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Event Log
- May/5:
- Plugged in the beam trigger BNC cable to the TLU PMT trigger and ready for beam.
- MCC complained not all doors were shut. Both small door and the fence gate in the ESA entrance alley need to be closed. Hall light all went dark after doors closed. Tonee brought back tunnel lights from MCC upon seeing our E-mail, so we can now see all the web cams again.
- First attempt to send beam. Tonee tuned to ~4 electrons/crossing with 11 GeV beam @5Hz.
- Starting Caladium position was close to be centered vertically but ~10cm off horizontally (towards ESA entrance side). Mike helped to get the position adjustments with his new Beckoff 26 (B061 Calladium) panel (Motors section). Moved at ~10mm steps to "RBV from step: 101.72mm" (with >) which the overhead CAM05 shows is moving away from ESA entrance as hoped.
- Mike set the trigger to chan 7 (ESA User 3 TTL) initially but that didn't trigger EUDAQ. He switched that cable to chan 10 (Silicon Tracker - Calladium (NIM)) and used the last Jan/2016 setting of width=200, delay=-104950. This got beam triggers going in EUDAQ and datataking with ni_coins.cfg now getting real beam hits on Calladium.
- Run 148-150 showing a rectangular beam spot width of (DX,DY) ~ (120,230) which is ~(2mm,4mm). (MIMOSA has 18.4um square pixels with X,Y range 1152,576). The centroid of the front 3 planes are at (180,280), and the back 3 planes are at (330,140). The front and back plane groups are ~70cm apart in Z. The tilt is (+150,-140) or (2.8mm,-2.6mm), which is ~4mrad tilt. There is no vertical tilt adjustment but there is a manual knob for horizontal tilt (around Y-axis).
- Stopped Run 150. Attempt to move telescope. Y fine abs position 45.0->43.7mm. X fine 65.0->59.5mm these didn't matter (they are for DUT only). Coarse Y set=0. bottomed out but still not quite low enough. Coarse X abs pos 100 to 96.