Difference between revisions of "Lock-In Peaks"
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Keeping an eye on the polarization of the target when it should be stable is part of the TO's responsibilities. One easy way to check that the target polarization is working well is to look at the lock-in peak heights. The TO should make a log entry of these peaks once per shift or any time they change significantly. | Keeping an eye on the polarization of the target when it should be stable is part of the TO's responsibilities. One easy way to check that the target polarization is working well is to look at the lock-in peak heights. The TO should make a log entry of these peaks once per shift or any time they change significantly. | ||
| − | If you are ramping up at target, these peaks will be steadily increasing in height. You want to watch for a sudden drop. If this happens, call an expert. | + | If you are ramping up at target and doing NMR sweeps, these peaks will be steadily increasing in height. You want to watch for a sudden drop. If this happens, call an expert. |
== Lock-In Amplitudes == | == Lock-In Amplitudes == | ||
* Saturday October 15 2022, 2:30am: https://logbooks.jlab.org/entry/4059408 | * Saturday October 15 2022, 2:30am: https://logbooks.jlab.org/entry/4059408 | ||
Latest revision as of 04:39, 15 October 2022
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Keeping an eye on the polarization of the target when it should be stable is part of the TO's responsibilities. One easy way to check that the target polarization is working well is to look at the lock-in peak heights. The TO should make a log entry of these peaks once per shift or any time they change significantly.
If you are ramping up at target and doing NMR sweeps, these peaks will be steadily increasing in height. You want to watch for a sudden drop. If this happens, call an expert.
Lock-In Amplitudes
- Saturday October 15 2022, 2:30am: https://logbooks.jlab.org/entry/4059408
