The vacuum system of the GANIL beam lines
Résumé
The GANIL beam lines are 400 m. long and the average diameter of the pipes is 60 mm. Every fifth meter a beam diagnostic with a high
desorption rate is installed. A pressure lower than 10-5 Pascal is required. The method of vacuum calculation, the reasons for the choice of our pumps (turbo molecular and cryogenic) and the results are given.
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