RFQ Test stand - test co-ordination

Friday 7 Mar 2025, 15:00 → 15:30 Europe/Zurich

L. Millar, S. Ramberger, E. Sargsyan, R. Scrivens, R. Wegner

Excused: G. Bellodi, J.-B. Lallement, K. Schirm, L. Timeo.

 

The RFQ has reached 20kW (nominal will be 400-500 kW). With power there is a pressure rise, and futher power increases generally cause the vacuum interlock is triggered too frequently to make conditioning efficient. Conditioning has to stop overnight at request of klystron team, Suitbert is trying to get overnight conditioning to be possible.

After conditioning there are no other major measurements to make. Pulse length is presently 670us from the RF. The set up for longer pulses that was discussed with EPC should be done at higher RF power, this could be towards the end of conditioning, or after the RFQ is moved.

Spreader – Suitbert reported that the production date is still 20 March, to be followed by transport to CERN. A homologation should be done at CERN based on the docs from the supplier and in the past this only took half a day. It could be ready for use on 31 March.

Source – The proton source short extraction system was installed and is being conditioned, gas should be injected next week, with beam tests expected the week after. This would be followed by modification to the nominal extraction geometry, and brief conditioning of the source for testing. Edgar proposed this could be ready to allow RFQ moving on 7 April. We agreed with this proposal, and to discuss the schedule again on 19 March.

Discussing the schedule, we propose to start the process of moving the RFQ on 7 April, and a meeting on the details will be organized in the week of 24 March.

15:00 → 15:30 Discussion

Update on conditioning – Suitbert
Spreader delivery schedule – Suitbert
Source tests - short extraction system – Edgar
Schedule Update
Date selection for RFQ move meeting

Speakers: Edgar Sargsyan (CERN), Suitbert Ramberger (CERN)