[Hps] HPS is taking data

[Maurik Holtrop]

Hello Takashi, Stepan and all of you on shift,

This is really great!

I went through the logbook entries and don't see the entry that explains what the source of background was and how it was eliminated. If you have a moment, could you please point me to the right entry? Was it beam-gas interactions?

Best,
	Maurik


On Dec 12, 2014, at 8:39 PM, Maruyama, Takashi <tvm at slac.stanford.edu> wrote:

> 
> With heroic effort by Stepan, the anomalous source of background was identified and eliminated completely. 1.5 micron-thick Pt target was inserted. Attached is a ECal single rate map at 10 nA. This is very similar to what you see in Monte Carlo. 
> 
> Ben has setup a very loose two cluster trigger and Sergey's DAQ system is taking data at 4.5 kHz at 10 nA. This data will be used to find optimum cuts for pair trigger.
> 
> Takashi
> RC <fadc_firsttarget.png>_______________________________________________
> Hps mailing list
> Hps at jlab.org
> https://mailman.jlab.org/mailman/listinfo/hps