Difference between revisions of "PITMinutes 07-18-2016"

Revision as of 13:53, 18 July 2016

Attendance

R. Bachimanchi, M. Drury, R. Geng, C. Hovater, A. Hutton, G. Krafft, A. Kimber, C. Mounts, R. Nelson, T. Plawski, T. Powers, C. Reece, T. Reilly, R. Rimmer

Agenda and Notes

1. Operations Status and Summary

Microphonic damping feet on 0L04: correlation studies torque unused feet and microphonics.

Stabilization equipmment on SL-24\: Kirk Davis and Tom taking before and after data. Modify connections and check mode frequencies. Minimize transfer into cavities. Tuner damper to damp MP installed.

Tuner damper rings in FEL04 also.

Controls improvements to improve recovery times. Better diagnsotics Periodic trips being observed again. Snooping around for sources.

RF Software improvement? capture trip. reduce interactions tuners and MP they generate.

might be benefity by raising press of SL 3-4 mbar.

2. C50-12 Warm Girder Study Plan

zBoth girders out,

Modules next few days.

Sampling plan for girders.

About 20 different points.

Samples will be also taken as gate valvues replaced.

No visibliy dirty in beam pipe but dust has been observed.

valves problems.

warm val failures

Radiation problems?

Added valve update and replacement to allow work, Warm regions will be pulled and looked at and processed in SRF institute. Studies of warm girders next to the removed 1L12 cryomodule. Cryogenic planning for C50-12 discussed at 2:30. May have to warm up NL10 and NL14 also. Talk through cycling of internal valves from contamination point of view.

Clean interior of both sides.

3. C75 on hold (Gigi Report)

4. Effects of desorbed gas on FE (Geng)

Field Emission/ Talk