. The construction of the demonstrator module has started in 2013 and its installation is expected in 2014 in LSM underground laboratory (France). The SN experiment is designed to measure both energy and time of flight of each beta particle emitted from ββ decays.The demonstrator is made of a calorimeter detector (712 channels) associated to a tracking detector (6102 channels). These detectors front-end electronics use an unified architecture based on six similar crates that each host up to 20 Front-End Boards (FEB) and 1 Control board (SN_CROB). The FEBs perform the acquisition of the detector channels. The SN_CROB board gathers the front-end data from the calorimeter or tracker FEBs and sends them through Ethernet link to the data acquisition (DAQ) system. It extracts the Trigger Primitive (TP) from the front-end data and sends them through serial link to the Trigger Board (SN_TB). Moreover the SN_CROB board distributes the clock, the trigger and the control signals for all the boards in a crate. It can also provide its own clock.
{"title":"Electronics for the SuperNEMO experiment, with focus on Control and ReadOut","authors":"D. Breton, T. Cacérès, C. Cheikali, O. Duarte, X. Garrido, J. Maalmi, F. Mauger, P. Rusquart","doi":"10.1109/NSSMIC.2013.6829746","DOIUrl":"https://doi.org/10.1109/NSSMIC.2013.6829746","url":null,"abstract":"SuperNEMO (SN) is the next-generation neutrinoless double beta decay (0νββ) experiment based on a tracking plus calorimetry technique. The construction of the demonstrator module has started in 2013 and its installation is expected in 2014 in LSM underground laboratory (France). The SN experiment is designed to measure both energy and time of flight of each beta particle emitted from ββ decays.The demonstrator is made of a calorimeter detector (712 channels) associated to a tracking detector (6102 channels). These detectors front-end electronics use an unified architecture based on six similar crates that each host up to 20 Front-End Boards (FEB) and 1 Control board (SN_CROB). The FEBs perform the acquisition of the detector channels. The SN_CROB board gathers the front-end data from the calorimeter or tracker FEBs and sends them through Ethernet link to the data acquisition (DAQ) system. It extracts the Trigger Primitive (TP) from the front-end data and sends them through serial link to the Trigger Board (SN_TB). Moreover the SN_CROB board distributes the clock, the trigger and the control signals for all the boards in a crate. It can also provide its own clock.","PeriodicalId":246351,"journal":{"name":"2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC)","volume":"358 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115942565","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 : 2013-10-24DOI: 10.1109/NSSMIC.2013.6829716
Atanas Batinkov, M. Rovere, L. Borrello, F. De Guio, D. Duggan, S. Di Guida
The Data Quality Monitoring Software proved to be a central tool in the Compact Muon Solenoid experiment. Its flexibility allowed its integration in several environments: online, for real-time detector monitoring; offline, for the final, fine-grained data certification. The usage of the Data Quality Monitoring software in the different environments and its integration in the Compact Muon Solenoid reconstruction software framework and in all production work-flows are presented. The main technical challenges and the adopted solutions to them will be also discussed with emphasis on functionality, longterm robustness and performance.
{"title":"The CMS Data Quality Monitoring Software: Experience and future improvements","authors":"Atanas Batinkov, M. Rovere, L. Borrello, F. De Guio, D. Duggan, S. Di Guida","doi":"10.1109/NSSMIC.2013.6829716","DOIUrl":"https://doi.org/10.1109/NSSMIC.2013.6829716","url":null,"abstract":"The Data Quality Monitoring Software proved to be a central tool in the Compact Muon Solenoid experiment. Its flexibility allowed its integration in several environments: online, for real-time detector monitoring; offline, for the final, fine-grained data certification. The usage of the Data Quality Monitoring software in the different environments and its integration in the Compact Muon Solenoid reconstruction software framework and in all production work-flows are presented. The main technical challenges and the adopted solutions to them will be also discussed with emphasis on functionality, longterm robustness and performance.","PeriodicalId":246351,"journal":{"name":"2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115784312","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 : 2013-10-23DOI: 10.1109/NSSMIC.2013.6829732
H. Akerstedt, K. Anderson, C. Bohm, G. Drake, S. Muschter, M. Oreglia, A. Paramonov, F. Tang
During 2014, upgraded-demonstrator electronics will be installed in a Tile calorimeter drawer to obtain long term experience with the redundant electronics proposed for a full upgrade scheduled for 2022.The new, FPGA-based system uses dense programmable logic, which must be proven to be sufficiently radiation tolerant. It must also be protected against radiation induced single event upsets that can corrupt memory and logic Radiation induced errors need to be detected and compensated for in time to minimize data loss, and also to avoid permanent damage. Strategies for detecting and correcting radiation induced errors in the Kintex-7 FPGAs on the Demonstrator electronics are evaluated and discussed.
{"title":"Radiation tolerance and mitigation strategies for FPGA:s in the ATLAS TileCal Demonstrator","authors":"H. Akerstedt, K. Anderson, C. Bohm, G. Drake, S. Muschter, M. Oreglia, A. Paramonov, F. Tang","doi":"10.1109/NSSMIC.2013.6829732","DOIUrl":"https://doi.org/10.1109/NSSMIC.2013.6829732","url":null,"abstract":"During 2014, upgraded-demonstrator electronics will be installed in a Tile calorimeter drawer to obtain long term experience with the redundant electronics proposed for a full upgrade scheduled for 2022.The new, FPGA-based system uses dense programmable logic, which must be proven to be sufficiently radiation tolerant. It must also be protected against radiation induced single event upsets that can corrupt memory and logic Radiation induced errors need to be detected and compensated for in time to minimize data loss, and also to avoid permanent damage. Strategies for detecting and correcting radiation induced errors in the Kintex-7 FPGAs on the Demonstrator electronics are evaluated and discussed.","PeriodicalId":246351,"journal":{"name":"2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124269218","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 : 2013-10-22DOI: 10.1109/NSSMIC.2013.6829416
I. Diószegi, B. Yu, G. Smith, N. Schaknowski, J. Fried, P. Vanier, C. Salwen, L. Forman
A new generation of coded aperture neutron imagers is being developed at Brookhaven National Laboratory. The detector of the camera is a position-sensitive thermal neutron chamber. The new device is a 3He-filled ionization chamber, which uses only anode and cathode planes. The anode is composed of an array of individual pads. The charge is collected on each of the individual 5×5 mm2 anode pads, (48×48 in total, corresponding to 24×24 cm2 sensitive area) and read out by application specific integrated circuits. The new design has several advantages for the coded-aperture applications in the field, compared to the previous generation of wire-grid based neutron detectors. Among these are its rugged design, lighter weight and use of non-flammable stopping gas. The pad-based readout is event by event, thus capable for high count rates, and also to perform data analysis and imaging on an event-by-event basis. The spatial resolution of the detector can be better than the pixel size by using charge sharing between adjacent pads. In this paper we report on the development and performance of the new, prototype pad-based neutron camera, and present the first stereoscopic coded aperture images of thermalized neutron sources.
{"title":"A new pad-based neutron detector for stereo coded-aperture thermal neutron imaging","authors":"I. Diószegi, B. Yu, G. Smith, N. Schaknowski, J. Fried, P. Vanier, C. Salwen, L. Forman","doi":"10.1109/NSSMIC.2013.6829416","DOIUrl":"https://doi.org/10.1109/NSSMIC.2013.6829416","url":null,"abstract":"A new generation of coded aperture neutron imagers is being developed at Brookhaven National Laboratory. The detector of the camera is a position-sensitive thermal neutron chamber. The new device is a 3He-filled ionization chamber, which uses only anode and cathode planes. The anode is composed of an array of individual pads. The charge is collected on each of the individual 5×5 mm2 anode pads, (48×48 in total, corresponding to 24×24 cm2 sensitive area) and read out by application specific integrated circuits. The new design has several advantages for the coded-aperture applications in the field, compared to the previous generation of wire-grid based neutron detectors. Among these are its rugged design, lighter weight and use of non-flammable stopping gas. The pad-based readout is event by event, thus capable for high count rates, and also to perform data analysis and imaging on an event-by-event basis. The spatial resolution of the detector can be better than the pixel size by using charge sharing between adjacent pads. In this paper we report on the development and performance of the new, prototype pad-based neutron camera, and present the first stereoscopic coded aperture images of thermalized neutron sources.","PeriodicalId":246351,"journal":{"name":"2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC)","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115594785","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 : 2013-10-22DOI: 10.1109/NSSMIC.2013.6829830
Kisung Lee, A. Bolotnikov, Seungbin Bae, U. Roy, G. Camarda, M. Petryk, Yonggang Cui, A. Hossain, Ge Yang, V. Dedic, Kihyun Kim, R. James
The goal of our study was twofold: To determine the distribution of signals in position-sensitive CdZnTe (CZT)-based virtual Frisch-grid detectors (VFGDs) with side-sensing pads, and to evaluate the feasibility of accurately measuring the X- and Y-coordinates where a photon interaction occurs within a single VFGD module. Accordingly, we collected signals from an anode, and from four or eight sensing pads attached to four sides of a CZT crystal. We assessed the anode's energy spectra and derived histograms from the side electrodes so to evaluate the feasibility of employing VFGDs as imaging devices. Using a highly collimated 30-keV X-ray beam at the National Synchrotron Light Source (NSLS), and applying some corrections to the raw signal data, we found that the signals acquired from one side of the detector were well separated from those measured at the opposite side. We also determined the photon interaction points by conventional Anger logic and via a more sophisticated statistics-based positioning (SBP) algorithm. With the current VFGD configuration, preliminary results showed that our positioning methods could increase the resolution above the intrinsic resolution of the VFGD (6 mm). Using SBP, we achieved a resolution below 1 millimeter for low-energy X- and gamma-rays.
{"title":"Use of virtual Frisch-grid CdZnTe detectors to attain sub-millimeter spatial resolution","authors":"Kisung Lee, A. Bolotnikov, Seungbin Bae, U. Roy, G. Camarda, M. Petryk, Yonggang Cui, A. Hossain, Ge Yang, V. Dedic, Kihyun Kim, R. James","doi":"10.1109/NSSMIC.2013.6829830","DOIUrl":"https://doi.org/10.1109/NSSMIC.2013.6829830","url":null,"abstract":"The goal of our study was twofold: To determine the distribution of signals in position-sensitive CdZnTe (CZT)-based virtual Frisch-grid detectors (VFGDs) with side-sensing pads, and to evaluate the feasibility of accurately measuring the X- and Y-coordinates where a photon interaction occurs within a single VFGD module. Accordingly, we collected signals from an anode, and from four or eight sensing pads attached to four sides of a CZT crystal. We assessed the anode's energy spectra and derived histograms from the side electrodes so to evaluate the feasibility of employing VFGDs as imaging devices. Using a highly collimated 30-keV X-ray beam at the National Synchrotron Light Source (NSLS), and applying some corrections to the raw signal data, we found that the signals acquired from one side of the detector were well separated from those measured at the opposite side. We also determined the photon interaction points by conventional Anger logic and via a more sophisticated statistics-based positioning (SBP) algorithm. With the current VFGD configuration, preliminary results showed that our positioning methods could increase the resolution above the intrinsic resolution of the VFGD (6 mm). Using SBP, we achieved a resolution below 1 millimeter for low-energy X- and gamma-rays.","PeriodicalId":246351,"journal":{"name":"2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122807690","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 : 2013-10-01DOI: 10.1109/NSSMIC.2013.6829711
Soon Ho Park, Jae Hwan Kim, M. Na
In certain circumstances of the severe accident, it is essential to confirm major parameters of a nuclear power plant. The reason of confirmation is to check the status of a nuclear power plant and to respond appropriately to each situation. Particularly, the reactor vessel water level is important data in order to confirm the reactor core condition. Therefore, in preparation for the uncertainty of a sensor in severe accident situations, the reactor vessel water level was predicted using a group method of data handling (GMDH) algorithm. The prediction model of a reactor vessel water level was developed based upon numerical simulation data such as development data and test data. These data were generated by simulating the severe accidents of a total of 810 cases using MAAP4 code about the OPR1000 nuclear power plant. As a result of predictions, the prediction performance of the developed GMDH model was quite satisfactory. Therefore, the developed GMDH model could be successfully applied for providing effective information for operators in severe accident situations.
{"title":"Prediction of reactor vessel water level using GMDH in severe accidents due to LOCA","authors":"Soon Ho Park, Jae Hwan Kim, M. Na","doi":"10.1109/NSSMIC.2013.6829711","DOIUrl":"https://doi.org/10.1109/NSSMIC.2013.6829711","url":null,"abstract":"In certain circumstances of the severe accident, it is essential to confirm major parameters of a nuclear power plant. The reason of confirmation is to check the status of a nuclear power plant and to respond appropriately to each situation. Particularly, the reactor vessel water level is important data in order to confirm the reactor core condition. Therefore, in preparation for the uncertainty of a sensor in severe accident situations, the reactor vessel water level was predicted using a group method of data handling (GMDH) algorithm. The prediction model of a reactor vessel water level was developed based upon numerical simulation data such as development data and test data. These data were generated by simulating the severe accidents of a total of 810 cases using MAAP4 code about the OPR1000 nuclear power plant. As a result of predictions, the prediction performance of the developed GMDH model was quite satisfactory. Therefore, the developed GMDH model could be successfully applied for providing effective information for operators in severe accident situations.","PeriodicalId":246351,"journal":{"name":"2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115230701","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 : 2013-10-01DOI: 10.1109/NSSMIC.2013.6829074
H. Tashima, Hiroshi Ito, T. Yamaya
The advanced depth-of-interaction positron emission tomography (PET) detectors have been improved to provide three-dimensionally uniform detector resolution. These detectors allow a geometry that places the detectors very close to imaging subjects, because they can maintain high spatial resolution even in the peripheral region in the field-of-view (FOV) without loss of sensitivity. In this study, we are proposing a helmet-PET geometry consisting of a hemispheric-shaped detector and a jaw detector. The key points of the geometry are the closely positioned detectors and the detector covering the jaw. For each point in the FOV, we calculated the geometrical sensitivity as the relative coverage of the solid angle where the coincidence measurement was possible. We found that the hemispheric-shaped geometry had high sensitivity for the cerebrum region. In addition, the jaw detector significantly improved the sensitivity at the center region of the hemisphere, where the cerebellum is positioned during PET measurement. High sensitivity and quantitative accuracy for the cerebellum region are important especially for functional brain imaging because this region may be used as a reference value in kinetic analysis. Geometrical analysis showed that the proposed geometry has good potential for highly sensitive and accurate measurement of brain functions. In addition, numerical simulations showed the proposed geometry increases image quality especially for the central region.
{"title":"A proposed helmet-PET with a jaw detector enabling high-sensitivity brain imaging","authors":"H. Tashima, Hiroshi Ito, T. Yamaya","doi":"10.1109/NSSMIC.2013.6829074","DOIUrl":"https://doi.org/10.1109/NSSMIC.2013.6829074","url":null,"abstract":"The advanced depth-of-interaction positron emission tomography (PET) detectors have been improved to provide three-dimensionally uniform detector resolution. These detectors allow a geometry that places the detectors very close to imaging subjects, because they can maintain high spatial resolution even in the peripheral region in the field-of-view (FOV) without loss of sensitivity. In this study, we are proposing a helmet-PET geometry consisting of a hemispheric-shaped detector and a jaw detector. The key points of the geometry are the closely positioned detectors and the detector covering the jaw. For each point in the FOV, we calculated the geometrical sensitivity as the relative coverage of the solid angle where the coincidence measurement was possible. We found that the hemispheric-shaped geometry had high sensitivity for the cerebrum region. In addition, the jaw detector significantly improved the sensitivity at the center region of the hemisphere, where the cerebellum is positioned during PET measurement. High sensitivity and quantitative accuracy for the cerebellum region are important especially for functional brain imaging because this region may be used as a reference value in kinetic analysis. Geometrical analysis showed that the proposed geometry has good potential for highly sensitive and accurate measurement of brain functions. In addition, numerical simulations showed the proposed geometry increases image quality especially for the central region.","PeriodicalId":246351,"journal":{"name":"2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115401125","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 : 2013-10-01DOI: 10.1109/NSSMIC.2013.6829694
G. Carini, S. Boutet, M. Chollet, A. Dragone, G. Haller, P. Hart, S. Herrmann, C. Kenney, J. Koglin, H. Lemke, M. Messerschmidt, S. Nelson, J. Pines, A. Robert, S. Song, J. Thayer, G. Williams, D. Zhu
A series of measurements to validate the performance of the CSPAD were performed at the Stanford Synchrotron Radiation Lightsource (SSRL) and at the Linac Coherent Light Source (LCLS). These were important steps to complete the development of the detector, characterize its behavior under typical experimental conditions, and implement calibration procedures. In this paper we report differences observed in the response of the CSPAD to these very different sources. Particularly the linearity at very high fluence was investigated with correlation plots and weighting-function response.
{"title":"Measurements at synchrotrons and FELs: Some differences observed with the CSPAD","authors":"G. Carini, S. Boutet, M. Chollet, A. Dragone, G. Haller, P. Hart, S. Herrmann, C. Kenney, J. Koglin, H. Lemke, M. Messerschmidt, S. Nelson, J. Pines, A. Robert, S. Song, J. Thayer, G. Williams, D. Zhu","doi":"10.1109/NSSMIC.2013.6829694","DOIUrl":"https://doi.org/10.1109/NSSMIC.2013.6829694","url":null,"abstract":"A series of measurements to validate the performance of the CSPAD were performed at the Stanford Synchrotron Radiation Lightsource (SSRL) and at the Linac Coherent Light Source (LCLS). These were important steps to complete the development of the detector, characterize its behavior under typical experimental conditions, and implement calibration procedures. In this paper we report differences observed in the response of the CSPAD to these very different sources. Particularly the linearity at very high fluence was investigated with correlation plots and weighting-function response.","PeriodicalId":246351,"journal":{"name":"2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115442242","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 : 2013-10-01DOI: 10.1109/NSSMIC.2013.6829589
I. Sacco, P. Fischer, A. Gola, C. Piemonte
Silicon Photo Multiplier are becoming widely used, coupled with suited scintillating crystals, as gamma-ray detectors in high energy physics and medical imaging applications. We present a novel device topology, able to reach sub-millimeter spatial resolution with very few readout channels. The basic idea consists to connect each cell of a SiPM to one of the several readout channels. A cluster of photons, for example from a scintillator, illuminates the cells and the signal is shared between the readout channels, in such a way that the amplitudes include the spatial information. Two prototype generations have already been produced and they both have shown very good results in terms of spatial resolution: they are able to identify crystal arrays down to 0.8 × 0.8mm2 crystals, with only four readout channels. The measurements with the prototyped devices and future outlook are presented.
{"title":"Interpolating Silicon Photo-Multiplier: A novel position sensitive device with submillimeter spatial resolution and depth of interaction capability","authors":"I. Sacco, P. Fischer, A. Gola, C. Piemonte","doi":"10.1109/NSSMIC.2013.6829589","DOIUrl":"https://doi.org/10.1109/NSSMIC.2013.6829589","url":null,"abstract":"Silicon Photo Multiplier are becoming widely used, coupled with suited scintillating crystals, as gamma-ray detectors in high energy physics and medical imaging applications. We present a novel device topology, able to reach sub-millimeter spatial resolution with very few readout channels. The basic idea consists to connect each cell of a SiPM to one of the several readout channels. A cluster of photons, for example from a scintillator, illuminates the cells and the signal is shared between the readout channels, in such a way that the amplitudes include the spatial information. Two prototype generations have already been produced and they both have shown very good results in terms of spatial resolution: they are able to identify crystal arrays down to 0.8 × 0.8mm2 crystals, with only four readout channels. The measurements with the prototyped devices and future outlook are presented.","PeriodicalId":246351,"journal":{"name":"2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115485431","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}
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