Difference between revisions of "PITMinutes 07-17-2020"
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== Attendance == | == Attendance == | ||
| − | K. Baggett, J. Benesch, M. Bickley, E. Daly, K. Davis, M. Drury, C. Hovater, | + | 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, J. Kent, 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 == | ||
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| − | + | ||
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1. Operations Status and Summary/Review (Bickley/Drury) | 1. Operations Status and Summary/Review (Bickley/Drury) | ||
Results of 1L25 FE measurements | Results of 1L25 FE measurements | ||
| − | + | ||
| + | [https://casa.jlab.org/LINACPIT/FE_Measurements_at_1L25_071720.pptx Summary of Field Emission Measurements] | ||
2. Energy Reach (Mounts) | 2. Energy Reach (Mounts) | ||
| + | |||
RF/SRF issues and current energy reach | RF/SRF issues and current energy reach | ||
| − | + | 14 cavities hard off in North linac | |
| + | 4 cavities hard off in South linac | ||
| + | |||
| + | Lem to 1031/linac has very high trip rate | ||
| + | at moment. | ||
| + | Non-symmetrical running leads to loss of | ||
| + | polarization in one of Hall A or Hall C | ||
| − | 3. | + | 3. General discussion |
| − | + | Action items:[1] Continue analysis of two hour pressure spikes | |
| + | and check module stability after problem solved. | ||
| + | [2] Increase Q_ext to allow higher operating gradient | ||
| + | in 4 cavities | ||
| + | [3] Turn on 1L08, in particular cavity three at | ||
| + | low gradient. Hold field at low set point to avoid | ||
| + | uncontrolled gradient in cavity (cannot be detuned | ||
| + | away from fundamental frequency) | ||
Latest revision as of 11:26, 17 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, J. Kent, 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)
Results of 1L25 FE measurements
Summary of Field Emission Measurements
2. Energy Reach (Mounts)
RF/SRF issues and current energy reach
14 cavities hard off in North linac 4 cavities hard off in South linac
Lem to 1031/linac has very high trip rate at moment.
Non-symmetrical running leads to loss of polarization in one of Hall A or Hall C
3. General discussion
Action items:[1] Continue analysis of two hour pressure spikes and check module stability after problem solved. [2] Increase Q_ext to allow higher operating gradient in 4 cavities [3] Turn on 1L08, in particular cavity three at low gradient. Hold field at low set point to avoid uncontrolled gradient in cavity (cannot be detuned away from fundamental frequency)
