[Halld-cal] Slides to present request for parasitic running at Hall B meeting

[Elton Smith]

Hi Zisis,

Thanks for your comments. See below

On 2/11/12 10:10 PM, Zisis Papandreou wrote:
> Hi Elton:
>
> nice work on the slides.  A few comments.
>
> - p4: length is 3.9m if you want to be picky
Done.
>
> - p5: following our discussion, I thought about the stand more.  We 
> can mount the pivot attachment to the centre holes, so that the Mini 
> Cal has the SiPMs outside the beam and to the side.  The pivot will be 
> used to orient it so that the electrons are coming in on a plane 
> perpendicular to a plane bisecting the module along its principal 
> axis.  We can then rotate the entire device with its stand, to achieve 
> angles from 90-20, ie go from 15X0 to 44X0.  In other words, we would 
> not need to make a transition piece.
We thought about  this option. In this case the rotation axis becomes 
perpendicular to the floor, but should be at 60deg. The transition piece 
puts the rotation at the correct angle. Tim and Chuck will be looking at 
this carefully this morning to see how we can do this.
>
> -p6: at 5 pass, we have 5.542 GeV, and at the 30% E/E0 point that is 
> almost 1.67 GeV.  You have 1.2 GeV.
Changed to ~1.5 GeV. We will likely sit a fixed E/E0, but it may not 
reach 30%. We will have to survey the geometry carefully to determine 
where the prototype can fit.


>
> The rest looks peachy.
>
> Cheers and have fun in the presentation, Zisis...
>
>> Elton Smith <mailto:elton at jlab.org>
>> February 11, 2012 11:04 AM
>> Dear collaborators,
>>
>> I have put together some slides to summarize our request for parasitic
>> running in Hall B with the mini-Bcal
>> http://argus.phys.uregina.ca/cgi-bin/private/DocDB/ShowDocument?docid=1901
>>
>> Comments are more than welcome. Considering time constraints, I will try
>> to incorporate your suggestions.
>>
>> Cheers, Elton.
>>
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