Polarization measurements with the MEGA telescope

Andreas Zoglauer; R. Andritschke; G. Kanbach; P. F. Bloser; V. N. Litvinenko

Polarization measurements with the MEGA telescope

Andreas Zoglauer
, R. Andritschke
, G. Kanbach
, P. F. Bloser
, V. N. Litvinenko

Physics and Astronomy

Stony Brook University

Max Planck Institute for Extraterrestrial Physics
NASA Goddard Space Flight Center

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

3 Scopus citations

Abstract

The tracking Medium Energy Gamma-ray Astronomy telescope MEGA, which detects gamma-rays via Compton scattering and pair creation, has been calibrated at the High Intensity Gamma Source of the Free Electron Laser facility at Duke University. Exposures to monoenergetic (range 710 keV to 50 MeV, dE/E < 2%), 100% linearly polarized pencil beams allow the derivation of the imaging and spectral properties, sensitivity and field of view of this prototype instrument. Since the gamma-ray test beam is generated by Compton back-scattering inside a free electron laser, the degree and angle of polarization are completely determined. We describe the measured response of MEGA to these polarized photons in the range below about 5 MeV, where Compton scattering is the dominant detection process.

Original language	English
Pages (from-to)	921-924
Number of pages	4
Journal	European Space Agency, (Special Publication) ESA SP
Issue number	552
State	Published - 2004
Event	5th INTEGRAL Workshop on The INTEGRAL Universe - Munich, Germany Duration: Feb 16 2004 → Feb 20 2004

Keywords

Compton telescope
Gamma-ray astronomy
Polarization

Cite this

@article{0ee14a3dd9b74fa6b06829d7412f0431,

title = "Polarization measurements with the MEGA telescope",

abstract = "The tracking Medium Energy Gamma-ray Astronomy telescope MEGA, which detects gamma-rays via Compton scattering and pair creation, has been calibrated at the High Intensity Gamma Source of the Free Electron Laser facility at Duke University. Exposures to monoenergetic (range 710 keV to 50 MeV, dE/E < 2\%), 100\% linearly polarized pencil beams allow the derivation of the imaging and spectral properties, sensitivity and field of view of this prototype instrument. Since the gamma-ray test beam is generated by Compton back-scattering inside a free electron laser, the degree and angle of polarization are completely determined. We describe the measured response of MEGA to these polarized photons in the range below about 5 MeV, where Compton scattering is the dominant detection process.",

keywords = "Compton telescope, Gamma-ray astronomy, Polarization",

author = "Andreas Zoglauer and R. Andritschke and G. Kanbach and Bloser, \{P. F.\} and Litvinenko, \{V. N.\}",

year = "2004",

language = "English",

pages = "921--924",

journal = "European Space Agency, (Special Publication) ESA SP",

issn = "0379-6566",

publisher = "European Space Agency",

number = "552",

note = "5th INTEGRAL Workshop on The INTEGRAL Universe ; Conference date: 16-02-2004 Through 20-02-2004",

}

TY - JOUR

T1 - Polarization measurements with the MEGA telescope

AU - Zoglauer, Andreas

AU - Andritschke, R.

AU - Kanbach, G.

AU - Bloser, P. F.

AU - Litvinenko, V. N.

PY - 2004

Y1 - 2004

N2 - The tracking Medium Energy Gamma-ray Astronomy telescope MEGA, which detects gamma-rays via Compton scattering and pair creation, has been calibrated at the High Intensity Gamma Source of the Free Electron Laser facility at Duke University. Exposures to monoenergetic (range 710 keV to 50 MeV, dE/E < 2%), 100% linearly polarized pencil beams allow the derivation of the imaging and spectral properties, sensitivity and field of view of this prototype instrument. Since the gamma-ray test beam is generated by Compton back-scattering inside a free electron laser, the degree and angle of polarization are completely determined. We describe the measured response of MEGA to these polarized photons in the range below about 5 MeV, where Compton scattering is the dominant detection process.

AB - The tracking Medium Energy Gamma-ray Astronomy telescope MEGA, which detects gamma-rays via Compton scattering and pair creation, has been calibrated at the High Intensity Gamma Source of the Free Electron Laser facility at Duke University. Exposures to monoenergetic (range 710 keV to 50 MeV, dE/E < 2%), 100% linearly polarized pencil beams allow the derivation of the imaging and spectral properties, sensitivity and field of view of this prototype instrument. Since the gamma-ray test beam is generated by Compton back-scattering inside a free electron laser, the degree and angle of polarization are completely determined. We describe the measured response of MEGA to these polarized photons in the range below about 5 MeV, where Compton scattering is the dominant detection process.

KW - Compton telescope

KW - Gamma-ray astronomy

KW - Polarization

UR - https://www.scopus.com/pages/publications/23844551759

M3 - Conference article

SN - 0379-6566

SP - 921

EP - 924

JO - European Space Agency, (Special Publication) ESA SP

JF - European Space Agency, (Special Publication) ESA SP

IS - 552

T2 - 5th INTEGRAL Workshop on The INTEGRAL Universe

Y2 - 16 February 2004 through 20 February 2004

ER -

Polarization measurements with the MEGA telescope

Abstract

Keywords

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