[Vetroc_daq_sbs] Progress with Bob Michaels

[Carlos Ayerbe]

Hi Evan, 

you know, the decoder works translating hex words, but I don't know if the "dictionary" is the same. 

Of course, it is a VERY simple decoder. Take the word and convert, asign to an array and store. 

We will see tomorrow.

Thank you

-Carlos

----- Original Message -----
From: "Evan McClellan" <randallm at jlab.org>
To: "Carlos Ayerbe Gayoso" <gayoso at jlab.org>
Cc: "Vetroc_daq_sbs" <vetroc_daq_sbs at jlab.org>, "Todd Averett" <tdaver at wm.edu>
Sent: Tuesday, October 18, 2016 12:23:48 PM
Subject: Re: [Vetroc_daq_sbs] Progress with Bob Michaels

Hey Carlos,

I have not yet looked carefully at DecodeEel.C. We may be able to use it as-is (or with minor modification) now that we have the ADC data in the coda file.

See you tomorrow.

-Evan


----- Original Message -----
From: "Carlos Ayerbe Gayoso" <gayoso at jlab.org>
To: "Vetroc_daq_sbs" <vetroc_daq_sbs at jlab.org>
Cc: "Todd Averett" <tdaver at wm.edu>
Sent: Tuesday, October 18, 2016 11:53:07 AM
Subject: Re: [Vetroc_daq_sbs] Progress with Bob Michaels

Hi Evan, 

thank you very much. I'm sorry I didn't stay after lunch there. 

Indeed, we don't need ADC and VETROC running at the same time. 

Is the DecodeEel.C useless? I mean, with small changes?

Tomorrow (Wednesday) I'll go to JLab.

Thanks again

-Carlos

----- Original Message -----
From: "Evan McClellan" <randallm at jlab.org>
To: "Vetroc_daq_sbs" <vetroc_daq_sbs at jlab.org>
Sent: Tuesday, October 18, 2016 11:30:43 AM
Subject: [Vetroc_daq_sbs] Progress with Bob Michaels

Hi all,

Excellent progress yesterday with Bob Micheals on the v792 ADC.

He set up a v792-only configuration (v792alone), and after some debugging, we are able to get sensible v792 readout data in the coda stream.

Next steps:
1- Verify ADC values and channel mapping by saturating one channel at a time with a gate signal.
2- Write simple decoder to generate ADC spectra for each channel
3- Re-implement pulse generator and re-align trigger and PMT pulse timing, check for PMT signals with HV scan (one PMT on at a time)
4- verify sensible ADC spectra from PMTs, perform gain-matching

Since we only need the ADC for gain-matching, we don't really need to be able to run the v792 and the VETROC at the same time (right?).

Therefore, after gain-matching, we can return to the VETROC/GTP configuration, and continue setting up for the cosmics test.

-Evan




R. Evan McClellan, PhD
Hall A Postdoctoral Fellow
Jefferson Lab
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