Difference between revisions of "HRRL Alignment 2011"
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# Align laser through HRRL entrance and exit. | # Align laser through HRRL entrance and exit. | ||
| − | # place | + | # place a translator for the rotation mirror (it should span from D1 to the 90 degree point along the zero axis) |
| − | # move translator along HRRL direction and position until laser spot doesn't move out of two Iris's at limits of translator breadboard. | + | # mount the mirror so it is level on the translator |
| + | # move the translator along HRRL direction and position the mirror until laser spot doesn't move out of two Iris's at limits of translator breadboard. | ||
# Now you are aligned along the HRRL axis | # Now you are aligned along the HRRL axis | ||
| − | # | + | # Rotate the mirror 45 degrees |
| − | |||
# Move along the translator to center the laser as much as possible through the experimental cell wall. The 90 degree bend is now defined | # Move along the translator to center the laser as much as possible through the experimental cell wall. The 90 degree bend is now defined | ||
# Move the 45 degree mirror on the translator stage to the location of D1's center | # Move the 45 degree mirror on the translator stage to the location of D1's center | ||
Revision as of 22:23, 1 April 2011
Alignment
Timeline
| Completion Date | Task |
| 4/29/11 | remove HRRL Gun |
| 5/2/2011 | Install alignment laser( Khalid's 2'x3' table in HRRL doorway) |
| 5/3/2011 | Install rotation and translation stages |
| 5/9/2011 | Align zero degree beam line |
| 5/12/2011 | Align 45 degree beam line |
| 5/13/2011 | Align 90 degree beam line |
Procedure
2 translators, one at least X feet. The long one is on the bottom and used to move a mirror from the zero port along the beamline to the expeimental celll. The second one is short and mounted on top of the long one. This will move along the HRRL axis
- Align laser through HRRL entrance and exit.
- place a translator for the rotation mirror (it should span from D1 to the 90 degree point along the zero axis)
- mount the mirror so it is level on the translator
- move the translator along HRRL direction and position the mirror until laser spot doesn't move out of two Iris's at limits of translator breadboard.
- Now you are aligned along the HRRL axis
- Rotate the mirror 45 degrees
- Move along the translator to center the laser as much as possible through the experimental cell wall. The 90 degree bend is now defined
- Move the 45 degree mirror on the translator stage to the location of D1's center
- Move the other 45 degree mirror from the zero line alone the 90 degree line to the location of D2
- Be sure the laser shines back to the center of the Gun location
- Positron mirror at D2 which aligns everything up will tell you the location of D2.
- once the location of D2 is established, the location of D1 will be known.
- Remove the Mirror at D1 and center the flag location F1 so the OTR screen is centered
Should we increase the dipole gap? From 3/4" to what?
Equipment
Precision Rotation Stage
Thor Labs 1 arc sec resolution, 5 arc min accuracy, Rotator $2425, APT controller $1600,
Elliot Scientific Manual rotation, 5 arc sec resolution, $600
Primatics 50 arc sec accuracy, $11k
- Khalid's laser table 2' x 3' I