Pad TPC

Conference · Sun Jan 01 00:00:00 EST 1984 · AIP Conf. Proc.; (United States)

OSTI ID:5419360

Hilke, H J

A new kind of TPC is described, in which no sense wires exist but gas amplification is obtained from a single parallel gap. A mesh separates the drift volume from the amplifying gap. The anode is segmented into circular rows of narrow pads for rphi measurement by centroid finding and into wide circular pads for dE/dx sampling. The expected advantages of this technique are: better, track angle independent rphi resolution (no need for wire pulse height corrections); better two-track separation if more electronic channels can be afforded; less dead space from frame structures; reduced positive feedback and slower chamber deterioration by deposit formation on the anode. Very tight construction tolerances are the principle drawback. The properties of the Pad TPC are discussed in view of large scale construction and first test results are presented.

• Research Organization: CERN, Geneva, Switzerland
• OSTI ID: 5419360
• Report Number(s): CONF-8306139-; TRN: 85-018039
• Journal Information: AIP Conf. Proc.; (United States), Vol. 108; Conference: Time projection chamber workshop, Vancouver, Canada, 23 Jun 1983
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
DRIFT CHAMBERS
DESIGN
PERFORMANCE
ANODES
ENERGY LOSSES
LIFETIME
PARTICLE IDENTIFICATION
PARTICLE TRACKS
RESOLUTION
SPATIAL RESOLUTION
ELECTRODES
LOSSES
MEASURING INSTRUMENTS
MULTIWIRE PROPORTIONAL CHAMBERS
PROPORTIONAL COUNTERS
RADIATION DETECTORS
440101* - Radiation Instrumentation- General Detectors or Monitors & Radiometric Instruments