[Primexd] [Revised Logentry] PrimEx production on Be target

somov at jlab.org somov at jlab.org
Tue Feb 26 01:25:04 EST 2019


Logentry Text:
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We are taking data on Be target. 

Beam conditions: 10^-4 X0 amorphous radiator, 200 nA beam current, 750 um Be converter

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

DAQ configuration: 

SETUP: hd_all.tsg_ccal_prod
CONFIG: CCAL_FCAL_PS_m9.conf

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


Trigger: 

Bit 0:  CCAL & FCAL >~ 3 GeV    (28 kHz)

Bit 3:  PS                                      (6 kHz)

FP triggers (see Fig. 1):

Bit 3:             FCAL LED   (10 Hz)
Bit 5:             CCAL LED  (100 Hz)
Bit 6:             CCAL Alpha source (120 Hz)
Bits 9 & 10:   BCAL LED (10 Hz)
Bit 12:           "Random"  (100 Hz)

The total trigger rate is about 35 kHz. Live time 98.9 %.
Data rate 120 Mbps.

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

The magnetic field of the PS magnet was reduced to about 1.44 T, corresponding to the current 
of 850 A (the default current is 910 A).

Current run 61321.





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