TY - JOUR
T1 - Gated time projection chamber
AU - Némethy, Peter
AU - Oddone, Piermaria J.
AU - Toge, Nobukazu
AU - Ishibashi, Akira
N1 - Funding Information:
Operating the TPC in a gated mode offers a fundamental solution to the positive ion problem [2,3]. A gating grid placed between the drift and proportional multiplication regions is normally kept opaque so that electrons do not reach the sense wires. No ions are generated or collected during this "gate closed" time. When an external pretrigger signals a potentially interesting event, the gating grid is pulsed to become transparent for the time that it takes for the electrons of the event to reach the sense wires. The positive ion flux reaching the drift volume can be reduced by several orders of magnitude in such a scheme. While the TPC * This work was supported by the U.S. Department of Energy Contract DE-AC03-76SF00098 and by the Joint Japan U.S. Collaboration in High Energy Physics.
PY - 1983/7/1
Y1 - 1983/7/1
N2 - We describe test results on the operation of a gated time projection chamber. Symmetric pulses of ±120 V, applied to alternate wires of a gating grid, turn the detector from an insensitive state to a sensitive state without impairing the readout of the chamber for more than 2.5 μs.
AB - We describe test results on the operation of a gated time projection chamber. Symmetric pulses of ±120 V, applied to alternate wires of a gating grid, turn the detector from an insensitive state to a sensitive state without impairing the readout of the chamber for more than 2.5 μs.
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U2 - 10.1016/0167-5087(83)90702-0
DO - 10.1016/0167-5087(83)90702-0
M3 - Article
AN - SCOPUS:0142213358
SN - 0167-5087
VL - 212
SP - 273
EP - 280
JO - Nuclear Instruments and Methods In Physics Research
JF - Nuclear Instruments and Methods In Physics Research
IS - 1-3
ER -