Radiation aging studies of CO/sub 2/ hydrocarbon mixtures for the SLD drift chamber
The SLD drift chamber require a slow drifting gas and low diffusion to allow wave form digitization. CO/sub 2/ provides this but requires an admixture of a quencher to provide more gain. A test chamber with an 8 sense wire cell, such as will appear in the final chamber, was exposed to an X-ray tube while containing a variety of binary admixtures of CO/sub 2/: 8% isobutane, 8% ethane, and 2% isopropanol. It was determined that adding small fractions of water (less than or equal to0.66%) or isopropanol (1-2%) to the CO/sub 2/: 8% ethane, or 8% isobutane extended the useful life of the chamber so that integrated charge collections of --1 C/cm are permissible. Results and discussions are presented.
- Research Organization:
- Vanderbilt Univ., Nashville, TN (US); Stanford Linear Accelerator Center, Stanford Univ., Stanford, CA (US)
- OSTI ID:
- 6177065
- Report Number(s):
- CONF-881103-
- Journal Information:
- IEEE Trans. Nucl. Sci.; (United States), Journal Name: IEEE Trans. Nucl. Sci.; (United States) Vol. 36:1; ISSN IETNA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
440200* -- Radiation Effects on Instrument Components
Instruments
or Electronic Systems
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
654001 -- Radiation & Shielding Physics-- Radiation Physics
Shielding Calculations & Experiments
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALCOHOLS
ALKANES
BUTANE
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL RADIATION EFFECTS
CHEMISTRY
CURING
DISPERSIONS
DRIFT CHAMBERS
ELECTRON TUBES
EQUIPMENT
ETHANE
HYDROCARBONS
HYDROXY COMPOUNDS
MEASURING INSTRUMENTS
MIXTURES
MULTIWIRE PROPORTIONAL CHAMBERS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PROPANOLS
PROPORTIONAL COUNTERS
RADIATION CHEMISTRY
RADIATION CURING
RADIATION DETECTORS
RADIATION EFFECTS
RADIATION TRANSPORT
X-RAY EQUIPMENT
X-RAY TUBES