Difference between revisions of "Spin flip/quarter wave plate calibration"
From Hall A Wiki
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| Transverse || S Wave || 3 || 3 || 3 || 0338 | | Transverse || S Wave || 3 || 3 || 3 || 0338 | ||
|- | |- | ||
| − | | Transverse || P Wave || 4 || 4 || 4|| | + | | Transverse || P Wave || 4 || 4 || 4|| 1474 |
|- | |- | ||
| Vertical || S Wave || 5 || 5 || 5 || 1426 | | Vertical || S Wave || 5 || 5 || 5 || 1426 | ||
| Line 25: | Line 25: | ||
== Current Setting == | == Current Setting == | ||
| + | |||
| + | === Log === | ||
| + | |||
| + | # Summer 2008, Init calibration | ||
| + | # Dec 02, 2008, Transverse Laser Absorption Calibration | ||
| + | #* Try to rotate motor # 0338 and # 1474 to maximize absorption spectrum @ 795.1nm | ||
| + | #* Condition: Transvers -; Spin -; 3x Comet Laser | ||
| + | #* Result : Get maximize absorption peak @ 0338 = 3 (Degree, readback); 1474=-84 (Degree, readback) | ||
| + | # May 22, 2009; Recalibrate Motor #3 and #4 in lab. Their calibration angle kept unchanged. However, Auto calibration Error of motor #3 shifted from -1.5 to 0.2 | ||
| + | |||
| + | === Setting Table === | ||
<onlyinclude>{| class="wikitable sortable" border="1" frame="hsides" rules="rows" | <onlyinclude>{| class="wikitable sortable" border="1" frame="hsides" rules="rows" | ||
| Line 40: | Line 51: | ||
|2|| N/A || Not In Use || 8.5||0.40||8.10||-81.90 | |2|| N/A || Not In Use || 8.5||0.40||8.10||-81.90 | ||
|- | |- | ||
| − | |3|| 0338 || Transverse S Wave || 7.5|| | + | |3|| 0338 || Transverse S Wave || 7.5||0.2||7.3||-82.70 |
|- | |- | ||
| − | |4|| | + | |4|| 1474 || Transverse P Wave || 8.8||0.00||8.80||-81.20 |
|- | |- | ||
|5|| 1426 || Vertical S Wave || 10.8||0.40||10.40||-79.60 | |5|| 1426 || Vertical S Wave || 10.8||0.40||10.40||-79.60 | ||
| Line 57: | Line 68: | ||
== Old Settings == | == Old Settings == | ||
| + | |||
| + | === Before May 22,2009 === | ||
| + | |||
| + | <onlyinclude>{| class="wikitable sortable" border="1" frame="hsides" rules="rows" | ||
| + | |- | ||
| + | ! Motor ID | ||
| + | ! Controller ID | ||
| + | ! Description | ||
| + | ! Alignment Angle/Degree | ||
| + | ! Auto calibration Error/Degree | ||
| + | ! Spin Up Read Back/Degree | ||
| + | ! Spin Down Read Back/Degree | ||
| + | |- | ||
| + | |1|| N/A || Not In Use || 8.4||0.15||8.25||-81.75 | ||
| + | |- | ||
| + | |2|| N/A || Not In Use || 8.5||0.40||8.10||-81.90 | ||
| + | |- | ||
| + | |3|| 0338 || Transverse S Wave || 7.5||-1.50||6.5 ''(Dec 02, 2008 re-calib)''||-83.5 ''(Dec 02, 2008 re-calib)'' | ||
| + | |- | ||
| + | |4|| 1474 || Transverse P Wave || 8.8||0.00||6.5 ''(Dec 02, 2008 re-calib)''||-83.5 ''(Dec 02, 2008 re-calib)'' | ||
| + | |- | ||
| + | |5|| 1426 || Vertical S Wave || 10.8||0.40||10.40||-79.60 | ||
| + | |- | ||
| + | |6|| 1423 || Vertical P Wave || 9.8||1.00||8.80||-81.20 | ||
| + | |} | ||
| + | <small> | ||
| + | * '''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. | ||
| + | </small></onlyinclude> | ||
| + | |||
| + | === Before Dec 2, 2008 === | ||
| + | |||
| + | <onlyinclude>{| class="wikitable sortable" border="1" frame="hsides" rules="rows" | ||
| + | |- | ||
| + | ! Motor ID | ||
| + | ! Controller ID | ||
| + | ! Description | ||
| + | ! Alignment Angle/Degree | ||
| + | ! Auto calibration Error/Degree | ||
| + | ! Spin Up Read Back/Degree | ||
| + | ! Spin Down Read Back/Degree | ||
| + | |- | ||
| + | |1|| N/A || Not In Use || 8.4||0.15||8.25||-81.75 | ||
| + | |- | ||
| + | |2|| N/A || Not In Use || 8.5||0.40||8.10||-81.90 | ||
| + | |- | ||
| + | |3|| 0338 || Transverse S Wave || 7.5||-1.50||9.00||-81.00 | ||
| + | |- | ||
| + | |4|| 1474 || Transverse P Wave || 8.8||0.00||8.80||-81.20 | ||
| + | |- | ||
| + | |5|| 1426 || Vertical S Wave || 10.8||0.40||10.40||-79.60 | ||
| + | |- | ||
| + | |6|| 1423 || Vertical P Wave || 9.8||1.00||8.80||-81.20 | ||
| + | |} | ||
| + | <small> | ||
| + | * '''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. | ||
| + | </small></onlyinclude> | ||
| + | |||
| + | |||
Currently Empty | Currently Empty | ||
Latest revision as of 22:03, 22 May 2009
This page summarize the calibration data for quarter wave plate holders, which control the pumping laser polarization of Hall A He3 Polarized Target.
Contents
Connection Map
| Pumping Direction | Laser Component | Motor ID | Laser Platform Patch Panel | 50Ft Ext. Cable ID | Controller ID |
|---|---|---|---|---|---|
| Longitudinal | S Wave | 1 (tested & taken out) | 1 | 1 | None |
| Longitudinal | P Wave | 2 (tested & taken out) | 2 | 2 | None |
| Transverse | S Wave | 3 | 3 | 3 | 0338 |
| Transverse | P Wave | 4 | 4 | 4 | 1474 |
| Vertical | S Wave | 5 | 5 | 5 | 1426 |
| Vertical | P Wave | 6 | 6 | 6 | 1423 |
Current Setting
Log
- Summer 2008, Init calibration
- Dec 02, 2008, Transverse Laser Absorption Calibration
- Try to rotate motor # 0338 and # 1474 to maximize absorption spectrum @ 795.1nm
- Condition: Transvers -; Spin -; 3x Comet Laser
- Result : Get maximize absorption peak @ 0338 = 3 (Degree, readback); 1474=-84 (Degree, readback)
- May 22, 2009; Recalibrate Motor #3 and #4 in lab. Their calibration angle kept unchanged. However, Auto calibration Error of motor #3 shifted from -1.5 to 0.2
Setting Table
| Motor ID | Controller ID | Description | Alignment Angle/Degree | Auto calibration Error/Degree | Spin Up Read Back/Degree | Spin Down Read Back/Degree |
|---|---|---|---|---|---|---|
| 1 | N/A | Not In Use | 8.4 | 0.15 | 8.25 | -81.75 |
| 2 | N/A | Not In Use | 8.5 | 0.40 | 8.10 | -81.90 |
| 3 | 0338 | Transverse S Wave | 7.5 | 0.2 | 7.3 | -82.70 |
| 4 | 1474 | Transverse P Wave | 8.8 | 0.00 | 8.80 | -81.20 |
| 5 | 1426 | Vertical S Wave | 10.8 | 0.40 | 10.40 | -79.60 |
| 6 | 1423 | Vertical P Wave | 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
Before May 22,2009
| Motor ID | Controller ID | Description | Alignment Angle/Degree | Auto calibration Error/Degree | Spin Up Read Back/Degree | Spin Down Read Back/Degree |
|---|---|---|---|---|---|---|
| 1 | N/A | Not In Use | 8.4 | 0.15 | 8.25 | -81.75 |
| 2 | N/A | Not In Use | 8.5 | 0.40 | 8.10 | -81.90 |
| 3 | 0338 | Transverse S Wave | 7.5 | -1.50 | 6.5 (Dec 02, 2008 re-calib) | -83.5 (Dec 02, 2008 re-calib) |
| 4 | 1474 | Transverse P Wave | 8.8 | 0.00 | 6.5 (Dec 02, 2008 re-calib) | -83.5 (Dec 02, 2008 re-calib) |
| 5 | 1426 | Vertical S Wave | 10.8 | 0.40 | 10.40 | -79.60 |
| 6 | 1423 | Vertical P Wave | 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.
Before Dec 2, 2008
| Motor ID | Controller ID | Description | Alignment Angle/Degree | Auto calibration Error/Degree | Spin Up Read Back/Degree | Spin Down Read Back/Degree |
|---|---|---|---|---|---|---|
| 1 | N/A | Not In Use | 8.4 | 0.15 | 8.25 | -81.75 |
| 2 | N/A | Not In Use | 8.5 | 0.40 | 8.10 | -81.90 |
| 3 | 0338 | Transverse S Wave | 7.5 | -1.50 | 9.00 | -81.00 |
| 4 | 1474 | Transverse P Wave | 8.8 | 0.00 | 8.80 | -81.20 |
| 5 | 1426 | Vertical S Wave | 10.8 | 0.40 | 10.40 | -79.60 |
| 6 | 1423 | Vertical P Wave | 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.
Currently Empty
