Basic steps
The discriminator C207 which control the LAC trigger is located in the CAMAC crate 1, slot 23.
The channels partecipating in the trigger are:
ch=0,1,2,3,4,5,6
- ch = 0 ----> PRODUCT * 5 [(LEFT*RIGHT PMTs
signals)*5] module 1
- ch = 1 ----> PRODUCT * 5 [(LEFT*RIGHT PMTs
signals)*5] module 2
- ch = 2 ----> (SUM - LEFT) *
5 module 1
- ch = 3 ----> (SUM - RIGHT) * 5 module 1
- ch = 4 ----> (SUM - LEFT) *
5 module 2
- ch = 5 ----> (SUM - RIGHT) * 5 module 2
- ch = 6 ----> SIGNAL FROM THE PULSE GENERATOR for the PEDESTAL
RUN
The procedure to set the threshold for the LAC trigger discriminator is the same used
for the C207 discriminators threshold setting/control used in the LAC electonics.
WARNING:
The value you write in the file is twice the actual value in the CAMAC C207
discriminator; so
to load say, 100 mV you have to write 200 !
Don't load more the 1000 mV, or the settings will be discarded !
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