Position-sensitive gas proportional chambers

Conference · Fri Dec 31 23:00:00 EST 1976

DOI:https://doi.org/10.1109/TNS.1978.4329293· OSTI ID:5374482

Morris, C L; Hoffmann, G W; Thiessen, H A

A number of multiwire, position-sensitive, gas proportional chambers have been constructed which use fast delay line (2.5 ns/cm) readouts to provide trajectory position and angle information for particles near the focal planes of the Energetic Pion Channel and Spectrometer (EPICS) and High Resolution Spectrometer (HRS) at the Clinton P. Anderson Meson Physics Facility (LAMPF). These chambers are two dimensional with anode wires in one direction and cathode wires in the other direction. When operated as ordinary delay line chambers, position resolution of 0.5 mm (FWHM) can be obtained in the cathode direction for short cathode wire lengths. If the drift information from the anodes is used, resolution of less than 0.35 mm (FWHM) can be obtained in this direction. The chambers can be operated at count rates of 5 x 10/sup 5/ pulses/sec with live times of greater than 90 percent. Efficiencies, measured at lower counting rates, are typically greater than 99 percent.

• Research Organization: Los Alamos Scientific Lab., N.Mex. (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5374482
• Report Number(s): LA-UR-77-2438; CONF-771023-2
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430303 -- Particle Accelerators-- Experimental Facilities & Equipment
440104* -- Radiation Instrumentation-- High Energy Physics Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ACCELERATOR FACILITIES
ACCELERATORS
COUNTING RATES
CYCLIC ACCELERATORS
DELAY CIRCUITS
DRIFT CHAMBERS
EFFICIENCY
ELECTRONIC CIRCUITS
LAMPF LINAC
LINEAR ACCELERATORS
MEASURING INSTRUMENTS
MESON FACTORIES
MULTIWIRE PROPORTIONAL CHAMBERS
OPERATION
PERFORMANCE
POSITION SENSITIVE DETECTORS
PROPORTIONAL COUNTERS
RADIATION DETECTORS
READOUT SYSTEMS
RESOLUTION
SPATIAL RESOLUTION