RPC'S MUON TRIGGER

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RPC'S MUON TRIGGER IN LAST DAYS OF CRUZET
(preliminary)? M. Gorski, Warsaw for the RPC
team Topics 1) Status of the RPC chambers 2)
Status of the muon trigger
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Status of the RPC chambers
Green 4 wheels with HV/LV on Readout and
trigger in four towers only
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Current values stable in time
One sector an example, 4 days peaks ramping
up chambers
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Gas system operation of all wheels stable with
final system in closed mode only one stop because
of liquid mass flow control failure
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Status of the trigger electronics Problems
encountered since some time Resetting of LBOX
FPGAs Errors in readout Spikes in trigger rate
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New firmware for FPGAs produced and
installed turnaround of updating - basically 1
update/day due to - long VHDL compilation and
- long reloading procedure Data taking with
Minidaq started Friday 11.07
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RPC TRIGGER RATE VS TIME
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BX DISTRIBUTIONS FOR RPC'S
3 CHAMBERS
4 CHAMBERS
5 CHAMBERS
6 CHAMBERS
TRIGGER FROM RPC'S ONLY
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BX DISTRIBUTION FROM RPC'S
4 CH.
3 CH.
6 CH.
5 CH.
NON-RPC TRIGGER
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No readout errors encountered, No nonexistent
partitions present
More work needed on synchronization Further
checks on system stability Inclusion of endcaps