IAS: D. Cook, J. Oberling
We continued with the cartridge alignment today, finishing up the final tweaks. The final CP alignment is:
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ITMy/CPy Gap: 20.35 mm
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Target: 20 mm
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Tolerance: ±0.25 mm
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A verbal waiver on the 0.1 mm out-of-spec on the gap was given by N. Robertson, since this is not the final CP (there will be a switch at a later date)
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CPy Pitch: 1.16 mrad down
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Target: 1.33 mrad down
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Tolerance: ±1.4 mrad
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CPy Yaw: 582 µrad CCW
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Target: 0.0 mrad
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Tolerance: ±1.4 mrad
This puts the CPy alignment within spec, so we then double checked the pitch/yaw of the ITMy to make sure our CPy tweaks did not disturb the previous ITMy alignments:
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ITMy Pitch: 29 µrad down
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Target: 12.5 µrad up
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Tolerance: ±160 µrad
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ITMy Yaw: 7 µrad CW
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Target: 0.0 mrad
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Tolerance: ±160 µrad
The ITMy pitch/yaw is still well within spec, so this completes IAS work on the BSC1 cartridge. Doug then centered all the OSEMs, and we left the damping ON for both chains.