PITMinutes 05-07-2018

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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)

Yet another version of Tom's presentation

A brief analysis of some of the data collected with the RF waveform harvester

Measurement regarding C100 Quenches

4. C100 Refurbishment Planning (Freyberger)

C100 System Improvement Discussion

Items Request Email

C100 Refurbishment Brainstorming List

Action Items

Leadership of quenches. Offline discussion.

Complete C75 Module Specifications (Marhauser, Benesch, Krafft)

C100 Refurbishment Project for the future?