An Optimized Collimator Scheme of HXMT

JIN Ying-Kang; WU Mei; JIN Yong-Jie; ZHUANG Ren-Lin

Chinese Physics C> 2007, Vol. 31> Issue(7) : 612-616

An Optimized Collimator Scheme of HXMT

Department of Engineering Physics and Center for Astrophysics, Tsinghua University, Beijing 100084, China2 Institute of High Energy Physics, CAS, Beijing 100049, China

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Abstract：
The performance of the Hard X-ray Modulation Telescope (HXMT) is significantly influenced by the collecting area. Based on the simulations of the background and the point spread function of the instrument, we propose a new collimator scheme in which the weight of the whole detectors can be decreased about 80kg. This is equal to the weight of 5 or more new detectors. We hope this new scheme will help to increase the number of detectors under the total loading mass limit, so that the collecting area will be larger and the performance of HXMT will be better.

References

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. LI T P, ZHANG S N, LU F J. Chinese Journal of Space Science, 2006, 26(Supplement): 302. LI T P, WU M. APSS, 1993, 206: 913. Agostinellis, Allison J, Amako K et al. Nucl. Instrum.Methods, 2003, A506: 250-3034. Dean A J, Bird A J, Diallo N et al. Space Science Reviews,2003, 105: 285-3765. Peter K F Grieder. Cosmic Rays at Earth. Amsterdam:Elsevier Science, 2001

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JIN Ying-Kang, WU Mei, JIN Yong-Jie and ZHUANG Ren-Lin. An Optimized Collimator Scheme of HXMT[J]. Chinese Physics C, 2007, 31(7): 612-616.

JIN Ying-Kang, WU Mei, JIN Yong-Jie and ZHUANG Ren-Lin. An Optimized Collimator Scheme of HXMT[J]. Chinese Physics C, 2007, 31(7): 612-616. shu

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Received: 2006-11-02
Revised: 2006-12-01

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