HARPO, prototype of a gamma-ray polarimeter: Results of a polarised photon beam test between 1.7 and 74 MeV

David Attié; S. Amano; P. Baron; D. Bauduin; D. Bernard; P. Bruel; D. Calvet; P. Colas; S. Daté; A. Delbart; M. Frotin; Y. Geerebaert; B. Giebels; D. Götz; P. Gros; S. Hashimoto; D. Horan; T. Kotaka; M. Louzir; F. Magniette; Y. Minamiyama; S. Miyamoto; H. Ohkuma; P. Poilleux; I. Semeniouk; P. Sizun; A. Takemoto; M. Yamaguchi; R. Yonamine; S. Wang

HARPO, prototype of a gamma-ray polarimeter: Results of a polarised photon beam test between 1.7 and 74 MeV

David Attié
, S. Amano
, P. Baron
, D. Bauduin
, D. Bernard
, P. Bruel
, D. Calvet
, P. Colas
, S. Daté
, A. Delbart
, M. Frotin
, Y. Geerebaert
, B. Giebels
, D. Götz
, P. Gros
, S. Hashimoto
, D. Horan
, T. Kotaka
, M. Louzir
, F. Magniette

Y. Minamiyama, S. Miyamoto, H. Ohkuma, P. Poilleux, I. Semeniouk, P. Sizun, A. Takemoto, M. Yamaguchi, R. Yonamine, S. Wang

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

Abstract

Access to the photon polarisation in the 1-100 MeV energy range is a challenge for the next generation of space telescopes. The current telescopes in space are almost blind in this energy range, mainly due to the degradation of the angular resolution of e+e-pair and due to elastic scattering in the matter. Pair-conversion detector technologies as gaseous detectors are a promising alternative to the technologies based on tungsten-converter/thin-sensitive-layer stacks such as COS-B/EGRET/Fermi-LAT, firstly to improve the single-photon angular resolution and secondly for the polarisation information. The use of a time projection chamber (TPC) as a target and a tracking detector will improve by up to one order of magnitude the single-photon angular resolution (0.5°@100 MeV) with respect to the Fermi-LAT (5°@100 MeV), and by up to a factor of three with respect to what can be expected for silicon detectors (1.0-1.5°@100 MeV). With such a good angular resolution, a TPC can close the sensitivity gap at the level of 10^-6 MeV/cm².s) between 3 and 300 MeV despite having e lower sensitive mass. Furthermore, this good single-track angular resolution allows us to measure the linear polarisation fraction. The HARPO (Hermetic ARgon POlarimeter) detector prototype that we built is a high pressure (0.5-4 bar) low pile-up and low-diffusion gas detector. We will present the results of its high-statistics characterisation in the 1.7-74 MeV fully-polarised and non-polarised gamma-ray beam provided by the BL01 line at NewSUBARU. The excellent value of the polarisation asymmetry dilution factor that we measured opens the possibility of having a polarimeter in space working in the MeV-GeV energy range. In conclusion, we will present the design of a balloon-flight prototype ST3G (Self-Triggered Time projection chamber as a Gamma-ray Telescope) which is being developed. We will discuss its expected performance.

Original language	English
Journal	Proceedings of Science
Publication status	Published - 1 Jan 2017
Event	35th International Cosmic Ray Conference, ICRC 2017 - Bexco, Busan, Korea, Republic of Duration: 10 Jul 2017 → 20 Jul 2017

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Attié, D., Amano, S., Baron, P., Bauduin, D., Bernard, D., Bruel, P., Calvet, D., Colas, P., Daté, S., Delbart, A., Frotin, M., Geerebaert, Y., Giebels, B., Götz, D., Gros, P., Hashimoto, S., Horan, D., Kotaka, T., Louzir, M., ... Wang, S. (2017). HARPO, prototype of a gamma-ray polarimeter: Results of a polarised photon beam test between 1.7 and 74 MeV. Proceedings of Science.

@article{d38face8029446849f8944767c3cb733,

title = "HARPO, prototype of a gamma-ray polarimeter: Results of a polarised photon beam test between 1.7 and 74 MeV",

abstract = "Access to the photon polarisation in the 1-100 MeV energy range is a challenge for the next generation of space telescopes. The current telescopes in space are almost blind in this energy range, mainly due to the degradation of the angular resolution of e+e-pair and due to elastic scattering in the matter. Pair-conversion detector technologies as gaseous detectors are a promising alternative to the technologies based on tungsten-converter/thin-sensitive-layer stacks such as COS-B/EGRET/Fermi-LAT, firstly to improve the single-photon angular resolution and secondly for the polarisation information. The use of a time projection chamber (TPC) as a target and a tracking detector will improve by up to one order of magnitude the single-photon angular resolution (0.5°@100 MeV) with respect to the Fermi-LAT (5°@100 MeV), and by up to a factor of three with respect to what can be expected for silicon detectors (1.0-1.5°@100 MeV). With such a good angular resolution, a TPC can close the sensitivity gap at the level of 10-6 MeV/cm2.s) between 3 and 300 MeV despite having e lower sensitive mass. Furthermore, this good single-track angular resolution allows us to measure the linear polarisation fraction. The HARPO (Hermetic ARgon POlarimeter) detector prototype that we built is a high pressure (0.5-4 bar) low pile-up and low-diffusion gas detector. We will present the results of its high-statistics characterisation in the 1.7-74 MeV fully-polarised and non-polarised gamma-ray beam provided by the BL01 line at NewSUBARU. The excellent value of the polarisation asymmetry dilution factor that we measured opens the possibility of having a polarimeter in space working in the MeV-GeV energy range. In conclusion, we will present the design of a balloon-flight prototype ST3G (Self-Triggered Time projection chamber as a Gamma-ray Telescope) which is being developed. We will discuss its expected performance.",

author = "David Atti{\'e} and S. Amano and P. Baron and D. Bauduin and D. Bernard and P. Bruel and D. Calvet and P. Colas and S. Dat{\'e} and A. Delbart and M. Frotin and Y. Geerebaert and B. Giebels and D. G{\"o}tz and P. Gros and S. Hashimoto and D. Horan and T. Kotaka and M. Louzir and F. Magniette and Y. Minamiyama and S. Miyamoto and H. Ohkuma and P. Poilleux and I. Semeniouk and P. Sizun and A. Takemoto and M. Yamaguchi and R. Yonamine and S. Wang",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s) under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives 4.0 International License (CC BY-NC-ND 4.0).; 35th International Cosmic Ray Conference, ICRC 2017 ; Conference date: 10-07-2017 Through 20-07-2017",

year = "2017",

month = jan,

day = "1",

language = "English",

journal = "Proceedings of Science",

issn = "1824-8039",

}

Attié, D, Amano, S, Baron, P, Bauduin, D, Bernard, D , Bruel, P, Calvet, D, Colas, P, Daté, S, Delbart, A, Frotin, M, Geerebaert, Y, Giebels, B, Götz, D, Gros, P, Hashimoto, S, Horan, D, Kotaka, T, Louzir, M, Magniette, F, Minamiyama, Y, Miyamoto, S, Ohkuma, H, Poilleux, P, Semeniouk, I, Sizun, P, Takemoto, A, Yamaguchi, M, Yonamine, R & Wang, S 2017, 'HARPO, prototype of a gamma-ray polarimeter: Results of a polarised photon beam test between 1.7 and 74 MeV', Proceedings of Science.

TY - JOUR

T1 - HARPO, prototype of a gamma-ray polarimeter

T2 - 35th International Cosmic Ray Conference, ICRC 2017

AU - Attié, David

AU - Amano, S.

AU - Baron, P.

AU - Bauduin, D.

AU - Bernard, D.

AU - Bruel, P.

AU - Calvet, D.

AU - Colas, P.

AU - Daté, S.

AU - Delbart, A.

AU - Frotin, M.

AU - Geerebaert, Y.

AU - Giebels, B.

AU - Götz, D.

AU - Gros, P.

AU - Hashimoto, S.

AU - Horan, D.

AU - Kotaka, T.

AU - Louzir, M.

AU - Magniette, F.

AU - Minamiyama, Y.

AU - Miyamoto, S.

AU - Ohkuma, H.

AU - Poilleux, P.

AU - Semeniouk, I.

AU - Sizun, P.

AU - Takemoto, A.

AU - Yamaguchi, M.

AU - Yonamine, R.

AU - Wang, S.

N1 - Publisher Copyright: © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives 4.0 International License (CC BY-NC-ND 4.0).

PY - 2017/1/1

Y1 - 2017/1/1

N2 - Access to the photon polarisation in the 1-100 MeV energy range is a challenge for the next generation of space telescopes. The current telescopes in space are almost blind in this energy range, mainly due to the degradation of the angular resolution of e+e-pair and due to elastic scattering in the matter. Pair-conversion detector technologies as gaseous detectors are a promising alternative to the technologies based on tungsten-converter/thin-sensitive-layer stacks such as COS-B/EGRET/Fermi-LAT, firstly to improve the single-photon angular resolution and secondly for the polarisation information. The use of a time projection chamber (TPC) as a target and a tracking detector will improve by up to one order of magnitude the single-photon angular resolution (0.5°@100 MeV) with respect to the Fermi-LAT (5°@100 MeV), and by up to a factor of three with respect to what can be expected for silicon detectors (1.0-1.5°@100 MeV). With such a good angular resolution, a TPC can close the sensitivity gap at the level of 10-6 MeV/cm2.s) between 3 and 300 MeV despite having e lower sensitive mass. Furthermore, this good single-track angular resolution allows us to measure the linear polarisation fraction. The HARPO (Hermetic ARgon POlarimeter) detector prototype that we built is a high pressure (0.5-4 bar) low pile-up and low-diffusion gas detector. We will present the results of its high-statistics characterisation in the 1.7-74 MeV fully-polarised and non-polarised gamma-ray beam provided by the BL01 line at NewSUBARU. The excellent value of the polarisation asymmetry dilution factor that we measured opens the possibility of having a polarimeter in space working in the MeV-GeV energy range. In conclusion, we will present the design of a balloon-flight prototype ST3G (Self-Triggered Time projection chamber as a Gamma-ray Telescope) which is being developed. We will discuss its expected performance.

AB - Access to the photon polarisation in the 1-100 MeV energy range is a challenge for the next generation of space telescopes. The current telescopes in space are almost blind in this energy range, mainly due to the degradation of the angular resolution of e+e-pair and due to elastic scattering in the matter. Pair-conversion detector technologies as gaseous detectors are a promising alternative to the technologies based on tungsten-converter/thin-sensitive-layer stacks such as COS-B/EGRET/Fermi-LAT, firstly to improve the single-photon angular resolution and secondly for the polarisation information. The use of a time projection chamber (TPC) as a target and a tracking detector will improve by up to one order of magnitude the single-photon angular resolution (0.5°@100 MeV) with respect to the Fermi-LAT (5°@100 MeV), and by up to a factor of three with respect to what can be expected for silicon detectors (1.0-1.5°@100 MeV). With such a good angular resolution, a TPC can close the sensitivity gap at the level of 10-6 MeV/cm2.s) between 3 and 300 MeV despite having e lower sensitive mass. Furthermore, this good single-track angular resolution allows us to measure the linear polarisation fraction. The HARPO (Hermetic ARgon POlarimeter) detector prototype that we built is a high pressure (0.5-4 bar) low pile-up and low-diffusion gas detector. We will present the results of its high-statistics characterisation in the 1.7-74 MeV fully-polarised and non-polarised gamma-ray beam provided by the BL01 line at NewSUBARU. The excellent value of the polarisation asymmetry dilution factor that we measured opens the possibility of having a polarimeter in space working in the MeV-GeV energy range. In conclusion, we will present the design of a balloon-flight prototype ST3G (Self-Triggered Time projection chamber as a Gamma-ray Telescope) which is being developed. We will discuss its expected performance.

M3 - Conference article

AN - SCOPUS:85046058262

SN - 1824-8039

JO - Proceedings of Science

JF - Proceedings of Science

Y2 - 10 July 2017 through 20 July 2017

ER -

HARPO, prototype of a gamma-ray polarimeter: Results of a polarised photon beam test between 1.7 and 74 MeV

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