Physics – Instrumentation and Detectors
Scientific paper
2007-01-04
Vacuum82:645-650,2008
Physics
Instrumentation and Detectors
11 pages, 3 figures, submitted to Elsevier Vacuum
Scientific paper
10.1016/j.vacuum.2007.10.005
Measurements with low Z targets at internal experiments typically imply a gas load which deteriorates the ring vacuum. Future experiments need reliable estimates for the expected vacuum conditions in order to design 4-pi detectors closely surrounding the interaction area. We present a method for the calculation of the resulting vacuum of such a complex system using a Pellet Target. In order to test the method, a vacuum system with diagnostic tools has been set up and a Pellet Target was operated under realistic conditions. The results for the absolute vacuum agree within factors of two with the expected pressures.
Ekstrom Curt
Friden Carl-Johan
Johansson Tord
Lehmann Inti
Nordhage Orjan
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