Low energy response of a prototype detector array for the PoGO astronomical hard X-ray polarimeter

Jun Kataoka, M. Kanal, T. Arimoto, T. Ikagawa, M. Saito, N. Ueno, R. Kawai, P. Blandford, T. Chen, G. Kamae, T. Madejski, J. Mizuno, H. Ng, T. Tajima, L. Thurston, A. Barbier, J. Harding, S. Krizmanic, J. Hunter, R. MitchellE. Streitmatter, R. Groth, D. Fernholtz, Y. Marlow, T. Saito, S. Takahashi, H. Gunji, Y. Sakurai, V. Fukazawa, P. Anderson, W. Carlson, M. Klamra, M. Pearce, S. Suhonen, F. Larsson, C. I. Ryde, G. Bjornsson, S. Bogaert, Kishimoto

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

3 Citations (Scopus)

Abstract

The Polarized Gamma-ray Observer (PoGO) is a new balloon-borne instrument designed to measure polarization from astrophysical objects in the 30-200 keV range. It is under development for the first flight anticipated in 2008. PoGO is designed to minimize the background by an improved phoswich configuration, which enables a detection of 10 % polarization in a 100 mCrab source in a 6-8 hour observation. To achieve such high sensitivity, low energy response of the detector is important because the source count rate is generally dominated by the lowest energy photons. We have developed new PMT assemblies specifically designed for PoGO to read-out weak scintillation light of one photoelectron (1 p.e.) level. A beam test of a prototype detector array was conducted at the KEK Photon Factory, Tsukuba in Japan. The experimental data confirm that PoGO can detect polarization of 80-85 % polarized beam down to 30 keV with a modulation factor 0.25 ± 0.05.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsO.H.W. Siegmund
Pages1-11
Number of pages11
Volume5898
DOIs
Publication statusPublished - 2005
Externally publishedYes
EventUV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIV - San Diego, CA, United States
Duration: 2005 Aug 12005 Aug 3

Other

OtherUV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIV
CountryUnited States
CitySan Diego, CA
Period05/8/105/8/3

Fingerprint

Polarimeters
polarimeters
Gamma rays
prototypes
gamma rays
Detectors
X rays
detectors
Polarization
x rays
polarization
balloon-borne instruments
Photons
energy
Balloons
photons
Scintillation
Photoelectrons
industrial plants
assemblies

Keywords

  • Balloon experiment
  • Polarimetry
  • Soft Gamma-rays

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Kataoka, J., Kanal, M., Arimoto, T., Ikagawa, T., Saito, M., Ueno, N., ... Kishimoto (2005). Low energy response of a prototype detector array for the PoGO astronomical hard X-ray polarimeter. In O. H. W. Siegmund (Ed.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 5898, pp. 1-11). [58980J] https://doi.org/10.1117/12.613621

Low energy response of a prototype detector array for the PoGO astronomical hard X-ray polarimeter. / Kataoka, Jun; Kanal, M.; Arimoto, T.; Ikagawa, T.; Saito, M.; Ueno, N.; Kawai, R.; Blandford, P.; Chen, T.; Kamae, G.; Madejski, T.; Mizuno, J.; Ng, H.; Tajima, T.; Thurston, L.; Barbier, A.; Harding, J.; Krizmanic, S.; Hunter, J.; Mitchell, R.; Streitmatter, E.; Groth, R.; Fernholtz, D.; Marlow, Y.; Saito, T.; Takahashi, S.; Gunji, H.; Sakurai, Y.; Fukazawa, V.; Anderson, P.; Carlson, W.; Klamra, M.; Pearce, M.; Suhonen, S.; Larsson, F.; Ryde, C. I.; Bjornsson, G.; Bogaert, S.; Kishimoto.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / O.H.W. Siegmund. Vol. 5898 2005. p. 1-11 58980J.

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

Kataoka, J, Kanal, M, Arimoto, T, Ikagawa, T, Saito, M, Ueno, N, Kawai, R, Blandford, P, Chen, T, Kamae, G, Madejski, T, Mizuno, J, Ng, H, Tajima, T, Thurston, L, Barbier, A, Harding, J, Krizmanic, S, Hunter, J, Mitchell, R, Streitmatter, E, Groth, R, Fernholtz, D, Marlow, Y, Saito, T, Takahashi, S, Gunji, H, Sakurai, Y, Fukazawa, V, Anderson, P, Carlson, W, Klamra, M, Pearce, M, Suhonen, S, Larsson, F, Ryde, CI, Bjornsson, G, Bogaert, S & Kishimoto 2005, Low energy response of a prototype detector array for the PoGO astronomical hard X-ray polarimeter. in OHW Siegmund (ed.), Proceedings of SPIE - The International Society for Optical Engineering. vol. 5898, 58980J, pp. 1-11, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIV, San Diego, CA, United States, 05/8/1. https://doi.org/10.1117/12.613621
Kataoka J, Kanal M, Arimoto T, Ikagawa T, Saito M, Ueno N et al. Low energy response of a prototype detector array for the PoGO astronomical hard X-ray polarimeter. In Siegmund OHW, editor, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 5898. 2005. p. 1-11. 58980J https://doi.org/10.1117/12.613621
Kataoka, Jun ; Kanal, M. ; Arimoto, T. ; Ikagawa, T. ; Saito, M. ; Ueno, N. ; Kawai, R. ; Blandford, P. ; Chen, T. ; Kamae, G. ; Madejski, T. ; Mizuno, J. ; Ng, H. ; Tajima, T. ; Thurston, L. ; Barbier, A. ; Harding, J. ; Krizmanic, S. ; Hunter, J. ; Mitchell, R. ; Streitmatter, E. ; Groth, R. ; Fernholtz, D. ; Marlow, Y. ; Saito, T. ; Takahashi, S. ; Gunji, H. ; Sakurai, Y. ; Fukazawa, V. ; Anderson, P. ; Carlson, W. ; Klamra, M. ; Pearce, M. ; Suhonen, S. ; Larsson, F. ; Ryde, C. I. ; Bjornsson, G. ; Bogaert, S. ; Kishimoto. / Low energy response of a prototype detector array for the PoGO astronomical hard X-ray polarimeter. Proceedings of SPIE - The International Society for Optical Engineering. editor / O.H.W. Siegmund. Vol. 5898 2005. pp. 1-11
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abstract = "The Polarized Gamma-ray Observer (PoGO) is a new balloon-borne instrument designed to measure polarization from astrophysical objects in the 30-200 keV range. It is under development for the first flight anticipated in 2008. PoGO is designed to minimize the background by an improved phoswich configuration, which enables a detection of 10 {\%} polarization in a 100 mCrab source in a 6-8 hour observation. To achieve such high sensitivity, low energy response of the detector is important because the source count rate is generally dominated by the lowest energy photons. We have developed new PMT assemblies specifically designed for PoGO to read-out weak scintillation light of one photoelectron (1 p.e.) level. A beam test of a prototype detector array was conducted at the KEK Photon Factory, Tsukuba in Japan. The experimental data confirm that PoGO can detect polarization of 80-85 {\%} polarized beam down to 30 keV with a modulation factor 0.25 ± 0.05.",
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AU - Ikagawa, T.

AU - Saito, M.

AU - Ueno, N.

AU - Kawai, R.

AU - Blandford, P.

AU - Chen, T.

AU - Kamae, G.

AU - Madejski, T.

AU - Mizuno, J.

AU - Ng, H.

AU - Tajima, T.

AU - Thurston, L.

AU - Barbier, A.

AU - Harding, J.

AU - Krizmanic, S.

AU - Hunter, J.

AU - Mitchell, R.

AU - Streitmatter, E.

AU - Groth, R.

AU - Fernholtz, D.

AU - Marlow, Y.

AU - Saito, T.

AU - Takahashi, S.

AU - Gunji, H.

AU - Sakurai, Y.

AU - Fukazawa, V.

AU - Anderson, P.

AU - Carlson, W.

AU - Klamra, M.

AU - Pearce, M.

AU - Suhonen, S.

AU - Larsson, F.

AU - Ryde, C. I.

AU - Bjornsson, G.

AU - Bogaert, S.

AU - Kishimoto,

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N2 - The Polarized Gamma-ray Observer (PoGO) is a new balloon-borne instrument designed to measure polarization from astrophysical objects in the 30-200 keV range. It is under development for the first flight anticipated in 2008. PoGO is designed to minimize the background by an improved phoswich configuration, which enables a detection of 10 % polarization in a 100 mCrab source in a 6-8 hour observation. To achieve such high sensitivity, low energy response of the detector is important because the source count rate is generally dominated by the lowest energy photons. We have developed new PMT assemblies specifically designed for PoGO to read-out weak scintillation light of one photoelectron (1 p.e.) level. A beam test of a prototype detector array was conducted at the KEK Photon Factory, Tsukuba in Japan. The experimental data confirm that PoGO can detect polarization of 80-85 % polarized beam down to 30 keV with a modulation factor 0.25 ± 0.05.

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