Task #745
openHMS Optics calibration
50%
Description
Status as of 05/24: Two students from Dipangkar Dutta are working with Holly and Mark J. on this
Files
Updated by Alexandre Camsonne 11 months ago
Information about optics from Tanja
Unless the kinematics are different from those that have already been investigated:
https://hallcweb.jlab.org/wiki/index.php/12_GeV_HMS_Optics_Data
additional optics data may not be necessary. However, sieve runs for each kinematic setting could be beneficial. For completeness, here is the page with optics information for both spectrometers:
https://hallcweb.jlab.org/wiki/index.php/Main_Page#Spectrometer_Optics.
Updated by Alexandre Camsonne 9 months ago
- Status changed from New to In Progress
Updated by Alexandre Camsonne 9 months ago
- % Done changed from 0 to 50
was added to the group
need to setup replay environment
spreadsheet for counting rates available ( put link here)
Updated by Erik Wrightson 9 months ago
Wiki link to the rough optics target estimates for the HMS: https://hallcweb.jlab.org/wiki/index.php/NPS_Run_Plan_(2023)
Also attached here.
Updated by Alexandre Camsonne 9 months ago
Updated scripts to use the y mispointing value
New BPM values , induces a 2.4 mm shift at sieve
redoing x cuts
Updated by Alexandre Camsonne 8 months ago
- Assignee changed from Erik Wrightson to Christine Ploen
Updated by Alexandre Camsonne 8 months ago
Making progress, figured out offset seen by Mark.
Can replay previous experiment data, and checking optimization of coefficients. Seem to work
Updated by Alexandre Camsonne about 2 months ago
Hi, Christine, could you post an update ? Even just a few lines is fine.
I guess main question is "is HMS optics affected by sweeping magnet?"
Thank you
Updated by Alexandre Camsonne about 1 month ago
Getting all missing runs needed ( carbon targets missing ) - check if we can do the missing runs - making a list of data to take
checking if magnet on and off can be combined
6.67 settings created
Sebastian working on y_p target cut
settings assigned to each person
Updated by Alexandre Camsonne about 1 month ago
data seems consistent with Jacob's matrix
Updated by Alexandre Camsonne about 1 month ago
Can check optics from already replayed data
Updated by Alexandre Camsonne about 1 month ago
Took additionnal optics data
some shift seen, compared to fall
might need to look at BPM calibration
small offset
continued through run plan until 6 AM
data sweeper on and off taken - seems not much difference
Full set of optics at 15.95
good sieve hole count for optimization