Re: Tagger design

[Tim Whitlatch <whitey@jlab.org>]

Hi Richard,

We can move it back as far as you wish (within reason). When all the 
numbers and locations are agreed upon, we will update the drawings to 
reflect the changes.

Cheers,

       Tim

Richard Jones wrote:
> Tim,
>
> The first and most obvious thing I see is the collision between the 
> fixed array and the microscope.  Can you move the fixed array back by 
> another 20cm away from the exit window?  I am doing a Monte Carlo 
> study and check out the resolution at that distance.  So far my 
> results show that the energy resolution is still dominated by the 
> fixed array counter widths even if you move them as far back as 50cm 
> (normal translation direction) from the exit window.  Of course, this 
> means that they also have to be translated downstream from their 
> present positions and their sizes and spacings modified a wee bit.
>
> Richard Jones
>
>
> Tim Whitlatch wrote:
>> Hello all,
>>
>> As we had discussed during yesterdays meeting, I have posted some 
>> drawings showing the critical dimensions and interfaces for the 
>> magnet, hodoscope, microscope and vacuum chamber. I know some of 
>> these do not match what is currently being used in the software. I 
>> took a stab at the magnet dimensions with the increased step in the 
>> poles for the vacuum chamber walls. I have posted the drawings in 
>> order to get feedback and consensus on the required numbers. Please 
>> review them and add return comments to the email list. In order to 
>> have a reasonable set of consistent drawings for the Tagger review, 
>> these need to be nailed down within a week.  If I missed anything or 
>> misrepresented anything, please let me know. The drawings are on the 
>> wiki at;
>>
>> http://www.jlab.org/Hall-D/software/wiki/index.php/Tagged_Beam_Group_Engineering_Drawings 
>>
>>
>> The last 2 links under the Tagging spectrometer with the Sept. 26, 
>> 2008 date.
>>
>> Cheers,
>>
>>       Tim
>>
>>
>
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