Multiwire proportional chamber development. Final report, 1 November 1970- -31 December 1972

Technical Report · Mon Jan 01 04:00:00 EST 1973

OSTI ID:4388032

Doolittle, R F; Pollvogt, U; Eskovitz, A J

The development of large area multiwire proportional chambers, to be used as high resolution spatial detectors in cosmic ray experiments is described. A readout system was developed which uses a directly coupled, lumped element delay-line whose characteristics are independent of the MWPC design. A complete analysis of the delay-line and the readout electronic system shows that a spatial resolution of about 0.1 mm can be reached with the MWPC operating in the strictly proportional region. This was confirmed by measurements with a small MWPC and / sup 55/Fe x-rays. A simplified analysis was carried out to estimate the theoretical limit of spatial resolution due to delta-rays, spread of the discharge along the anode wire, and inclined trajectories. To calculate the gas gain of MWPC' s of different geometrical configurations a method was developed which is based on the knowledge of the first Townsend coefficient of the chamber gas. (auth)

• Research Organization: TRW Systems Group, Redondo Beach, Calif. (USA)
• NSA Number: NSA-29-005234
• OSTI ID: 4388032
• Report Number(s): N--73-22210; NASA-CR--128899
• Country of Publication: United States
• Language: English

Related Subjects

*COSMIC RAY DETECTION-- MULTIWIRE PROPORTIONAL CHAMBERS
*MULTIWIRE PROPORTIONAL CHAMBERS-- PERFORMANCE
GAIN
N46140* --Instrumentation--Radiation Detection Instruments-- High Energy Physics Instrumentation
READOUT SYSTEMS
SPATIAL RESOLUTION