Document Details
PURL
(362 K)
Title:
Hupmobile cloud chamber parameters
Author(s):
Document Type:
REPORT
Publication Date:
1967 Sep 28
Document Pages:
6 p.
Document Number(s):
UCRL-ID-124769
Originating Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OpenNet Entry Date:
1997 Mar 17
OpenNet Modified Date:
2014 Jan 03
Description/Abstract:
The accompanying table lists the presently selected parameters for the twelve cloud chambers. The chambers are numbered consecutively from 4 through 15 as they are lined up in the bunker. The lowest number is closest to the source. All except the first chamber have some thin metal filters to attenuate the flux and harden the spectrum. Cloud chambers 10, 12, and 14 are shielded by a collimator with about 200 pinholes in it. The flux in these chambers is attenuated by the ratio of the pinhole area to total beam area which is a factor of 50. Various gases and gas pressures are used to obtain suitable track lengths and interaction cross sections. Neon, argon, and krypton are used to obtain photo electrons. Hydrogen is used to obtain Compton electrons.