Development of cosmic x-ray polarimeter
Creators
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1.
Tokyo University of Science
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2.
RIKEN
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3.
Yamagata University
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4.
University of Tokyo
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5.
Independent Administrative Institution National Research Institute for Cultural Properties
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6.
California Institute of Technology
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7.
Nagoya University
Contributors
Abstract
We present a performance study of a cosmic X-ray polarimeter which is based on the photoelectric effect in gas, and sensitive to a few to 30 keV range. In our polarimeter, the key device would be the 50 μm pitch Gas Electron Multiplier (GEM). We have evaluated the modulation factor using highly polarized X-ray, provided by a synchrotron accelerator. In the analysis, we selected events by the eccentricity of the charge cloud of the photoelectron track. As a result, we obtained the relationship between the selection criteria for the eccentricity and the modulation factors; for example, when we selected the events which have their eccentricity of > 0.95, the polarimeter exhibited with the modulation factor of 0.32. In addition, we estimated the Minimum Detectable Polarization degree (MDP) of Crab Nebula with our polarimeter and found 10 ksec observation is enough to detect the polarization, if we adopt suitable X-ray mirrors.
Additional Information
© 2006 SPIE.Attached Files
Published - 62663X.pdf
Files
62663X.pdf
Additional details
Identifiers
- Eprint ID
- 84191
- Resolver ID
- CaltechAUTHORS:20180109-111622013
Dates
- Created
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2018-01-09Created from EPrint's datestamp field
- Updated
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2021-11-15Created from EPrint's last_modified field
Caltech Custom Metadata
- Caltech groups
- Space Radiation Laboratory
- Series Name
- Proceedings of SPIE
- Series Volume or Issue Number
- 6266