Difference between revisions of "20200410-PREX2-Analysis"
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== Agenda == | == Agenda == | ||
| − | # Tao - Summary of pairsynch pickup | + | # Tao - Summary of pairsynch pickup [[http://ace.phys.virginia.edu/HAPPEX/4069 HAPLOG 4069]] |
#*TY: pairsync pickup should be canceled out: KP: we also have multiplet sync that can appear. | #*TY: pairsync pickup should be canceled out: KP: we also have multiplet sync that can appear. | ||
#*TY: we don't see it in batteries in detector hut or CH. KP: ususal signal amplitude is around 3 V for BPM and BCM. | #*TY: we don't see it in batteries in detector hut or CH. KP: ususal signal amplitude is around 3 V for BPM and BCM. | ||
| + | #*KP: Also the blue and red curve in regressed left and right detectors are asymmetric. The pickups have different signs and amplitude. My best guess is position and energy cancellation is asymmetric between left and right arms. | ||
#*KP: for BCM noise, it could be Pockel cell history effect as well. | #*KP: for BCM noise, it could be Pockel cell history effect as well. | ||
#*KP: a false pickup in BPM can dilute regression slope. What about dithering? TY: will add them | #*KP: a false pickup in BPM can dilute regression slope. What about dithering? TY: will add them | ||
| Line 25: | Line 26: | ||
#** BPM wiresums asymmetries | #** BPM wiresums asymmetries | ||
#** cross comparison between beamline monitors: eg. bcm double-diff | #** cross comparison between beamline monitors: eg. bcm double-diff | ||
| − | # Devi - Summary of plots available for At detector asymmetry | + | # Devi - Summary of plots available for At detector asymmetry [[http://ace.phys.virginia.edu/HAPPEX/4068 HAPLOG 4068]] |
#* Have plots ready. | #* Have plots ready. | ||
#* KK : we can discuss this over the weekend. | #* KK : we can discuss this over the weekend. | ||
Latest revision as of 15:26, 10 April 2020
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Agenda
- Tao - Summary of pairsynch pickup [HAPLOG 4069]
- TY: pairsync pickup should be canceled out: KP: we also have multiplet sync that can appear.
- TY: we don't see it in batteries in detector hut or CH. KP: ususal signal amplitude is around 3 V for BPM and BCM.
- KP: Also the blue and red curve in regressed left and right detectors are asymmetric. The pickups have different signs and amplitude. My best guess is position and energy cancellation is asymmetric between left and right arms.
- KP: for BCM noise, it could be Pockel cell history effect as well.
- KP: a false pickup in BPM can dilute regression slope. What about dithering? TY: will add them
- TY: bpm4eY also show differences between polarities
- PK: Because of the 45 degree rotation, pos Y readout may pickup more.
- Check list: to trace down the source of pick-up
- averages by polarity from corrections
- beam-off pedestal noise in main detectors
- BPM wiresums asymmetries
- cross comparison between beamline monitors: eg. bcm double-diff
- Devi - Summary of plots available for At detector asymmetry [HAPLOG 4068]
- Have plots ready.
- KK : we can discuss this over the weekend.
Analysis projects
- BCM double difference study
- BPM resolution
- Pedestal / Normalization BCM history
- Events/ Patterns Counter
- Dithering sensitivity/Quality re-check
- Grand statistics re-check
- Linearity check
Present
Kent P, Adam Z, Amali P, Bob M, Brian Q, Cameron C, Carrington M, Caryn P, Chandan G, Ciprian G, Devi A, Dmitrii N, Don J, Dustin M, Guido U, Hanjie L, Iris H, Jim N, Juan Carlos C,Krishna K, Paul K, Paul S, Ryan R, Sanghwa P, Sakib R,Siyu J, Victoria O, Weibin Z, Ye T, Yufan C
