Difference between revisions of "PITMinutes 05-07-2018"

Revision as of 08:36, 2 May 2018

Attendance

R. Bachimanchi, K. Baggett, M. Drury, A. Freyberger, R. Geng, A. Hutton, G. Krafft, A. Kimber, R. Legg, C. Mounts, R. Nelson, T. Plawski, T. Powers, C. Reece, T. Reilly, R. Rimmer, and A. Solopova.

Agenda and Notes

1. Operations Status and Summary/Review (Freyberger)

High average current limits remain. Usually A runs 22.5 muA and C runs 50-60 muA. Seems more and more solid that the Hall C current limit is 70-75 muA, independent of the Hall A current. And the main trips are from beam loss. So focus is shifting back to injector. Today, bunch length measurements are being made for the different Hall bunches. Recent work points to longitudinal phase space tails causing high average current trips. Is there a better diagnostic for these?

Anna will be working on getting a handle on OPS-initiated reductions in the C100 cavity gradients. First try to understand why people are reducing them and work through mitigations.

2. C100 Performance Studies (Solopova)

C100 Performance Talk

3. C100 Quenches (Powers)

Measurement regarding C100 Quenches

4. C100 Refurbishment Planning (Freyberger)

Items Request Email

C100 Refurbishment Brainstorming List

5. Draft Cryomodule Specification (Benesch)

Jay has written up a set of goals for the cryomodules: Draft Cryomodule Specification

6. Draft Acceptance Criteria (Legg)

Bob shared the LCLS II module acceptance criteria that the LCLS II project is working under. We should perhaps adopt something similar for C75? (Discuss Pros and Cons)

LCLS II Module Acceptance Criteria

Action Items

Leadership of quenches. Offline discussion.

Complete C75 Module Specifications (Marhauser, Benesch, Krafft)

C100 Refurbishment Project for the future?