sPHENIX cold QCD topical group

[Itaru Nakagawa <itaru AT riken.jp>]

Hi All,

 Here is the list of GL1p triggers. Let me know if there is any other trigger missing or your preference in the order. Then I'll ask Martin to map the GL1p triggers to follow this order.

https://wiki.sphenix.bnl.gov/index.php/GL1p_trigger_mapping

Best regards,

-itaru

On 2024/04/16 19:25, Ralf Seidl wrote:

> Hi
>       Sasha, all,
>       
>       
>       yes we definitely should also include the singles as that should
>       help us understand pile-up even thought at 200 GeV that is less of
>       a problem. I think we mentioned this to Martin and they should be
>       also included.
>       
>       When I was last at BNL in March I think he mentioned that Joe had
>       already prepared the GL1p scalers in the second/testing daq setup
>       and that it only needed to be copied over to the main setup. Maybe
>       we should check up with him.
>       
>       Apart from the singles we did of course identify also the narrow
>       and wide coincidence triggers from both detectors. I agree with
>       Sasha that around 10cm for the narrow version of the MBD should be
>       good.
>       
>       
>       Cheers,
>       
>       
>       Ralf
>       
>       
>       On 2024-04-17 06:45, Alexander Bazilevsky wrote:
>       
> > Yes, that what we used in PHENIX, and we
> >         can do the same for MBD/ZDC
> >         
> >         in sPHENIX. We only have to decide what vertex cut to use in
> >         BBC_vtx
> >         
> >         and ZDC_narrow. For BBC_vtx it may be +/-10cm (or whatever is
> >         
> >         considered as MB trigger in sPHENIX), for ZDC such a narrow cut
> >         may be
> >         
> >         meaningless, as its vertex resolution is of the order of 10cm
> >         (if I
> >         
> >         remember correctly); we may put e.g. +/30cm which with cross
> >         angle
> >         
> >         running will be almost equivalent to ZDC_wide.
> >         
> >         
> >         Do we plan to include one-side triggers, as we discussed at one
> >         of the
> >         
> >         Cold QCD meeting?
> >         
> >         
> >         Sasha.
> >         
> >         
> >         On 4/16/24 5:12 PM, Riedl, Caroline wrote:
> >         
> >         
> > > Have we chosen which triggers we want to
> > >           include in the switchyard
> > >           
> > >           for the GL1p scalers? In PHENIX, there was BBC no vtx, BBC
> > >           vtx, ZDC
> > >           
> > >           wide, ZDC narrow. I was thinking we could have something
> > >           similar
> > >           
> > >           with MBD and ZDC, if possible. If we haven't chosen yet, we
> > >           should
> > >           
> > >           do this soon and communicate with Martin what we would like.
> > >           
> > >         
> >         
> >         --
> >         
> >         Alexander Bazilevsky
> >         
> >         Brookhaven National Laboratory, Bldg. 510D, 2-232
> >         
> >         Upton, NY 11973 Tel: 631-344-3712
> >         
> >         Email: shura AT bnl.gov
> >         
> >         -------------------------------------------------
> >         
> >       
>