Task #551

RF time for SHMS PID

Added by Richard Trotta 3 months ago. Updated about 1 month ago.

Status:ResolvedStart date:08/01/2020
Priority:NormalDue date:08/15/2020
Assignee:Stephen Kay% Done:

100%

Category:-
Target version:-

Proton_RF_Timing.ods (14.5 KB) Stephen Kay, 08/31/2020 06:37 PM

2ns_RF.png (62.6 KB) Stephen Kay, 08/31/2020 06:44 PM

4ns_Bad_RF.png (80.7 KB) Stephen Kay, 08/31/2020 06:44 PM

4ns_Good_RF.png (81.9 KB) Stephen Kay, 08/31/2020 06:44 PM

History

#1 Updated by Stephen Kay 3 months ago

  • % Done changed from 0 to 80

RF offsets set for all Kaon runs and uploaded to the UTIL_PROTON repo - I'll update the UTIL_KAONLT repo too with the new timing parameters file.

I'll add some documentation and my spreadsheet for this too.

2ns runs don't look promising in terms of using the RF time for PID. Similarly, some early (Sept/Oct 2018) runs don't look very useful either.

#2 Updated by Stephen Kay 3 months ago

.ods of Proton RF timing attached. I processed each kinematic and examined the position of the RFCutDist peak. This should be centred at 2 for 4ns bunch spacing runs and at 1 for 2ns bunch spacing runs.

Also attached are some examples of the RF timing, two cases with 4ns and one with 2ns. Shown in purple is the full distribution with no cuts applied. Shown in red is the distribution for protons (PID applied) with no RF timing cut. Blue is with both PID and RF timing cuts applied. The kinematic is shown at the top of the image.

In the "4ns_Good_RF" image, it is clear that the particles that pass the proton PID cuts lie in the distinct second peak. In the 2ns and "4ns_Bad" cases there is no such distinction however.

#3 Updated by Stephen Kay about 1 month ago

  • % Done changed from 80 to 100

#4 Updated by Stephen Kay about 1 month ago

  • Status changed from In Progress to Resolved

Also available in: Atom PDF