[Halld-tagger] List of changes

[Alexander Somov]

I modified the wiki page (we will need to check the exact
magnet pole length once again, I think that I have the latest
numbers).

I will ask Slava to send me the latest tech drawing tomorrow; I will
link them to the engeneering page.

Cheers,
        Alex


On Mon, 14 Jun 2010, Richard Jones wrote:

> Alex,
>
> Ok, sounds good.  Can add these changes to the wiki page, and also specify 
> what the distance is between the two aperture axes on the primary collimator. 
> I want to make sure that is in the specification, before we end up with two 
> holes 3 cm apart.  Can you link the drawings of the collimators to the wiki 
> engineering page?
>
> -Richard J.
>
>
> On 6/14/2010 5:50 PM, Alexander Somov wrote:
>> Hello Richard,
>> 
>> Below are a few minor corrections/comments to the list:
>> 
>> 8) according to my record, the pole size should be 41 x 622.7 cm^2
>> (measured from the pole edge). Tim, could you please check.
>> 
>> 12) Design of the primary collimator.
>> We reduced the length of the primary collimator from 30 cm to 20 cm
>> (based on the bg simulation). The size of the inner tungsten rectangular
>> block is 8'' x 2.5 '' x 8'' (there are two holes in it). It is wrapped
>> by lead (blocks) with the outer dimensions
>> 12''(width) x 8'' (height) x 8'' (length)
>> 
>> 15) just to be consistent with the ps proposal, the ps will be
>> instrumented with 40 counters (rather than 36): 24 (FSF) + 6 (WSF)
>> + 6 + 4 counters in the back.
>> 
>> Cheers,
>>          Sascha
>> 
>
>
>