Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Add additional optical effects to RICH aerogel tiles and mirrors #229

Merged
merged 34 commits into from
Oct 22, 2024
Merged

Add additional optical effects to RICH aerogel tiles and mirrors #229

merged 34 commits into from
Oct 22, 2024

Conversation

cpecar
Copy link
Contributor

@cpecar cpecar commented Apr 16, 2024

The current implementation of the RICH geometry uses largely ideal versions of the aerogel tiles and mirrors. This PR will introduce:

  1. Rayleigh scattering in the aerogel tiles, which is significant for twice-reflected photons (scattering length taken from measurements of scattering length done prior to RICH installation)
  2. Surface roughness for aerogel and mirrors, tuned to match the angular resolution we see in real RICH data

Connor Pecar and others added 29 commits April 16, 2024 12:03
Add aerogel Rayleigh scattering (scattering length from RICH aerogel …
22684d9 
…passports) and aerogel roughness (currently tuning to angular resolution in data)
add some roughness to planar mirrors
a59c752
planar mirrors now ground, specular spike probability 1.0 with some v…
f4622bb 
…alue for sigmaAlpha
100% specular lobe reflection for planar mirrors, with sigmaAlpha=0.05
bfa7549
make spherical mirrors 100% specular lobe reflection. set sigmaAlpha=…
fc55a28 
…0.25 mrad for all mirrors)
Return to using passport values for module1 aerogel refractive indices
fe25119
Aerogel sigmaAlpha to 20 mrad (based on measurements pre-installation…
0a2a951 
…); First estimate of Mie scattering parameters, only forward scattering, 20% of photons scattered in 3cm aerogel, 1mrad average scattered angle
Make gemc naming convention for spherical mirrors consistent with off…
d92bafe 
…icial naming. Load independent reflectivity parameters for each spherical and planar mirror (from module2 measurements)
units for photon energy, and use arrayToString
e57b69d
Use average measurements for sector 4
29f078b
32 aerogel tiles in sector1 RICH layer 204
a18bb4f
Aerogel sigmaAlpha set to RMS from pre-installation measurements
2f91965
Settled default aerogel roughness: 20mrad
1dc918e
Mie scattering g-factor=0.999
f8272ac
Make spherical mirrors ground
441c832
layer 204 always 32 tiles; delete old unused function
6744edd
Comment on digitization parameters
64612ab
Remove unused default aerogel function
987f776
Remove unused utils include
1d8dea5
update mie scattering length
cf3fcb0
clarity units in module 2 passports were off by order of magnitude
e055e43
Re-factoring: for each variation, store list of sectors, where index …
423b567 
…is module. Make suffix of volume names use module number. (and some general cleanup/removal of unused old functions
Clean up optical effect calculations; correct mie scattering length
30d14c8
Fix scattering length calculation
38e010d
Stop tracking unused files
4e78fc8
Fix: return to sector in identifiers list
549706b
supply sector number where needed
aa100ce
Remove unused function
6d0dd2d
Disable local copy of mother STL file (updated version now included i…
d842c9c 
…n coatjava)
@cpecar cpecar marked this pull request as ready for review October 15, 2024 17:08
@maureeungaro maureeungaro merged commit 60a4eea into gemc:main Oct 22, 2024
This was referenced Oct 22, 2024
Closed
Closed
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Reviewers
No reviews
Assignees
No one assigned
Labels
None yet
Projects
None yet
Milestone
No milestone
Development

Successfully merging this pull request may close these issues.
2 participants
@cpecar @maureeungaro