Study of straw chamber lifetime with argon ethane

J. Adler; T. Bolton; K. Bunnell; E. Cheu; C. Grab; G. Mazaheri; A. Odian; D. Pitman; W. Stockhausen; W. Toki; W. Wadley; C. Wood; R. Mir

doi:10.1016/0168-9002(89)91439-3

Study of straw chamber lifetime with argon ethane

J. Adler, T. Bolton, K. Bunnell, E. Cheu, C. Grab, G. Mazaheri, A. Odian, D. Pitman, W. Stockhausen, W. Toki, W. Wadley, C. Wood, R. Mir

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

We present detailed laboratory measurements of the lifetime of a small test chamber, simulating the Mark III straw vertex chamber conditions. The tests were carried out with an argon-ethane 50 50 gas mixture at 3 atm absolute pressure and 3.9 kV applied to the wires. After the accumulation of ∼ 0.02 C/cm on a single straw, continuous discharges began. The addition of alcohol or water vapor to the gas mixture was found to extend the lifetime of the straws. Continuous flow of the gas mixture with water vapor through the straws prolonged the lifetime significantly. We present results on the effects of changing the gas mixture inside the straws at regular time intervals. Adding a small percentage of water vapor to the argon-ethane gas and flowing the gas mixture in the straws can improve the lifetime by more than an order of magnitude. An accumulated charge of 1.0 C/cm on a single straw has been obtained.

Original language	English (US)
Pages (from-to)	679-681
Number of pages	3
Journal	Nuclear Inst. and Methods in Physics Research, A
Volume	283
Issue number	3
DOIs	https://doi.org/10.1016/0168-9002(89)91439-3
State	Published - Nov 10 1989
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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10.1016/0168-9002(89)91439-3

Cite this

@article{c3b108a9ee7546b3a6401efba221ea5b,

title = "Study of straw chamber lifetime with argon ethane",

abstract = "We present detailed laboratory measurements of the lifetime of a small test chamber, simulating the Mark III straw vertex chamber conditions. The tests were carried out with an argon-ethane 50 50 gas mixture at 3 atm absolute pressure and 3.9 kV applied to the wires. After the accumulation of ∼ 0.02 C/cm on a single straw, continuous discharges began. The addition of alcohol or water vapor to the gas mixture was found to extend the lifetime of the straws. Continuous flow of the gas mixture with water vapor through the straws prolonged the lifetime significantly. We present results on the effects of changing the gas mixture inside the straws at regular time intervals. Adding a small percentage of water vapor to the argon-ethane gas and flowing the gas mixture in the straws can improve the lifetime by more than an order of magnitude. An accumulated charge of 1.0 C/cm on a single straw has been obtained.",

author = "J. Adler and T. Bolton and K. Bunnell and E. Cheu and C. Grab and G. Mazaheri and A. Odian and D. Pitman and W. Stockhausen and W. Toki and W. Wadley and C. Wood and R. Mir",

note = "Funding Information: We have measured the lifetime of a prototype straw chamber under various operating conditions . The test apparatus (fig . 1) consists of four straws in a pressurized vessel. The straws are 12 cm long, 0.8 cm in diameter, and are constructed of aluminized Mylar. A gold-plated tungsten sense wire is centered in each straw. The wire is 50 win in diameter and is tensioned to 275 g. The raw * Work supported in part by the US Department of Energy, under contract DE-AC03-76SF00515, and by the National Science Foundation . * * Present address: Cornell University, Ithaca, NY 14853, USA Present address: CERN. EP, 1211 Geneva 23, Switzerland. Present address: Bayer AG, Leverkusen. D-5090 Bayer-werk, FRG. Present address: University of Wyoming, Laramie, WY 82070, USA. Representing the collaboration.",

year = "1989",

month = nov,

day = "10",

doi = "10.1016/0168-9002(89)91439-3",

language = "English (US)",

volume = "283",

pages = "679--681",

journal = "Nuclear Inst. and Methods in Physics Research, A",

issn = "0168-9002",

publisher = "Elsevier B.V.",

number = "3",

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TY - JOUR

T1 - Study of straw chamber lifetime with argon ethane

AU - Adler, J.

AU - Bolton, T.

AU - Bunnell, K.

AU - Cheu, E.

AU - Grab, C.

AU - Mazaheri, G.

AU - Odian, A.

AU - Pitman, D.

AU - Stockhausen, W.

AU - Toki, W.

AU - Wadley, W.

AU - Wood, C.

AU - Mir, R.

N1 - Funding Information: We have measured the lifetime of a prototype straw chamber under various operating conditions . The test apparatus (fig . 1) consists of four straws in a pressurized vessel. The straws are 12 cm long, 0.8 cm in diameter, and are constructed of aluminized Mylar. A gold-plated tungsten sense wire is centered in each straw. The wire is 50 win in diameter and is tensioned to 275 g. The raw * Work supported in part by the US Department of Energy, under contract DE-AC03-76SF00515, and by the National Science Foundation . * * Present address: Cornell University, Ithaca, NY 14853, USA Present address: CERN. EP, 1211 Geneva 23, Switzerland. Present address: Bayer AG, Leverkusen. D-5090 Bayer-werk, FRG. Present address: University of Wyoming, Laramie, WY 82070, USA. Representing the collaboration.

PY - 1989/11/10

Y1 - 1989/11/10

N2 - We present detailed laboratory measurements of the lifetime of a small test chamber, simulating the Mark III straw vertex chamber conditions. The tests were carried out with an argon-ethane 50 50 gas mixture at 3 atm absolute pressure and 3.9 kV applied to the wires. After the accumulation of ∼ 0.02 C/cm on a single straw, continuous discharges began. The addition of alcohol or water vapor to the gas mixture was found to extend the lifetime of the straws. Continuous flow of the gas mixture with water vapor through the straws prolonged the lifetime significantly. We present results on the effects of changing the gas mixture inside the straws at regular time intervals. Adding a small percentage of water vapor to the argon-ethane gas and flowing the gas mixture in the straws can improve the lifetime by more than an order of magnitude. An accumulated charge of 1.0 C/cm on a single straw has been obtained.

AB - We present detailed laboratory measurements of the lifetime of a small test chamber, simulating the Mark III straw vertex chamber conditions. The tests were carried out with an argon-ethane 50 50 gas mixture at 3 atm absolute pressure and 3.9 kV applied to the wires. After the accumulation of ∼ 0.02 C/cm on a single straw, continuous discharges began. The addition of alcohol or water vapor to the gas mixture was found to extend the lifetime of the straws. Continuous flow of the gas mixture with water vapor through the straws prolonged the lifetime significantly. We present results on the effects of changing the gas mixture inside the straws at regular time intervals. Adding a small percentage of water vapor to the argon-ethane gas and flowing the gas mixture in the straws can improve the lifetime by more than an order of magnitude. An accumulated charge of 1.0 C/cm on a single straw has been obtained.

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DO - 10.1016/0168-9002(89)91439-3

M3 - Article

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SN - 0168-9002

VL - 283

SP - 679

EP - 681

JO - Nuclear Inst. and Methods in Physics Research, A

JF - Nuclear Inst. and Methods in Physics Research, A

IS - 3

ER -

Study of straw chamber lifetime with argon ethane

Abstract

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