Prototype results of a high resolution vertex drift chamber for the Mark II SLC Upgrade detector

Conference · Sat Feb 01 04:00:00 EST 1986

OSTI ID:6005547

Alexander, J; Hayes, K; Hoard, C; Hutchinson, D; Jaros, J; Odaka, S; Ong, R; Drell, P; Fuzesy, R; Harr, R

Test results from a full-length prototype of the drift chamber vertex detector for the Mark II SLC Upgrade detector are presented. The 22 cell jet chamber employs planes of grid wires above and below the sense wire plane to increase the electrostatic stability of the sense wires and to narrow the electron arrival time distribution. Two different grid designs have been investigated. The spatial resolution and pulse widths have been measured at a variety of operating points and for different timing schemes in a mixture of 92% CO/sub 2/ and 8% isobutane. Typical results at 3 atmospheres pressure give an average resolution over a 2 cm drift distance of 30 ..mu..m for both designs. Efficient double track detection is achieved for tracks separated by 500 ..mu..m for one design and by 1000 ..mu..m for the other.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (USA); Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: AC03-76SF00515; AC03-76SF00098
• OSTI ID: 6005547
• Report Number(s): SLAC-PUB-3889; CONF-860272-2; LBL-21158; ON: DE86008586
• Country of Publication: United States
• Language: English

Related Subjects

440104* -- Radiation Instrumentation-- High Energy Physics Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
DRIFT CHAMBERS
EFFICIENCY
ELECTRONIC CIRCUITS
MEASURING INSTRUMENTS
MULTIWIRE PROPORTIONAL CHAMBERS
PARTICLE TRACKS
PERFORMANCE TESTING
PROPORTIONAL COUNTERS
PULSE CIRCUITS
PULSE SHAPERS
RADIATION DETECTORS
RESOLUTION
SIGNAL CONDITIONERS
SPATIAL RESOLUTION
TESTING