Home » Groups » STAR Protected

Radial Occupancy

Updated on Tue, 2013-05-21 14:20. Originally created by dolv719 on 2013-05-21 13:31.

The goal of this blog is to investigate the occupancy of the Fgt in the radial direction.  I want to see if the dead spots are common across runs or just an random thing that depends on the behavior of the detector at the time.

It's expected that the occupancy will decrease as the radius increases
I am considering dead spots as areas of almost zero occupancy reading and not areas of just "low" occupancy.

Summary of "known" dead sponts.  Defining a known dead spot that is common to both runs. Note both runs are before 1CD problem.
Devika's list of bad APVs: drupal.star.bnl.gov/STAR/blog/devika/2013/may/02/jplotsqasummary
Disk 1
A: 31.5-33.5
B: None
C: None
D: None

Disk 2
A: 11-17
B: None
C: 21-24 & 34-36
D: 29-31.5

Disk 3
A: 16.5-21 & 27-29
B: 16.5-21 & 31.5-33
C: 19-26 & 29-31 & 34-36
D: Too Few Events
 
Disk 5
A: 29-35?
B: 17-24 & 33.5-36
C: None
D: 16-21?

Disk 6
A: 31.5-33.5
B: None
C: Masked Out
D: 24-27

For run  14109022 consists of 3701 FGT events.
Disk 1
A: 31.5-33.5
B: None
C: None
D: None

Disk 2
A: 11-17
B: None
C: 21-27 & 34-36
D: 29-31.5

Disk 3
A: 16.5-21 & 27-29
B: 16.5-21 & 31.5-33
C: 19-26 & 29-31 & 34-36
D: None, but few entries

Disk 4
Low Statistics, hard to get any kind of meaningful information

Disk 5
A: 29-35?
B: 17-24 & 33.5-36
C: None
D: 16-21?

Disk 6
A: 31.5-33.5
B: None
C: Masked Out
D: 24-27

For run 14122014 with 1209 FGT Events
Disk 1
A: 31.5-33.5
B: None
C: None
D: None

Disk 2
A: 11-17
B: None
C: 20.5-24 & 29-31 & 34-36
D: 29-31.5

Disk 3
A: 16.5-21 & 27-29
B: 16.5-21 & 31.5-33.5
C: 19-26 .5 & 29-31 & 34-36
D: Too Few Events

Disk 4
Low Statistics, hard to get any kind of meaningful information

Disk 5
A: 29-35?
B: 17-24 & 29-31.5 & 33.5-36
C: None
D: 16-21?

Disk 6
A: 31.5-33.5
B: Too Few Events
C: Masked Out
D: 24-27

Groups: