[Tpe] trigger

[Puneet Khetarpal]

Modifications implemented.

Puneet

"No word is true until it is eaten" - 36 Lessons of Vivec, Sermon 27



On Mon, Nov 8, 2010 at 1:23 PM, Larry Weinstein <weinstei at jlab.org> wrote:
> Dear Puneet,
>
> Under 'Other Triggers' you list
>
> For lepton ID:
>
> EC x CC (for functioning sectors 1 and 4?)
> CC (for functioning sectors 1 and 4?)
>
> I suggest the following (all prescaled):
> a)  EC .AND. CC (both sector 1)
> b)  EC .AND. CC (both sector 4)
> c)  EC (higher threshold) any sector
>
> Note that the 'minimum ionizing' threshold for EC for the main trigger
> should probably be about 200 MeV or lower.  Our forward angle minimum energy
> protons will be in the Q2 = 0.5 GeV^2 bin and will therefore have an average
> kinetic energy of omega = Q2 / 2 = 0.25 GeV.  Since the width of the
> distribution is probably about 20% (and the bin width is finite), we should
> set the threshold at 0.2 GeV.
>
> Note that the calorimeter is about 140 g/cm^2 so that minimum ionizing
> particles will deposit 0.28 GeV.
>
> - Larry
>
>
> Puneet Khetarpal wrote:
>
> Hi All,
>
> I've taken the suggestions and placed the trigger config on the wiki
> (accessible from main page):
>
> https://claswebnew.jlab.org/rungroups/tpe/wiki/index.php/Trigger
>
> Please take a look. Any other comments and suggestions are most
> welcome. If everything looks okay, then I'll send this to Sergey.
>
> Thanks,
> Puneet
>
> "No word is true until it is eaten" - 36 Lessons of Vivec, Sermon 27
>
>
> On Mon, Nov 8, 2010 at 12:06 PM, Puneet Khetarpal <puneetk at jlab.org> wrote:
>
>
> Okie Dokie!
>
> Thanks,
> Puneet
>
> "No word is true until it is eaten" - 36 Lessons of Vivec, Sermon 27
>
>
>
> On Mon, Nov 8, 2010 at 12:05 PM, Larry Weinstein <weinstei at jlab.org> wrote:
>
>
> Dear Puneet,
>
> That should be
> TOF Sec 1 Panel 2 AND TOF Sec 4 Panel 2
> TOF Sec 2 Panel 2 AND TOF Sec 5 Panel 2
> TOF Sec 3 Panel 2 AND TOF Sec 6 Panel 2
>
> Note that Panel 2 is defined as TOF detectors 24-30 covering angles from 45
> to 60 (approx).
>
> - Larry
>
> Puneet Khetarpal wrote:
>
>
> Oops. That's a typo (Copy and paste mistake). Thanks for catching that for
> me.
>
> I'll fix it. So, the actual secondary trigger is just:
>
> Secondary Trigger (want, can do without it):
> ================================
> TOF Sec 1 Panel 2 AND TOF Sec 4 Any panel
> TOF Sec 2 Panel 2 AND TOF Sec 5 Any panel
> TOF Sec 3 Panel 2 AND TOF Sec 6 Any panel
> TOF Sec 4 Panel 2 AND TOF Sec 1 Any panel
> TOF Sec 5 Panel 2 AND TOF Sec 2 Any panel
> TOF Sec 6 Panel 2 AND TOF Sec 3 Any panel
>
> Thanks for catching that.
>
> Puneet
>
> "No word is true until it is eaten" - 36 Lessons of Vivec, Sermon 27
>
>
>
> On Mon, Nov 8, 2010 at 11:59 AM, Maurizio Ungaro<ungaro at jlab.org>  wrote:
>
>
>
> I understand that but how can there is coincidence with EC that covers
> only up to 45 ?
>
> mauri
>
>
>
> On Nov 8, 2010, at 11:56 AM, Puneet Khetarpal wrote:
>
>
>
>
> Hi Mauri,
>
> "Panel 2" refers to hit in TOF with 45<  theta<  62 deg.
>
> We can ask Sergey for the CC x EC triggers in the functioning sectors.
> I don't know how many bits are still left.
>
> Puneet
>
> "No word is true until it is eaten" - 36 Lessons of Vivec, Sermon 27
>
>
>
> On Mon, Nov 8, 2010 at 11:52 AM, Maurizio Ungaro<ungaro at jlab.org>
>  wrote:
>
>
>
> Hi,
>
> I'm not sure I understand the second trigger, coincidence between EC
> and TOF panel 2 ?
>
> Also, I recommend some other trigger, prescaled:
>
> 1: any TOF panel in one sector and any in the opposite sector
> (prescaled)
> 2a: CC trigger in the functioning sectors
> and / or
> 2b: CC+EC trigger where CC is functioning
>
> 2 will help us with lepton ID.
>
> best,
> mauri
>
>
>
> On Nov 8, 2010, at 11:46 AM, Puneet Khetarpal wrote:
>
>
>
>
> Hi All,
>
> Here is the trigger setup that has been decided for TPE for now.
> Please take a look and suggest any changes / modifications. Sergey and
> Co. would like us to give them a final trigger configuration for the
> experiment as we are asking for special triggers and they would like
> to make sure the trigger is configured appropriately to meet our
> needs:
>
> Primary Trigger (critical, can't do experiment without it):
> ========================================
> TOF Sec 1 Panel 1 x EC Sec 1 AND TOF Sec 4 Any panel
> TOF Sec 2 Panel 1 x EC Sec 2 AND TOF Sec 5 Any panel
> TOF Sec 3 Panel 1 x EC Sec 3 AND TOF Sec 6 Any panel
> TOF Sec 4 Panel 1 x EC Sec 4 AND TOF Sec 1 Any panel
> TOF Sec 5 Panel 1 x EC Sec 5 AND TOF Sec 2 Any panel
> TOF Sec 6 Panel 1 x EC Sec 6 AND TOF Sec 3 Any panel
>
> In the above, "Panel 1" refers to TOF hits within 8<  theta<  45 deg
> which is scintillators #1 to #23; "EC" refers to low threshold EC
> signal for Minimum ionizing; "Any panel" refers to signal coming from
> any part of the TOF sector.
>
> Secondary Trigger (want, can do without it):
> ================================
> TOF Sec 1 Panel 2 x EC Sec 1 AND TOF Sec 4 Any panel
> TOF Sec 2 Panel 2 x EC Sec 2 AND TOF Sec 5 Any panel
> TOF Sec 3 Panel 2 x EC Sec 3 AND TOF Sec 6 Any panel
> TOF Sec 4 Panel 2 x EC Sec 4 AND TOF Sec 1 Any panel
> TOF Sec 5 Panel 2 x EC Sec 5 AND TOF Sec 2 Any panel
> TOF Sec 6 Panel 2 x EC Sec 6 AND TOF Sec 3 Any panel
>
> In the above, "Panel 2" refers to TOF hits within 45<  theta<  62 deg
> which is scintillators #24 to #30.
>
> Level 2 Trigger (desire, can do without it):
> ==============================
> DC Sec 1 Forward x TOF Sec 1 Panel 1
> DC Sec 2 Forward x TOF Sec 2 Panel 1
> DC Sec 3 Forward x TOF Sec 3 Panel 1
> DC Sec 4 Forward x TOF Sec 4 Panel 1
> DC Sec 5 Forward x TOF Sec 5 Panel 1
> DC Sec 6 Forward x TOF Sec 6 Panel 1
>
> In the above, "Forward" refers to the 0<  theta<  45 degrees in DC. I
> am not certain if we can have that in the trigger.
>
> Please let me know if this trigger setup is what we need/want. Please
> suggest any modifications or comments as needed. If everything looks
> okay then I can give Sergey the final go ahead for this trigger
> config.
>
> Thank you,
> Puneet
>
> "No word is true until it is eaten" - 36 Lessons of Vivec, Sermon 27
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>
> --
>                                Sincerely,
>                                Larry
>
> -----------------------------------------------------------
> Lawrence Weinstein
> University Professor
> Physics Department
> Old Dominion University
> Norfolk, VA 23529
> 757 683 5803
> 757 683 3038 (fax)
> weinstein at odu.edu
> http://www.lions.odu.edu/~lweinste/
>
>
>
>
>
>
> --
> 				Sincerely,
> 				Larry
>
> -----------------------------------------------------------
> Lawrence Weinstein
> University Professor
> Physics Department
> Old Dominion University
> Norfolk, VA 23529
> 757 683 5803
> 757 683 3038 (fax)
> weinstein at odu.edu
> http://www.lions.odu.edu/~lweinste/