Data acquisition system for the PoGOLite astronomical hard X-ray polarimeter

T. Tanaka, M. Arimoto, M. Axelsson, C. I. Björnsson, G. Bogaert, P. Carlson, M. Cooney, W. Craig, O. Engdegård, Y. Fukazawa, S. Gunji, L. Hjalmarsdotter, T. Kamae, Y. Kanai, Jun Kataoka, J. Katsuta, N. Kawai, J. Kazejev, M. Kiss, W. Klamra & 19 others S. Larsson, G. Madejski, C. Marini Bettolo, T. Mizuno, J. Ng, M. Nomachi, H. Odaka, M. Pearce, L. Ruckman, F. Ryde, H. Tajima, H. Takahashi, T. Takahashi, T. Thurston, M. Ueno, G. Varner, T. Ylinen, H. Yoshida, T. Yuasa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

The PoGOLite is a new balloon-borne instrument to measure the polarization of hard X-rays / soft gamma-rays in the 25-80 keV energy range for the first time. In order to detect the polarization, PoGOLite measures the azimuthal angle asymmetry of Compton scattering and the subsequent photo-absorption in an array of detectors. This array consists of 217 well-type phoswich detector cells (PDCs) surrounded by a side anti-coincidence shield (SAS) composed of 54 segments of BGO crystals. At balloon altitude, the intensity of backgrounds due to cosmic-ray charged particles, atmospheric gamma-rays and neutrons is extremely high, typically a few hundred Hz per unit. Hence the data acquisition (DAQ) system of PoGOLite is required to handle more than 270 signals simultaneously, and detect weak signals from astrophysical objects (100mCrab, 1.5cs-1 in 25-80 keV ) under such a severe environment. We have developed a new DAQ system consisting of front-end electronics, waveform digitizer, Field Programmable Gate Array (FPGA) and a microprocessor. In this system, all output signals of PDC / SAS are fed into individual charge-sensitive amplifier and then digitized to 12 bit accuracy at 24MSa/s by pipelined analog to digital converters. A DAQ board for the PDC records waveforms which will be examined in an off-line analysis to distinguish signals from the background events and measure the energy spectrum and polarization of targets. A board for the SAS records hit pattern to be used for background rejection. It also continuously records a pulse-height analysis (PHA) histogram to monitor incident background flux. These basic functions of the DAQ system were verified in a series of beam tests.

Original languageEnglish
Title of host publicationIEEE Nuclear Science Symposium Conference Record
Pages445-449
Number of pages5
Volume1
DOIs
Publication statusPublished - 2007
Externally publishedYes
Event2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC - Honolulu, HI
Duration: 2007 Oct 272007 Nov 3

Other

Other2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC
CityHonolulu, HI
Period07/10/2707/11/3

Fingerprint

Polarimeters
Data acquisition
Detectors
X rays
Balloons
Polarization
Gamma rays
Compton scattering
Cosmic rays
Digital to analog conversion
Charged particles
Field programmable gate arrays (FPGA)
Microprocessor chips
Neutrons
Electronic equipment
Fluxes
Crystals

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Industrial and Manufacturing Engineering

Cite this

Tanaka, T., Arimoto, M., Axelsson, M., Björnsson, C. I., Bogaert, G., Carlson, P., ... Yuasa, T. (2007). Data acquisition system for the PoGOLite astronomical hard X-ray polarimeter. In IEEE Nuclear Science Symposium Conference Record (Vol. 1, pp. 445-449). [4436365] https://doi.org/10.1109/NSSMIC.2007.4436365

Data acquisition system for the PoGOLite astronomical hard X-ray polarimeter. / Tanaka, T.; Arimoto, M.; Axelsson, M.; Björnsson, C. I.; Bogaert, G.; Carlson, P.; Cooney, M.; Craig, W.; Engdegård, O.; Fukazawa, Y.; Gunji, S.; Hjalmarsdotter, L.; Kamae, T.; Kanai, Y.; Kataoka, Jun; Katsuta, J.; Kawai, N.; Kazejev, J.; Kiss, M.; Klamra, W.; Larsson, S.; Madejski, G.; Bettolo, C. Marini; Mizuno, T.; Ng, J.; Nomachi, M.; Odaka, H.; Pearce, M.; Ruckman, L.; Ryde, F.; Tajima, H.; Takahashi, H.; Takahashi, T.; Thurston, T.; Ueno, M.; Varner, G.; Ylinen, T.; Yoshida, H.; Yuasa, T.

IEEE Nuclear Science Symposium Conference Record. Vol. 1 2007. p. 445-449 4436365.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Tanaka, T, Arimoto, M, Axelsson, M, Björnsson, CI, Bogaert, G, Carlson, P, Cooney, M, Craig, W, Engdegård, O, Fukazawa, Y, Gunji, S, Hjalmarsdotter, L, Kamae, T, Kanai, Y, Kataoka, J, Katsuta, J, Kawai, N, Kazejev, J, Kiss, M, Klamra, W, Larsson, S, Madejski, G, Bettolo, CM, Mizuno, T, Ng, J, Nomachi, M, Odaka, H, Pearce, M, Ruckman, L, Ryde, F, Tajima, H, Takahashi, H, Takahashi, T, Thurston, T, Ueno, M, Varner, G, Ylinen, T, Yoshida, H & Yuasa, T 2007, Data acquisition system for the PoGOLite astronomical hard X-ray polarimeter. in IEEE Nuclear Science Symposium Conference Record. vol. 1, 4436365, pp. 445-449, 2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC, Honolulu, HI, 07/10/27. https://doi.org/10.1109/NSSMIC.2007.4436365
Tanaka T, Arimoto M, Axelsson M, Björnsson CI, Bogaert G, Carlson P et al. Data acquisition system for the PoGOLite astronomical hard X-ray polarimeter. In IEEE Nuclear Science Symposium Conference Record. Vol. 1. 2007. p. 445-449. 4436365 https://doi.org/10.1109/NSSMIC.2007.4436365
Tanaka, T. ; Arimoto, M. ; Axelsson, M. ; Björnsson, C. I. ; Bogaert, G. ; Carlson, P. ; Cooney, M. ; Craig, W. ; Engdegård, O. ; Fukazawa, Y. ; Gunji, S. ; Hjalmarsdotter, L. ; Kamae, T. ; Kanai, Y. ; Kataoka, Jun ; Katsuta, J. ; Kawai, N. ; Kazejev, J. ; Kiss, M. ; Klamra, W. ; Larsson, S. ; Madejski, G. ; Bettolo, C. Marini ; Mizuno, T. ; Ng, J. ; Nomachi, M. ; Odaka, H. ; Pearce, M. ; Ruckman, L. ; Ryde, F. ; Tajima, H. ; Takahashi, H. ; Takahashi, T. ; Thurston, T. ; Ueno, M. ; Varner, G. ; Ylinen, T. ; Yoshida, H. ; Yuasa, T. / Data acquisition system for the PoGOLite astronomical hard X-ray polarimeter. IEEE Nuclear Science Symposium Conference Record. Vol. 1 2007. pp. 445-449
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abstract = "The PoGOLite is a new balloon-borne instrument to measure the polarization of hard X-rays / soft gamma-rays in the 25-80 keV energy range for the first time. In order to detect the polarization, PoGOLite measures the azimuthal angle asymmetry of Compton scattering and the subsequent photo-absorption in an array of detectors. This array consists of 217 well-type phoswich detector cells (PDCs) surrounded by a side anti-coincidence shield (SAS) composed of 54 segments of BGO crystals. At balloon altitude, the intensity of backgrounds due to cosmic-ray charged particles, atmospheric gamma-rays and neutrons is extremely high, typically a few hundred Hz per unit. Hence the data acquisition (DAQ) system of PoGOLite is required to handle more than 270 signals simultaneously, and detect weak signals from astrophysical objects (100mCrab, 1.5cs-1 in 25-80 keV ) under such a severe environment. We have developed a new DAQ system consisting of front-end electronics, waveform digitizer, Field Programmable Gate Array (FPGA) and a microprocessor. In this system, all output signals of PDC / SAS are fed into individual charge-sensitive amplifier and then digitized to 12 bit accuracy at 24MSa/s by pipelined analog to digital converters. A DAQ board for the PDC records waveforms which will be examined in an off-line analysis to distinguish signals from the background events and measure the energy spectrum and polarization of targets. A board for the SAS records hit pattern to be used for background rejection. It also continuously records a pulse-height analysis (PHA) histogram to monitor incident background flux. These basic functions of the DAQ system were verified in a series of beam tests.",
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AU - Tanaka, T.

AU - Arimoto, M.

AU - Axelsson, M.

AU - Björnsson, C. I.

AU - Bogaert, G.

AU - Carlson, P.

AU - Cooney, M.

AU - Craig, W.

AU - Engdegård, O.

AU - Fukazawa, Y.

AU - Gunji, S.

AU - Hjalmarsdotter, L.

AU - Kamae, T.

AU - Kanai, Y.

AU - Kataoka, Jun

AU - Katsuta, J.

AU - Kawai, N.

AU - Kazejev, J.

AU - Kiss, M.

AU - Klamra, W.

AU - Larsson, S.

AU - Madejski, G.

AU - Bettolo, C. Marini

AU - Mizuno, T.

AU - Ng, J.

AU - Nomachi, M.

AU - Odaka, H.

AU - Pearce, M.

AU - Ruckman, L.

AU - Ryde, F.

AU - Tajima, H.

AU - Takahashi, H.

AU - Takahashi, T.

AU - Thurston, T.

AU - Ueno, M.

AU - Varner, G.

AU - Ylinen, T.

AU - Yoshida, H.

AU - Yuasa, T.

PY - 2007

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N2 - The PoGOLite is a new balloon-borne instrument to measure the polarization of hard X-rays / soft gamma-rays in the 25-80 keV energy range for the first time. In order to detect the polarization, PoGOLite measures the azimuthal angle asymmetry of Compton scattering and the subsequent photo-absorption in an array of detectors. This array consists of 217 well-type phoswich detector cells (PDCs) surrounded by a side anti-coincidence shield (SAS) composed of 54 segments of BGO crystals. At balloon altitude, the intensity of backgrounds due to cosmic-ray charged particles, atmospheric gamma-rays and neutrons is extremely high, typically a few hundred Hz per unit. Hence the data acquisition (DAQ) system of PoGOLite is required to handle more than 270 signals simultaneously, and detect weak signals from astrophysical objects (100mCrab, 1.5cs-1 in 25-80 keV ) under such a severe environment. We have developed a new DAQ system consisting of front-end electronics, waveform digitizer, Field Programmable Gate Array (FPGA) and a microprocessor. In this system, all output signals of PDC / SAS are fed into individual charge-sensitive amplifier and then digitized to 12 bit accuracy at 24MSa/s by pipelined analog to digital converters. A DAQ board for the PDC records waveforms which will be examined in an off-line analysis to distinguish signals from the background events and measure the energy spectrum and polarization of targets. A board for the SAS records hit pattern to be used for background rejection. It also continuously records a pulse-height analysis (PHA) histogram to monitor incident background flux. These basic functions of the DAQ system were verified in a series of beam tests.

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