[clas12_rgk] Fwd: new FTOF threshold for the trigger?

[Stepan Stepanyan]

Take a look slides 4/5, looks like DC trigger efficiency is >98% for p>1 GeV.

Stepan

> Begin forwarded message:
> 
> From: Andrea Celentano <andrea.celentano at ge.infn.it>
> Subject: Re: new FTOF threshold for the trigger?
> Date: October 9, 2018 at 11:21:33 AM EDT
> To: Valery Kubarovsky <vpk at jlab.org>
> Cc: Raffaella De Vita <raffaella.devita at ge.infn.it>, Rafayel Paremuzyan <rafopar at jlab.org>, Benjamin Raydo <braydo at jlab.org>, Serguei Boiarinov <boiarino at jlab.org>, Marco Battaglieri <battaglieri at ge.infn.it>, Stepan Stepanyan <stepanya at jlab.org>
> 
> Hi All,
> here are the few slides I prepared for today. Valery, the logbook entries showing the rate are:
> 
> OLD THRESHOLD, OLD FTOF-PCU MAP:
> MesonEx trigger studies, first run <https://logbooks.jlab.org/entry/3603950>
> 
> NEW THRESHOLD, NEW FTOF-PCU MAP:
> MesonEx trigger, second run <https://logbooks.jlab.org/entry/3604051>
> 
> 
> 
> The main change is due to the threshold.
> 
> Meaning of trg bits is the following (ignore what is written in the gui)
> 
> 1..6 : sector-based FTOF*PCU
> 7..12: sector-based FTOF*PCU && PCAL>15 MeV
> 13..18: sector-based FTOF*PCU && PCAL>15 MeV && DC-segments (5 out of 6 layers)
> 19..24: sector-based FTOF*PCU && PCAL>15 MeV && DC-roads
> 
> 29: FT, one e- with 200 MeV < E < 4 GeV
> 
> (Note only trg bit 30 was enabled in the TS)
> 
> Andrea
> 
> 
> 
> 
>> On Oct 9, 2018, at 16:48, Andrea Celentano <andrea.celentano at ge.infn.it <mailto:andrea.celentano at ge.infn.it>> wrote:
>> 
>> Yes,
>> I confirm this! (See my comment in the file). The current threshold is 2 MeV on sqrt(Eleft * Eright)
>> 
>> Andrea
>> 
>>> On Oct 9, 2018, at 16:47, Valery Kubarovsky <vpk at jlab.org <mailto:vpk at jlab.org>> wrote:
>>> 
>>> Here is the current $CLON_PARMS/trigger/VTP/ftofvtp_prod.cnf
>>> 
>>> clasrun at clondaq6:VTP> cat $CLON_PARMS/trigger/VTP/ftofvtp_prod.cnf
>>> ##VTP_W_OFFSET 7900
>>> VTP_W_OFFSET 7650
>>> VTP_W_WIDTH 400
>>> 
>>> #        slot: 10 13  9 14  8 15  7 16  6 17  5 18  4 19  3 20
>>> #     payload:  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16
>>> VTP_PAYLOAD_EN  1  1  1  1  1  1  1  1  1  0  1  0  1  0  1  0
>>> 
>>> #      fiber:  1  2  3  4
>>> VTP_FIBER_EN   1  0  0  0
>>> 
>>> #                      strip mult cluster 
>>> # Unit: 1/10 Phe     1 = 0.1MeV
>>> 
>>> #                    strip  sqrt  n/a
>>> #                      |     |    |
>>> #VTP_FTOF_THRESHOLDS    20     50    0
>>> #A.C. changed this 4 october 2018 
>>> VTP_FTOF_THRESHOLDS    20     20    0 
>>> # VTP_FTOF_NFRAMES 0=4ns, 1=8ns, 2=12ns, 3=16ns coincidence
>>> VTP_FTOF_NFRAMES       8
>>> 
>>> 
>>> 
>>> From: "Andrea Celentano" <andrea.celentano at ge.infn.it <mailto:andrea.celentano at ge.infn.it>>
>>> To: "Valery Kubarovsky" <vpk at jlab.org <mailto:vpk at jlab.org>>
>>> Cc: "Raffaella De Vita" <raffaella.devita at ge.infn.it <mailto:raffaella.devita at ge.infn.it>>, "Rafayel Paremuzyan" <rafopar at jlab.org <mailto:rafopar at jlab.org>>, "Benjamin Raydo" <braydo at jlab.org <mailto:braydo at jlab.org>>, "Serguei Boiarinov" <boiarino at jlab.org <mailto:boiarino at jlab.org>>, "Marco Battaglieri" <battaglieri at ge.infn.it <mailto:battaglieri at ge.infn.it>>
>>> Sent: Tuesday, October 9, 2018 10:14:56 AM
>>> Subject: Re: new FTOF threshold for the trigger?
>>> New FTOF threshold should be:
>>> 
>>> VTP_FTOF_THRESHOLDS 20 20 0
>>> 
>>> Please note this is the current setting in $CLON_PARMS/VTP/ftofvtp_prod.cnf (can you confirm this?)
>>> 
>>> We don’t need to change the FTOF-PCU map (i.e. I suggest keeping the “old” one).
>>> I’ll present my results at today’s spectroscopy meeting.
>>> 
>>> Bests,
>>> Andrea
>>> 
>>> On Oct 9, 2018, at 16:12, Valery Kubarovsky <vpk at jlab.org <mailto:vpk at jlab.org>> wrote:
>>> 
>>> Dear Andrea,
>>> 
>>> We want to start production run as soon as possible with all trigger settings in place.
>>> Do you suggest the new FTOF threshold for the FTOFcPCALu coincidence?
>>> It is right time to set it. Raffaella told me that you found some inefficiency for FTOF.
>>> I mean file VTP/ftofvtp+prod.cnf
>>> (see below)
>>> 
>>> Regards,
>>> Valery
>>> 
>>> ##VTP_W_OFFSET 7900
>>> VTP_W_OFFSET 7650
>>> VTP_W_WIDTH 400
>>> 
>>> # slot: 10 13 9 14 8 15 7 16 6 17 5 18 4 19 3 20
>>> # payload: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
>>> VTP_PAYLOAD_EN 1 1 1 1 1 1 1 1 1 0 1 0 1 0 1 0
>>> 
>>> # fiber: 1 2 3 4
>>> VTP_FIBER_EN 1 0 0 0
>>> 
>>> # strip mult cluster 
>>> # Unit: 1/10 Phe 1 = 0.1MeV
>>> 
>>> # strip sqrt n/a
>>> # | | |
>>> VTP_FTOF_THRESHOLDS 20 50 0
>>> 
>>> # VTP_FTOF_NFRAMES 0=4ns, 1=8ns, 2=12ns, 3=16ns coincidence
>>> VTP_FTOF_NFRAMES 8
>>> 
>>> 
>> 
> 

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