[Clas12_rgh] [EXTERNAL] RGH Jeopardy document

[Silvia Niccolai]

Hello all,
Sebastian, Adam and I are working on DVCS projections, I’ll include them tomorrow and update the text accordingly. 
Best regards,
Silvia
Sent from my iPhone

> On 6 Apr 2024, at 18:25, Volker Burkert via Clas12_rgh <clas12_rgh at jlab.org> wrote:
> 
> 
> Thank you Chris! 
>       Much improved on the polarized target. 
> Volker
> 
> From: Christopher Keith <ckeith at jlab.org>
> Sent: Saturday, April 6, 2024 9:10 AM
> To: clas12_rgh at jlab.org <clas12_rgh at jlab.org>; mcontalb at fe.infn.it <mcontalb at fe.infn.it>; Volker Burkert <burkert at jlab.org>
> Subject: Re: [Clas12_rgh] [EXTERNAL] RGH Jeopardy document
>  
> Hi Volker,
> Take a look at the jeopardy document again.  I did some editing yesterday afternoon.  There is a new, longer Target section, and references to the bulk superconducting magnet and Hall C magnet have been commented out.
> 
> Chris
> From: Clas12_rgh <clas12_rgh-bounces at jlab.org> on behalf of Volker Burkert via Clas12_rgh <clas12_rgh at jlab.org>
> Sent: Friday, April 5, 2024 10:27 PM
> To: clas12_rgh at jlab.org <clas12_rgh at jlab.org>; mcontalb at fe.infn.it <mcontalb at fe.infn.it>
> Subject: Re: [Clas12_rgh] [EXTERNAL] RGH Jeopardy document
>  
> Dear Marco,
> 
> I have read the draft and have a few comments that I list here. 
> 
> In section 2  Physics highlights under GPD E it says that "Its measurement in ... DVCS  requires a transversely polarized proton target as a complementary approach to the beam spin asymmetry of an unpolarized neutron target"  I think this formulation is misleading as it could be interpreted that a measurement on a transverse polarized proton target is equivalent to a measurement of the beam spin asymmetry on an unpolarized neutron target. This would be incorrect as  the measurement on a neutron target measures E^n, while the transverse proton target measures E^p. These are obviously different quantities. 
> 
> Section 3.3  - Bulk Magnet.  I am not sure if we should include a fairly long section into the discussion, as this was only relevant for the HDIce option. 
> 
> I have some concern on including anything on the Hall C polarized target in the presentation. It could cause a discussion that we not necessarily want as it just distracts from focusing on our solution to the HDIce problem. If for some reason anyone would bring it up we should be prepared to address it. 
> 
> Minor typos: Section 4.1. The luminosity 10x10^35 = 10^36 should be just 10^35. The "1 mrad in azimuthal angle" should be " 1 mrad in polar angle". 
> 
> Section 5 Physics Observables. I suggest to replace 12 GeV with 10.6 GeV or 11 GeV.
> 
> Best regards,
> Volker
> 
> 
> From: Clas12_rgh <clas12_rgh-bounces at jlab.org> on behalf of Marco Contalbrigo via Clas12_rgh <clas12_rgh at jlab.org>
> Sent: Monday, April 1, 2024 7:15 AM
> To: clas12_rgh at jlab.org <clas12_rgh at jlab.org>
> Subject: [Clas12_rgh] [EXTERNAL] RGH Jeopardy document
>  
> Dear all,
> a draft of the RGH jeopardy document has been opened
> on overleaf. You can access it via
> 
> https://urldefense.proofpoint.com/v2/url?u=https-3A__www.overleaf.com_read_hsmmsyrcbrbm-23a78ab6&d=DwIBAg&c=CJqEzB1piLOyyvZjb8YUQw&r=QWa4FYrGl2z7tyOHBIYcegdYaNKy_NApZOlUL0J3DAI&m=U0h7CvSrGo84Dcp2l9ksvTIjRAz93gEI1DoJYrNskJW6O3n-D4BvXACmk7_lCVox&s=oHCIemsXaYK6DXaH6ufh-8_RnQqK55wLu2t54a3xanU&e=
> 
> Comments and suggestions are welcome. If you like to
> have writing permission, just let me know.
> 
> Thanks, Marco.
> 
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