[Primex2] Found possible dead e-chanel in all compton runs

[Gan, Liping]

HI, Jing,

Each E-counter should have two TDC's. You may check which TDC is dead. If the other TDC for the same E-counter is still alive, you may use the single TDC for that E-counter. 


Liping 

-----Original Message-----
From: primex2-bounces at jlab.org [mailto:primex2-bounces at jlab.org] On Behalf Of Jing Feng
Sent: Monday, November 10, 2014 7:29 PM
To: primex2 at jlab.org
Subject: [Primex2] Found possible dead e-chanel in all compton runs

Dear all and Ilya,
Please see the picture attached. All the compton runs have the problem of several e Channels dead(120/121/126/127/167/168). That may cause our yields lower than anticipation.Please commend on possible influence and remedy on our CS. I've just think of photon flux, MC simulation. If the problem also stay in pi0, we should also pay attention. 6 echannel is 1/30 of our numbers.more than 3% percent roughly. 
Thanks
Jing