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Re: pair space



This is dependent on the outcome of the sweep magnet requirements of 
course.....

Tim

Richard Jones wrote:
> Jim Stewart wrote:
>> Hello Tim
>> This starts to get a bit uncomfortable. If we go with the 24-8-72 
>> then the magnet is 7'-6"= 2.3m long including the field clamp. 
>> Hrachya  plans to use a 1.5m long vacuum chamber followed immediately 
>> with the counter array. This means 4.5m are blocked not counting 
>> space for working. Here I am assuming the radiator is about 1m 
>> upstream so that Franz could install silicon  in front of the magnet. 
>> Could we talk about this at the next tagger meeting? I think we are 
>> missing a couple meters.
>>
>> Jim
>>
> One way to estimate space occupation in the collimator cave is to add 
> up the lengths of the essential items.
> primary collimator: 50 cm
> first sweep: 100 cm ??
> first iron block: 200 cm -- could be incorporated into a longer first 
> sweep magnet with filled gap
> first concrete block: 100 cm
> second collimator: 50 cm
> second sweep: 100 cm ??
> second iron block: 100 cm
> second concrete block: 100 cm
> lead wall: 15 cm
> total (irreducible) length: 815 cm
> total length of cave: 1200 cm
> We probably have something like 3 m max that we can squeeze out of the 
> cave.
>
> Richard Jones
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