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CLEARING TIME IN MAGNETIC FIELD SPARK CHAMBERS

Author
Murphy, Jr, F. W.
Published
United States : [publisher not identified], 1962.
[Oak Ridge, Tennessee] : [U.S. Atomic Energy Commission], 1962.
Physical Description
microopaque : positive ; 8 x 13 cm
Additional Creators
O'Neill, G. K.

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Summary
Electric fields commonly used to reduce sensitive time in a spark chamber introduce some problems, such as shifts in spark positions, when the spark chamber is used in a magnetic field. The usefulness of chemical clearing agents (gases with electron affinity) should not, however, be affected by magnetic fields. It is found that 1/2% SO/sub 2/ in Ne at 1.3 atm. in a spark chamber with 50 3-mm gaps reduces track efficiency at 2 mu sec total delay to less than 20% of the efficiency at 0.39 mu sec, and is substantially unaffected by 10 kgauss field, while 1% SO/sub 2/ clears even faster. (auth)
Report Numbers
PPAD-454E
Other Subject(s)
Collection
U.S. Atomic Energy Commission depository collection.
Note
DOE contract number: AT(30-1)-2137
NSA number: NSA-17-003311
OSTI Identifier 4777299
Research organization: Princeton-Pennsylvania Accelerator, PPrinceton, N.J.
View MARC record | catkey: 42244865