A high performance anticoincidence rejection system for balloon borne MWPC

Details A high performance anticoincidence rejection system for balloon borne MWPC A high performance anticoincidence rejection system for balloon borne MWPC

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989itns...36..921u&link_type=abstract

(IEEE, DOE, NIST, et al., 1988 Nuclear Science Symposium, Orlando, FL, Nov. 9-11, 1988) IEEE Transactions on Nuclear Science (IS

Computer Science

Performance

2

Balloon-Borne Instruments, Gamma Ray Astronomy, Proportional Counters, X Ray Astronomy, Flight Tests, Gas Detectors, Performance Tests, Supernova 1987A, Xenon

Scientific paper

The supernova SN 1987A has been observed in the range of hard X-rays (15-180 keV) and high-energy gamma-rays (50-500 MeV) with a payload launched from the balloon facility of Alice Springs (Australia) during April 1987 and 1988. The low-energy detector based on a MWPC had a sensitive area of 500 sq cm. In the second flight a complete plastic shield was added for the first time to the multiwire proportional counter (MWPC). By switching on the active shield, the background counting rate dropped from 4.2 to 2.8 x 10 to the -4 counts/sq cm-s-keV with no change in the deadtime of the counter. It is concluded that the use of a multitechnique rejection system for this kind of gaseous detector is advantages.

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