Pibeta trigger electronics March 2000

In March 2000, a new trigger has been added to the LB500 logic, which is sensiteive to back-to-back particles like our pibeta trigger. Instead of requireing two hits above the high threshold, it requires one hit above the high threshold and one above the low threshold, and therefore suited for pi->e nu gamma and similar processes.

The cabling has not been touched and stays the same as for the August 1999 trigger. Only the LB500 units have been reprogrammed for the new trigger. Click on one of the green units below to see the new internal programming.

lb500_pb lb500_pb lb500_pb

S. Ritt, March 22nd, 2000