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Task #745

open

HMS Optics calibration

Added by Julie Roche 11 months ago. Updated about 1 month ago.

Status:
In Progress
Priority:
High
Start date:
05/24/2023
Due date:
% Done:

50%

Estimated time:

Description

Status as of 05/24: Two students from Dipangkar Dutta are working with Holly and Mark J. on this


Files

NPS_HMS_InelasticRates_MC.xlsx (17 KB) NPS_HMS_InelasticRates_MC.xlsx Erik Wrightson, 07/12/2023 04:17 PM
Actions #1

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.

Actions #2

Updated by Alexandre Camsonne 11 months ago

  • Assignee set to Erik Wrightson
Actions #3

Updated by Alexandre Camsonne 9 months ago

  • Status changed from New to In Progress
Actions #4

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)

Actions #5

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.

Actions #6

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

Actions #7

Updated by Alexandre Camsonne 8 months ago

  • Assignee changed from Erik Wrightson to Christine Ploen
Actions #8

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

Actions #9

Updated by Alexandre Camsonne 4 months ago

  • Priority changed from Normal to High
Actions #10

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

Actions #11

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

Actions #12

Updated by Alexandre Camsonne about 1 month ago

data seems consistent with Jacob's matrix

Actions #13

Updated by Alexandre Camsonne about 1 month ago

Can check optics from already replayed data

Actions #14

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

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