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Entry  Thu Oct 14 15:19:00 2021, Keita Mizukoshi, livetime (or deadtime) of DRS4 evaluation board 
    Reply  Thu Oct 14 15:25:07 2021, Stefan Ritt, livetime (or deadtime) of DRS4 evaluation board 
       Reply  Thu Oct 14 18:03:52 2021, Keita Mizukoshi, livetime (or deadtime) of DRS4 evaluation board 
          Reply  Thu Oct 14 18:42:31 2021, Stefan Ritt, livetime (or deadtime) of DRS4 evaluation board 
             Reply  Fri Oct 15 06:15:53 2021, Keita Mizukoshi, livetime (or deadtime) of DRS4 evaluation board 
Message ID: 839     Entry time: Thu Oct 14 18:03:52 2021     In reply to: 838     Reply to this: 840
Author: Keita Mizukoshi 
Subject: livetime (or deadtime) of DRS4 evaluation board 

Thank you very much for your response.
Excuse me for my very stupid confirmation.
If I take N events finally and the hardware scaler value is M, the livetime is realtime*(N/M). Is this correct?

Stefan Ritt wrote:

The one thing you can do easily is to look at the scaler values. If one channel counts all physical events, and you have all read out events, then the ratio give you the live/deadtime. The hardware scalers also keep running during the DRS readout.

Stefan

Keita Mizukoshi wrote:

Dear experts,

 

I would like to use the DRS4 evaluation board for actual physics experiment.

I made a CUI script based on the drs_exam, https://github.com/mzks/drs4_tools/blob/main/build/source/drscmd.cpp.

In this framework, how can we obtain DAQ livetime (or deadtime)?

Has some function already provided to evaluate them from firmware?

 

Best regards,

Keita

 

 

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