2017-10-10 physics-shifter » History » Version 1
Boyd, Steven, 09 October 2017 16:39
| 1 | 1 | Boyd, Steven | h1. Physics shifter report (from C. Rogers) |
|---|---|---|---|
| 2 | |||
| 3 | * Following various studies and discussion at CM49, current working |
||
| 4 | hypothesis is that the "50 MeV/c" momentum bump arises from changes to |
||
| 5 | the track fitting. This represents about 10 % inefficiency in TKD. It is |
||
| 6 | probably not related to hardware issues. |
||
| 7 | * Chris Hunt (who is the present physics shifter) did the study that |
||
| 8 | demonstrated SSD M2 had incorrect polarity. I don't know if he has |
||
| 9 | checked for the current settings that were in on Sunday. |
||
| 10 | * I did have a quick look at some data from Sunday morning and I didn't |
||
| 11 | see any problems, beyond the known issues. |