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

J. 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. Mitchell; E. 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

doi:10.1117/12.613621

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

J. 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

^*Corresponding author for this work

Science Institute

Research output: Contribution to journal › Conference article › peer-review

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 language	English
Article number	58980J
Pages (from-to)	1-11
Number of pages	11
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5898
DOIs	https://doi.org/10.1117/12.613621
Publication status	Published - 2005
Event	UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIV - San Diego, CA, United States Duration: 1 Aug 2005 → 3 Aug 2005

Other keywords

Balloon experiment
Polarimetry
Soft Gamma-rays

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10.1117/12.613621

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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., ... Kishimoto (2005). 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, 5898, 1-11. Article 58980J. https://doi.org/10.1117/12.613621

@article{4af9a8004d27447e9b34e6ec2ac89bef,

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

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.",

keywords = "Balloon experiment, Polarimetry, Soft Gamma-rays",

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

year = "2005",

doi = "10.1117/12.613621",

language = "English",

volume = "5898",

pages = "1--11",

journal = "Proceedings of SPIE - The International Society for Optical Engineering",

issn = "0277-786X",

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note = "UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIV ; Conference date: 01-08-2005 Through 03-08-2005",

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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', Proceedings of SPIE - The International Society for Optical Engineering, vol. 5898, 58980J, pp. 1-11. https://doi.org/10.1117/12.613621

TY - JOUR

T1 - Low energy response of a prototype detector array for the PoGO astronomical hard X-ray polarimeter

AU - Kataoka, J.

AU - Kanal, M.

AU - Arimoto, T.

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,

PY - 2005

Y1 - 2005

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.

AB - 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.

KW - Balloon experiment

KW - Polarimetry

KW - Soft Gamma-rays

UR - http://www.scopus.com/inward/record.url?scp=29344434925&partnerID=8YFLogxK

U2 - 10.1117/12.613621

DO - 10.1117/12.613621

M3 - Conference article

AN - SCOPUS:29344434925

SN - 0277-786X

VL - 5898

SP - 1

EP - 11

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

M1 - 58980J

T2 - UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIV

Y2 - 1 August 2005 through 3 August 2005

ER -

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

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