Difference between revisions of "Spin flip/quarter wave plate calibration"
From Hall A Wiki
(→Connection Map) |
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| Line 5: | Line 5: | ||
|- | |- | ||
! Pumping Direction | ! Pumping Direction | ||
| − | ! Laser | + | ! Laser Component |
! Motor ID | ! Motor ID | ||
! Laser Platform Patch Panel | ! Laser Platform Patch Panel | ||
| Line 11: | Line 11: | ||
! Controller ID | ! Controller ID | ||
|- | |- | ||
| − | | Longitudinal || | + | | Longitudinal || S Wave || 1 (taken out) || 1 || 1 || 0338 |
|- | |- | ||
| − | | Longitudinal || | + | | Longitudinal || P Wave || 2 (taken out) || 2 || 2 || 1426 |
|- | |- | ||
| − | | Transverse || | + | | Transverse || S Wave || 3 || 3 || 3 || ? |
|- | |- | ||
| − | | Transverse || | + | | Transverse || P Wave || 4 || 4 || 4|| ? |
|- | |- | ||
| − | | Vertical || | + | | Vertical || S Wave || 5 || 5 || 5 || ? |
|- | |- | ||
| − | | Vertical || | + | | Vertical || P Wave || 6 || 6 || 6 || ? |
|} | |} | ||
Revision as of 02:24, 12 October 2008
This page summarize the calibration data for quarter wave plate holders, which control the pumping laser polarization of Hall A He3 Polarized Target.
Connection Map
| Pumping Direction | Laser Component | Motor ID | Laser Platform Patch Panel | 50Ft Ext. Cable ID | Controller ID |
|---|---|---|---|---|---|
| Longitudinal | S Wave | 1 (taken out) | 1 | 1 | 0338 |
| Longitudinal | P Wave | 2 (taken out) | 2 | 2 | 1426 |
| Transverse | S Wave | 3 | 3 | 3 | ? |
| Transverse | P Wave | 4 | 4 | 4 | ? |
| Vertical | S Wave | 5 | 5 | 5 | ? |
| Vertical | P Wave | 6 | 6 | 6 | ? |
Current Setting
| Motor ID | Controller ID | Description | Alignment Angle/Degree | Auto calibration Error/Degree | Spin Up Read Back/Degree | Spin Down Read Back/Degree |
|---|---|---|---|---|---|---|
| 1 | ? | ? | 8.4 | 0.15 | 8.25 | -81.75 |
| 2 | ? | ? | 8.5 | 0.40 | 8.10 | -81.90 |
| 3 | ? | ? | 7.5 | -1.50 | 9.00 | -81.00 |
| 4 | ? | ? | 8.8 | 0.00 | 8.80 | -81.20 |
| 5 | ? | ? | 10.8 | 0.40 | 10.40 | -79.60 |
| 6 | ? | ? | 9.8 | 1.00 | 8.80 | -81.20 |
- Motor ID : The sticker attached to the motor
- Controller ID : ID number of control connected to the motor
- Alignment Angle : When the mark of Q-wave plate is at this angle, all plates will convert a vertical polarized laser to a circular polarized one. Besides, the polarization direction is the same.
- Auto calibration error : is the marker angle on the plate holder, while the holder is shown to be rotated to 0 degree on the computer. The reason why it is not 0, is due to non-perfect precision of automatic calibration.
- Position Up/Down Read Back: The angle setting on the computer for spin state Up/Down.
Old Settings
Currently Empty
