Abstract
Operation of the time projection chamber of the ALEPH experiment at LEP requires a high-purity argon/methane gas mixture supplied to the detector under stable conditions to ensure minimum signal attenuation throughout the 43 m3 detector volume (max. 2.2 m drift length) and maintain near-constant electron drift velocity in the gas over extended periods of time. Design considerations for a gas system to fulfil these conditions are presented and details given of the construction, operational aspects and of the achieved performance.
Original language | English (US) |
---|---|
Pages (from-to) | 176-184 |
Number of pages | 9 |
Journal | Nuclear Inst. and Methods in Physics Research, A |
Volume | 289 |
Issue number | 1-2 |
DOIs | |
State | Published - Apr 1 1990 |
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Instrumentation