- bsumma's home page
- Posts
- 2019
- 2018
- December (1)
- October (1)
- September (1)
- August (1)
- July (2)
- June (3)
- April (1)
- March (1)
- February (1)
- 2017
- 2016
- November (1)
- October (1)
- September (2)
- August (2)
- July (1)
- June (3)
- May (7)
- April (2)
- March (8)
- February (4)
- 2015
- 2014
- December (1)
- My blog
- Post new blog entry
- All blogs
LED Gains Run 16
Similar to what has been done in previous years (see for example Professor Heppelmann's page at https://drupal.star.bnl.gov/STAR/blog/heppel/2013/jun/19/ledtimedependence) we are interested in the time dependence of the FMS gain curves. This page presents a very brief look at LED curves for Run 16 thus far.
Info:
Days 70-80 (though power outage on day 73 causes large gap)
Runs 16070004-16080003 (44 runs in total)
Manual selection of around 160 cells; higher density of cells in NSTB 1 and 4 to get a feeling whether large/small was more effected (working on automated process to do all cells)
No Fitting Currently (will implement latter)
plot title: r(ROW NUMBER)_c(COLUMN NUMBER)_(NSTB-1)
I've prepared a short pdf below showcasing some typical cases, as well as all the cells I've done so far in case anyone is interested. The first few slides show common cases, followed by a zoom in onto days 71-72 to look for small trend, with the last couple of slides some outling cases
Things to note:
After recovery from power loss many of the cell's adc counts jumped, mostly by around 10-%20%, but with a fair number of larger jumps (even up to a factor of 2)
Decreases in adc counts seem slightly more common than increases, but not by much (though this is just an impression from running through all the plots)
Effects both large and small cells
Outside of power disruption, no clear trend as of yet; I'll get a better idea after fitting and with more data
- bsumma's blog
- Login or register to post comments