Aging tests of ethylene contaminated argon/ethane
- Fermi National Accelerator Lab., Batavia, IL (United States)
- Massachusetts Inst. of Tech., Cambridge, MA (United States)
We report on aging tests of argon/ethane gas with a minor (1800 ppM) component of ethylene. The measurements were first conducted with the addition of alcohol to test the suppression of aging by this additive, with exposure up to {approx}1.5 C/cm. Tests have included: a proportional tube with ethanol, another with isopropyl alcohol, and for comparison a tube has also been run with ethanol and argon/ethane from CDF`s old (ethylene-free) ethane supply. The aging test with ethanol showed no difference between the ethylene-free and the ethylene tube. Furthermore, raw aging rates of argon/ethane and argon/ethane/ethylene were measured by exposing tubes without the addition of alcohol to about 0.1 C/cm. Again, no significant difference was observed. In conclusion, we see no evidence that ethylene contamination up to 1800 ppM has any adverse effect on wire aging. However, this level of ethylene does seem to significantly suppress the gas gain.
- Research Organization:
- Fermi National Accelerator Lab., Batavia, IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC02-76CH03000
- OSTI ID:
- 10193147
- Report Number(s):
- FNAL/C--94/340-E; ON: DE95002526; IN: CDF/DOC/TRACKING/PUBLIC/CDF/2828
- Country of Publication:
- United States
- Language:
- English
Similar Records
Improved wire chamber
Study of straw chamber lifetime with argon ethane