Difference between revisions of "PITMinutes 07-27-2020"
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== Attendance == | == Attendance == | ||
| − | K. Baggett, J. Benesch, M. Bickley, T. Carlino, G. Ciovati, J. Creel, E. Daly, K. Davis, M. Drury, C. Hovater, N. Huque, F. Humphrey, T. Ganey, C. Ginsburg | + | K. Baggett, J. Benesch, M. Bickley, T. Carlino, G. Ciovati, J. Creel, E. Daly, K. Davis, M. Drury, C. Hovater, N. Huque, F. Humphrey, T. Ganey, C. Ginsburg, A. Kimber, L. King, G. Krafft, F. Marhauser, R. Michaud, C. Mounts, R. Nelson, W. Oren, A. Palczewski., T. Plawski, T. Powers, J. Preble, C. Reece, T. Reilly, A. Seryi, A. Solopova, M. Spata, and P. Vasilauskis |
== Agenda and Notes == | == Agenda and Notes == | ||
| Line 9: | Line 9: | ||
Action items:[1] Continue analysis of two hour pressure spikes | Action items:[1] Continue analysis of two hour pressure spikes | ||
and check module stability after problem solved. | and check module stability after problem solved. | ||
| + | |||
| + | Pressure spikes solved. Control valve convection heat | ||
| + | leak. Now have the value held open and seems to have | ||
| + | been solution. | ||
| + | |||
[2] Increase Q_ext to allow higher operating gradient | [2] Increase Q_ext to allow higher operating gradient | ||
in 4 cavities | in 4 cavities | ||
| − | [3] Turn on 1L08, in particular cavity | + | |
| + | 3 of 4 were adjusted up. CED updated. Fourth could not | ||
| + | be adjusted. Couple MeV increase in linac gradient | ||
| + | |||
| + | [3] Turn on 1L08 1, in particular cavity one at | ||
low gradient. Hold field at low set point to avoid | low gradient. Hold field at low set point to avoid | ||
uncontrolled gradient in cavity (cannot be detuned | uncontrolled gradient in cavity (cannot be detuned | ||
away from fundamental frequency) | away from fundamental frequency) | ||
| + | |||
| + | Cards changed out unstuck the tuner. So now cavity | ||
| + | can be operated. 6 or so MeV. | ||
| + | |||
| + | [4] 0L03-4 stuck tuned. Working on chassis to get | ||
| + | fixed. Tuning card also had an issue, to be replace | ||
| + | next maintenance. | ||
| + | |||
| + | [5] Presently 9 cavities in north | ||
| + | and 4 plus module 2L03 in south hard down. | ||
| + | |||
| + | [6] Heat load down and seems to be under control. | ||
| + | |||
| + | [7] Lemming to 1031 on both sides and will not have | ||
| + | to run asymetrically. | ||
| + | |||
2. General Discussion (Krafft) | 2. General Discussion (Krafft) | ||
| Line 25: | Line 50: | ||
longer term. | longer term. | ||
| − | Charlie's | + | Charlie's SRF link to description slide. |
| − | + | Marhauser talk link | |
3. Progress on Particle Counter (Geng/Spata) | 3. Progress on Particle Counter (Geng/Spata) | ||
| Line 34: | Line 59: | ||
design. Detect phase shifts in interferometer | design. Detect phase shifts in interferometer | ||
arrangement. | arrangement. | ||
| + | |||
| + | July 22 updated solution and updated cost presented | ||
| + | to division leadership. Waiting for favorable | ||
| + | financial decision. | ||
| + | |||
| + | Action Item | ||
| + | |||
| + | New Ion pump evaluation; | ||
Latest revision as of 14:47, 27 July 2020
Attendance
K. Baggett, J. Benesch, M. Bickley, T. Carlino, G. Ciovati, J. Creel, E. Daly, K. Davis, M. Drury, C. Hovater, N. Huque, F. Humphrey, T. Ganey, C. Ginsburg, A. Kimber, L. King, G. Krafft, F. Marhauser, R. Michaud, C. Mounts, R. Nelson, W. Oren, A. Palczewski., T. Plawski, T. Powers, J. Preble, C. Reece, T. Reilly, A. Seryi, A. Solopova, M. Spata, and P. Vasilauskis
Agenda and Notes
1. Operations Status and Summary/Review (Bickley/Drury)
Action items:[1] Continue analysis of two hour pressure spikes and check module stability after problem solved.
Pressure spikes solved. Control valve convection heat leak. Now have the value held open and seems to have been solution.
[2] Increase Q_ext to allow higher operating gradient in 4 cavities
3 of 4 were adjusted up. CED updated. Fourth could not be adjusted. Couple MeV increase in linac gradient
[3] Turn on 1L08 1, in particular cavity one at low gradient. Hold field at low set point to avoid uncontrolled gradient in cavity (cannot be detuned away from fundamental frequency)
Cards changed out unstuck the tuner. So now cavity can be operated. 6 or so MeV.
[4] 0L03-4 stuck tuned. Working on chassis to get fixed. Tuning card also had an issue, to be replace next maintenance.
[5] Presently 9 cavities in north and 4 plus module 2L03 in south hard down.
[6] Heat load down and seems to be under control.
[7] Lemming to 1031 on both sides and will not have to run asymetrically.
2. General Discussion (Krafft)
Resume every other week meeting on RF/SRF issues.
Focus on OPS issues near term; get back to long term focus in longer term.
Charlie's SRF link to description slide.
Marhauser talk link
3. Progress on Particle Counter (Geng/Spata)
Particle Counter getting closer. Now design is focusing on "laser blanket" for aperture design. Detect phase shifts in interferometer arrangement.
July 22 updated solution and updated cost presented to division leadership. Waiting for favorable financial decision.
Action Item
New Ion pump evaluation;
