There is a leakage of water in cavity north of cyclotron CSS1. I discussed with Alain Savale.
There are 2 options:
1) We take the beam as it is, probably deteriorated, with a lower intensity. There is a risk of break up in CSS1. The vacuum of the cavity is maintained probably by a small piece of ice only.
2) They can make a new setting of CSS1, using only one acceleration cavity (south). They would stop the north cavity and reduce the water pressure. In this case the beam is also deteriorated.
Decision:
We chose option 1 and we will observe the stability of the vacuum in CSS1 in time. If the stability is bad, vacuum too bad, later in the day they will decide to go to option 2. This means several hours without beam (may be a few hours). |