Wire aging of hydrocarbon gases with TMAE additions

Conference · Sun Feb 01 04:00:00 EST 1987 · IEEE Trans. Nucl. Sci.; (United States)

OSTI ID:6707956

Va'vra, J

The authors report on experimental results describing wire aging properties of the CRID/RICH detectors in the TMAE gas environment. This test used 7 ..mu..m and 33 ..mu..m diameter carbon fibers, and 20 ..mu..m diameter gold-plated tungsten wires as sense wires, and operated in gas mixtures of either CH/sub 4/ or C/sub 2/H/sub 6/ at 1 atm, together with 0.6 Torr of the photoionizing vapor TMAE (tetrakis dimethylamino ethylene), which serves as a photocathode in the CRID detectors. The wires were damaged by the Fe/sup 55/ X-rays. This paper is based on irradiation of 20 wires, each being a separate test. The gas purity was consistent with requirements of CRID detectors (< 1 ppm of oxygen, < 1 ppm of water). The test explored the aging as a function of wire diameter, wire material, gas flow, gas temperature, rate of radiation and gas type. Several chemical analyses of the deposit samples were performed (FTIR, ESCA and GC-MS techniques).

• Research Organization: Stanford Linear Accelerator Center, Stanford Univ., Stanford, CA 94305
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 6707956
• Report Number(s): CONF-861007-
• Conference Information: Journal Name: IEEE Trans. Nucl. Sci.; (United States) Journal Volume: NS-34:1
• Country of Publication: United States
• Language: English

Related Subjects

440104* -- Radiation Instrumentation-- High Energy Physics Instrumentation
440200 -- Radiation Effects on Instrument Components
Instruments
or Electronic Systems
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
AGING
ALKENES
AMINES
BETA DECAY RADIOISOTOPES
CARBON FIBERS
CATHODES
CHERENKOV COUNTERS
DATA
ELECTRODES
ELECTROMAGNETIC RADIATION
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTS
ETHYLENE
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FIBERS
FLUID FLOW
GAS FLOW
GOLD
HYDROCARBONS
INFORMATION
INTERMEDIATE MASS NUCLEI
IONIZATION
IONIZING RADIATIONS
IRON 55
IRON ISOTOPES
ISOTOPES
MASS SPECTROSCOPY
MATERIALS TESTING
MEASURING INSTRUMENTS
MEDIUM PRESSURE
MEDIUM VACUUM
METALS
NUCLEI
NUMERICAL DATA
ORGANIC COMPOUNDS
PHOTOCATHODES
PHOTOIONIZATION
PHYSICAL RADIATION EFFECTS
RADIATION DETECTORS
RADIATION EFFECTS
RADIATIONS
RADIOISOTOPES
SPECTROSCOPY
TEMPERATURE EFFECTS
TESTING
TRANSITION ELEMENTS
TUNGSTEN
WIRES
X RADIATION
YEARS LIVING RADIOISOTOPES