[G14_run] Questions about K0 Lambda channel.

[Paul Mattione]

68050 used a single-sector trigger.  The trigger was changed to a two-sector trigger between runs 68197 and 68198.  We are now running with a 2 sector trigger and 1-sector pre-scaled, but I'm not sure what run that switch was made.  Try using runs after 68197.  

I don't know anything about rootbeer or GPID to help you there.  

 - Paul

On Feb 14, 2012, at 11:22 PM, Dao Ho wrote:

> Dear all,
> 
> I just finished a short study of the K0 Lambda channel using the rootbeer
> package.
> I processed about 3.6 million events of the run 68050.
> 
> Out of that 3.6 millions, I got for
> mostly are 2 or 3-track events.
> 5-track events : the number of events is 4 events.
> 4-track events: the number of events is 130 events--->only 13 events were
> identified as 2 pi-, 1 pi+, and 1 proton. I used the GPID bank.
> 
> 
> Were these number expected? They seem small to me?
> Is it because of the nature of the run 68050 (one or two -particle
> triggered?)?
> How to use the GPID information to check whether the same photon was used
> for each particle?
> 
> Let me know your opinion.
> Sincerely,
> Dao Ho
> 
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