Difference between revisions of "20180424-Optics-Mtg"
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== Agenda == | == Agenda == | ||
| + | [https://prex.jlab.org/cgi-bin/DocDB/private/ShowDocument?docid=137 Optics] | ||
| + | [https://prex.jlab.org/DocDB/0001/000138/001/acceptance_and_tune.pdf g4hrs update] | ||
| + | == Minutes == | ||
| + | * Tyler review collimator | ||
| + | ** Width of >8cm has diminishing returns on dR/R | ||
| + | ** Bottoming at out ~1.25% on dR/R with 2% systematic on A, 85% polarization | ||
| + | ** Getting 750MHz in single arm | ||
| + | ** Noticed that PREX-II proposal considered 925-1000 MeV beam and had 0.8% - likely the difference | ||
| + | ** Will look at trying to change collimator to smaller Q2 at expense of central angle | ||
| + | ** HPS will have sensitivity to our selected beam energy | ||
| − | + | * Ryan looking at transport and FP systems | |
| + | ** Data look inconsistent as we understand transformation | ||
| + | ** Will look at in code with Seamus over next week | ||
| + | ** x offsets not understood either, likely just fot out | ||
| + | *** Dipole not set correctly? | ||
Latest revision as of 09:03, 25 April 2018
Back to Main Page >> HRS_Optics_Mtg
previous meeting << >> following meeting
Logistic information
BlueJeans calling instructions: Toll-Free Number (U.S.& Canada): 888-240-2560 International toll number: 408-740-7256 PARTICIPANT CODE: #9989030149 Room IRL: <none>
Agenda
Minutes
- Tyler review collimator
- Width of >8cm has diminishing returns on dR/R
- Bottoming at out ~1.25% on dR/R with 2% systematic on A, 85% polarization
- Getting 750MHz in single arm
- Noticed that PREX-II proposal considered 925-1000 MeV beam and had 0.8% - likely the difference
- Will look at trying to change collimator to smaller Q2 at expense of central angle
- HPS will have sensitivity to our selected beam energy
- Ryan looking at transport and FP systems
- Data look inconsistent as we understand transformation
- Will look at in code with Seamus over next week
- x offsets not understood either, likely just fot out
- Dipole not set correctly?
