Difference between revisions of "CDC gain calibrations"

Revision as of 14:31, 24 June 2016

Early runs 10391-10913

• fadc thresholds were high and for runs with high atmospheric pressure the minimum ionizing peak in pulse amplitude was partly or mostly below threshold
• Chose straws 501-510 as these had high gain and their MIP was visible in most runs, found the scaling factor to match their MPV for the run of interest to run 11059, scaled the individual gains for run 11059 to give gains for the run of interest. Chose run 11059 as it was the next run after the thresholds had been adjusted.

Pressure during runs 10331-10913. Circled runs selected for calibration.

Temperature during runs 10391-10913

run11059 amplitude
run10391 amplitude	run10518 amplitude	run10562 amplitude
run10564 amplitude	run10780 amplitude	run10837 amplitude

MIP MPV vs pressure

MIP MPV vs pressure/temperature

Disconnected straws: 709, 2384, runs 10331 on.

Other missing straws:

straw 3150 runs 10455-11059
straw 3151 runs 10331-11059

straws 21-25, 62-67, 110-116, 164-169 (HVB A5) runs 10392-10399

straws 2392-2399 runs 10455-10464  (HVB I8 and another)
straws 2575-2582 runs 10455-10464
straws 2760-2767 runs 10455-10464
straws 2957-2964 runs 10455-10464
straws 3157-3164 runs 10455-10464
straws 3366-3373 runs 10455-10464

50 straws missing from 10518 which was not approved but was interesting for the low pressure

straw 2384-2391 run 10518 (not approved, but interesting for the low pressure)
straw 2567-2574 run 10518
straw 2751-2759 run 10518
straw 2950-2956 run 10518
straw 3149-3156 run 10518
straw 3358-3365 run 10518

straw 2873 missing in 011059
straw 2964 missing in 011059
straw 3372 missing in 011059

Low gain straws:

straw 244  runs 10331-11059 
straw 1391 runs 10391-
straw 2977  runs 10331-11059 
straw 3178  runs 10331-11059 
Low-gain HVB group 3064-3070 
Low-gain HVB group 3270-3277
Low-gain HVB group 3479-3486