Difference between revisions of "Target Field and Kepco Info"
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==Plan for returning from COVID shutdown== | ==Plan for returning from COVID shutdown== | ||
| − | * Follow manufacturers "Check out" procedure for new power supply which was delivered during shutdown | + | * Work that can begin immediately (June 10th, 2020) |
| − | * Measure resistance to ground for both coils | + | ** Follow manufacturers "Check out" procedure for new power supply which was delivered during shutdown |
| − | * Install latest new power supply, add additional circuitry | + | ** Measure resistance to ground for both coils |
| − | * Test power supplies in both current and voltage control mode | + | ** Install latest new power supply, add additional circuitry |
| − | * Look at PS output on scope, with and without RF on. | + | ** Test power supplies in both current and voltage control mode |
| − | * | + | ** Look at PS output on scope, with and without RF on. |
| − | * Ensure Labview is ready to go for either configuration | + | ** Ensure Labview is ready to go for either configuration |
| + | |||
| + | *After the cell is polarized | ||
| + | ** Test NMR in both voltage and current mode | ||
==Manuals/Documentation== | ==Manuals/Documentation== | ||
* [[Media:KEPCO.pdf|Note on KEPCO power supplies]] | * [[Media:KEPCO.pdf|Note on KEPCO power supplies]] | ||
Revision as of 07:45, 10 June 2020
This page is dedicated to all things Target Field related
Log Entries
- Nov. 26th Kepcos replaced Agilents https://logbooks.jlab.org/entry/3744320
- Dec. 26th V_in vs Current Calibration for two Kepcos in voltage control mode https://logbooks.jlab.org/entry/3747508
- Jan. 4th Swapped out Kepco with another Kepco because it was not stable https://logbooks.jlab.org/entry/3758511
- Jan. 15th Swapped out Kepco with another Kepco because it was running hot and tripping https://logbooks.jlab.org/entry/3764365
- Feb. 9th Field sweep program updated for Agilent https://logbooks.jlab.org/entry/3780264
- Feb. 10th Replaced Kepco with Agilent. Rearranged rack for better cooling https://logbooks.jlab.org/entry/3781492
- Feb. 14th Replaced Agilent with new Kepco. In constant current mode the inductive load option interfered with NMR https://logbooks.jlab.org/entry/3783977
- March 18th In constant voltage mode, coils need time to warm up https://logbooks.jlab.org/entry/3805990
- March 22nd New Kepco had odd behavior in voltage mode. Transverse NMR was not working. Left in current mode. https://logbooks.jlab.org/entry/3807357
- March 22nd Odd behavior explained from above. Noticed possible grounding issues. https://logbooks.jlab.org/entry/3807894
- March 24th Trouble getting transverse NMR signal. Bad Cable? https://logbooks.jlab.org/entry/3809148
Coil Currents for D2n
SHMS 11 degrees
| Field Direction | Helm. Lg. | Helm. Sm. | Vert. Lg. | Vert. Sm. |
|---|---|---|---|---|
| 0 | 0.0 | 7.280 | ||
| 90 | 7.406 | -0.25 | ||
| 180 | -7.350 | 0 | ||
| 270 | -7.364 | -0.237 |
SHMS 11 degrees
| Field Direction | Helm. Lg. | Helm. Sm. | Vert. Lg. | Vert. Sm. |
|---|---|---|---|---|
| 0 | ||||
| 90 | ||||
| 180 | ||||
| 270 |
Labview Program Guide
Field Measurements
- A1n Vertical Field Measurement (March 13th, 2019)
https://logbooks.jlab.org/entry/3804362
Plan for returning from COVID shutdown
- Work that can begin immediately (June 10th, 2020)
- Follow manufacturers "Check out" procedure for new power supply which was delivered during shutdown
- Measure resistance to ground for both coils
- Install latest new power supply, add additional circuitry
- Test power supplies in both current and voltage control mode
- Look at PS output on scope, with and without RF on.
- Ensure Labview is ready to go for either configuration
- After the cell is polarized
- Test NMR in both voltage and current mode
