[Halld-level1] [New Logentry] BCAL trigger calibration

[somov at jlab.org]

Logentry Text:
--
The BCAL trigger was tested yesterday. From the first glance, the 
performance looks Ok. More time is indeed neded for detailed
testing. I used the BCAL stand alone configuration in order to be
able to check the high-rate performance. Some calibration files
are located in 
BCAL/data/all_cosmic/bcal_cosmic_NN.0

In short, it would make sense to start with the following thresholds:
fadc_thr = 120 (150)
global_en thr = 1500 (2000)

Data was taken using the beam current of ~50 nA and 5x10^-5 radiator.

Rates for various thresholds are listed below:

fadc_thr    global_en     Rate beam        Rate no beam

120           800           5 kHz   (run 13)        820 Hz 
150           800           2.9 kHz (run 12)       
200           800           1.3 kHz (run 11)

120           2000         1.2 kHz  (run 45)      700 Hz (run 50) 
150           2000         700 Hz   (run 46)      440 Hz (run 49)    
200           2000         300 kHz  (run 47)     100 Hz (run 48)

120           3000         1 kHz   (run 40)        700 Hz (run 37)
150           3000         500 Hz  (run 42)       300 Hz   
200           3000         180 Hz  (run 38)       60  Hz (run 35)

120           4000                                          690 Hz (run 52)
150           4000                                          230 Hz (run 53)
200           4000                                          50 Hz  

120           5000         800 Hz                      600 Hz 
150           5000         280 Hz                      140 Hz           
200           5000                                           30 Hz

120           8000         400 Hz                       300 Hz  
200           8000         80 Hz                         20 Hz

------------


120           800            5 kHz                820 Hz
120           1200          3.5 kHz             700 Hz
120           1500          3 kHz                700 Hz
120           2000          1.2 kHz             700 Hz
120           2500          1 kHz                700 Hz
120           3000          1 kHz                700 Hz
120           5000          800 Hz              600 Hz
120           8000          400 kHz            300 Hz


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