A multiwire proportional counter system for high energy astrophysicsResolution tests of multiwire proportional counter delay line readout systems are reported. The system is being developed at NASA/JSC for use in a large balloon borne magnet spectrometer. The system is ultimately intended for use in Space Shuttle missions. Tests of two different types of delay line and associated electronics carried out in minimum ionizing particle beams (accelerator and sea level cosmic ray) are reported. Resolution performance is shown to be strongly dependent on type of gas mixture and in the case of inclined events upon the propagation velocity of the delay line. The resolution performance achieved for magic gas chamber filling (100 um at normal incidence) is far superior to any other state of the art technique capable of being applied to large geometry factor systems.
Document ID
19740048455
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Lacy, J. L. (Houston, University Houston, Tex., United States)
Badhwar, G. D. (National Research Council Washington, D.C., United States)
Deney, C. L. (Lockheed Electronics Co., Inc. Plainfield, N.J., United States)
Golden, R. L. (NASA Headquarters Washington, DC United States)