Deadtime for kinematic 1

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User name V. Sulkosky

Log entry time 17:28:41 on February 28, 2011

Entry number 349251

keyword=Deadtime for kinematic 1

Summary of deadtime measurements for N-Delta kinematic 1:

Run    Current [uA]      Deadtime [%]   T5 rate [kHz]    Comments
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2055      45                 61             4.6           Threearm
2056      31                 44             2.1           Threearm
2057      20.5               25             0.98          Threearm
2058      19.8               21             0.91          dThresh2arm
2059      15                 15             0.55          dThresh2arm

To get reasonable deadtime ~ 15%, we dropped the BB/HAND crates and went
to the 'dThresh2arm' configuration. That only improved the deadtime by
about 20% (4% absolute). We then lowered the current to 15 uA. We
might be able to double the current if we buffer the DAQ. That will probably
require a few hours of work in the hall to gather the busy signals.

A copy of this log entry has been emailed to: kalyan,doug,danez,sparveri