From: Hironori Ito (hito@rcf.rhic.bnl.gov)
Date: Thu Mar 20 2003 - 23:20:25 EST
Hello. As I said before, why do we need adcStart values? Since the gap only happens because of the switching between 12 bits and 15 bits, for all Fastbus 1882F Adc(???) , they are around 3900 (+100 or -400 or so). If you set adcStart as 4300 ch or so for any channels, it would work just fine. (And typical gap size are 1850ch. As a result, the 15 bits setting start around 5750.) Therefore, we are keeping useless values in database. I suppose we can keep adcStart since our database is small and it is already seted-up that way. Hiro Flemming Videbaek wrote: >----- Original Message ----- >From: "Stephen Sanders" <ssanders@ku.edu> >To: "Flemming Videbaek" <videbaek@sgs1.hirg.bnl.gov> >Sent: Thursday, March 20, 2003 7:09 PM >Subject: addition c4 db parameter > >Just as one for other detector with FB ADC two parameters are needed >AdcGap an AdcGapStart. See e.g. Inel and BB counters, the main point being >the following algorithm > >if (Adc > adcStart) Adc=-adcGap; > >This has now been defined in the calibration tables, and you can thus >update\the C4 calibration class. > >Flemming > > > >| Hi Flemming, >| Could you add a parameter for the adc "gap" to the db for C4. This was >| obviously not >| needed in C1. The current parameters are called >| >| pedestal >| pedestalWidth >| adcGain >| >| so I would suggest using the name >| >| adcGap . >| >| Thanks, >| Steve >| > >
This archive was generated by hypermail 2.1.5 : Thu Mar 20 2003 - 23:18:55 EST