sPHENIX is a new detector at RHIC.

[John Haggerty <haggerty AT bnl.gov>]

Martin,

I checked into this and confirmed what I saw with the RF group, that for 
their choice of energy and orbit, the difference between the 6x clock 
for Au+Au is different from p+p by only about 100 Hz, so our 56.299 MHz 
crystals should work for either (it's believed we can accommodate ±100 
ppm, which would be ~5 kHz.

On 2023-09-10 14:15, Martin Purschke via sPHENIX-l wrote:

> Each species switch will require us to physically change the
> oscillators in each ADC clockmaster module. We are now set for Au+Au.
> Starting with pp, we would need to change that, then change back for
> Au+Au. The in-the-middle scenario adds yet one more switch. With 3
> trained people I would guess this will take about 1.5 days including
> all tests.

> On 9/10/23 09:14, Perepelitsa, Dennis via sPHENIX-l wrote:
> > Dear sPHENIX colleagues,
> >
> > As you may know, the Quark Matter conference last week is immediately 
> > followed by the NPP PAC meeting on Monday morning, where sPHENIX will 
> > give an update and present our Beam Use Proposal.
> >
> > I have prepared a draft set of slides for the BUP part of the 
> > presentation here: 
> > https://indico.bnl.gov/event/20316/contributions/79800/attachments/49195/84844/dvp-PAC-9-11-23-DRAFT-1.pdf 
> > <https://indico.bnl.gov/event/20316/contributions/79800/attachments/49195/84844/dvp-PAC-9-11-23-DRAFT-1.pdf> (note 
> > that a summary of commissioning is given in a separate talk by Dave)
> >
> > I would be happy for any comments over the course of today.
> >
> > Dennis
> >
> > Dennis V. Perepelitsa
> > Associate Professor, Physics Department
> > University of Colorado Boulder
> >
> >
> > _______________________________________________
> > sPHENIX-l mailing list
> > sPHENIX-l AT lists.bnl.gov
> > https://lists.bnl.gov/mailman/listinfo/sphenix-l

---
John Haggerty
haggerty AT bnl.gov
cell: 631 741 3358