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X-Ray Polarimetry Workshop SLAC, Stanford, California 9-11 February 2004 |
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A photoelectric polarimeter with an active-matrix pixel micropattern detector
Philip
Deines-Jones
Universities Space Research Association
pvd@lheapop.gsfc.nasa.gov
P. Deines-Jones, J.K. Black, S.E. Ready, R.A. Street
We have constructed a photoelectric X-ray polarimeter using Gas Electron Multipliers (GEMs) and an amorphous silicon active matrix readout. This detector is large enough to instrument the focal plane of an astronomical X-ray telescope. We have measured a modulation factor of 0.33+/-0.03 at 4.5 keV, confirming previous reports of the high polarization sensitivity of a finely segmented pixel proportional counter. We describe the polarimeter, its performance, and possible improvements.
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For more information, contact
Jennifer Formichelli |
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