Grating Turret Test Data

Bulletin

• 5:37pm August 3, 2009: Reliability script test complete with 200 moves no errors.
• 9:52am August 4, 2009: Vacuum leak occurred in test chamber. Mechanism warmed up over night currently at ~230K.
• 10:19am August 6, 2009: Mechanism is in transition to 120K. Currently at ~220K.

Test Information

• Switch Locations and Configurations

Repeatability Data

• grating_repeat_080309

Data taken with the optical axis of the grating turret perpendicular wrt gravity. Grating turret was moved between the primary and secondary grating positions a total of 20 times. Recorded positions are in units of [mm] taken at a time interval of 1[s] per scan. Second data column is the proximity sensor on the grating side and the third data column is the proximity sensor on the imaging mirror side. Test was started at 1:23pm and completed at 3:05pm on August 3, 2009. More details in [Mechanisms Logbook 1 page 79].

Reliability Data

• data090803

Data taken with the optical axis of the grating turret perpendicular wrt gravity. Grating turret was moved between the primary and secondary grating positions a total of 200 times. No reported errors. Test was started at 10:06am and completed at 11:40am on August 3, 2009. More details in [Mechanisms Logbook 1 page 78].

• data080309b

Data taken with the optical axis of the grating turret parallel wrt gravity. Grating turret was moved between the primary and secondary grating positions a total of 200 times. No reported errors. Test was started at 4:03pm and completed at 5:37pm on August 3, 2009. More details in [Mechanisms Logbook 1 page 80].

Grating Temperature Data

• Grating_Cool_Down_Data_111908.dat

Data was taken on October 29, 2008 through November 19, 2008. File contains the temperature readings over 22 days while the mechanisms transfered from 300K to 120K and back to 300K.