Difference between revisions of "20210120-Optics-Mtg"
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Time: 3-4pm EST | Time: 3-4pm EST | ||
Toll-Free Number (U.S.& Canada): 888-240-2560 | Toll-Free Number (U.S.& Canada): 888-240-2560 | ||
| − | PARTICIPANT CODE: # | + | PARTICIPANT CODE: # 983 216 220 |
Room IRL: <none> | Room IRL: <none> | ||
https://bluejeans.com/983216220 | https://bluejeans.com/983216220 | ||
== Agenda == | == Agenda == | ||
| − | # Siyu status of optics DB optimization | + | # Siyu: status of optics DB optimization [http://ace.phys.virginia.edu/HAPPEX/4441 haplog:4441] |
| − | # | + | # Hanjie: PREX-2 acceptance function check [http://ace.phys.virginia.edu/HAPPEX/4439 haplog:4439] |
== Minutes == | == Minutes == | ||
| + | |||
| + | # Siyu showed progress on the optimization - the fact that the central hole is not aligned to the HRS central ray introduces an effective deviation in the definition of the focal plane variables. Correcting y_fp and phi_fp for this is an important first step. Results of the optimization after this correction are not good, but this could be due to over or under fitting and requires some tweaking to the fit procedure or parameters used. | ||
| + | # Hanjie found a result about 2% below the average A_pv that Chuck reports when using our acceptance function. We should check this definition as well. Perhaps someone made an off-by-one error in a loop (if so seems surprisingly large, we could test this numerically in any case) , or maybe something more conceptual is going on. Cip will try to get a cross-check and then get back to Chuck to get more information. | ||
== Attendence == | == Attendence == | ||
| + | |||
| + | Bob, Hanjie, Siyu, Chandan, Ryan, Nilanga, Sanghwa, Cip, Kent and maybe some others I may have missed. | ||
Latest revision as of 14:54, 20 January 2021
Back to Main Page >> HRS_Optics_Mtg
previous meeting << >> following meeting
Logistic information
Time: 3-4pm EST Toll-Free Number (U.S.& Canada): 888-240-2560 PARTICIPANT CODE: # 983 216 220 Room IRL: <none> https://bluejeans.com/983216220
Agenda
- Siyu: status of optics DB optimization haplog:4441
- Hanjie: PREX-2 acceptance function check haplog:4439
Minutes
- Siyu showed progress on the optimization - the fact that the central hole is not aligned to the HRS central ray introduces an effective deviation in the definition of the focal plane variables. Correcting y_fp and phi_fp for this is an important first step. Results of the optimization after this correction are not good, but this could be due to over or under fitting and requires some tweaking to the fit procedure or parameters used.
- Hanjie found a result about 2% below the average A_pv that Chuck reports when using our acceptance function. We should check this definition as well. Perhaps someone made an off-by-one error in a loop (if so seems surprisingly large, we could test this numerically in any case) , or maybe something more conceptual is going on. Cip will try to get a cross-check and then get back to Chuck to get more information.
Attendence
Bob, Hanjie, Siyu, Chandan, Ryan, Nilanga, Sanghwa, Cip, Kent and maybe some others I may have missed.
