[Isotope-prod] measurements

[Arne Freyberger]

Andrew and Pavel,
There is no need for filler experiments at CEBAF.  There is a 7-10year 
backlog of approved experiments.    Halls B&C are still under 
construction as Andrew says, however the ability to perform experiments 
in those halls will be severely constrained by the 12 GeV Project 
(installation), the lack of an ARR means the beam energy must be below 
6GeV and the approved NP experiments (HPS and PRAD in Hall-B) that are 
scheduled to take data in parallel with Hall-B installation activities.

I see three options:

 1. Propose an experiment to the PAC.  Tie the measurements to better
    radiation modeling.  I presume the number of PAC days (beam time) is
    short.
 2. Work with a Hall leader to include targets of interest on their
    target ladders and convince them to provide some  beam time on those
    targets during an experimental run
 3. Work out a package for the BSY dump

Option 1 & 3 are long'ish lead option, item 2 will require making your 
case to the hall leader, convincing them that the radiation field will 
not damage the hall equipment.

Option 3 will provide a long term solution (but beam energy to the BSY 
dump is capped at about 7 GeV since the project did not upgrade the BSY 
dump line).   About 12 years ago I proposed a diagnostic test stand in 
that area but this effort did not succeed due to an in ability to 
demonstrate that it would be "safe".    Space is cramped and access is 
limited during nominal NP operations.

Arne

On 02/18/2016 05:24 PM, Pavel Degtiarenko wrote:
> If there's a need in filler experiments, I think we have the best 
> program -- measurement of electronuclear cross sections for isotope 
> production / activation at high energies -- (almost) ready...
> -Pavel
>
> On 02/18/2016 04:23 PM, Hutton Andrew wrote:
>> Vashek
>>
>> The Hall detectors are not all ready and we are trying to find filler 
>> experiments that they can do.  Can you think whether you could carry 
>> out an opportunistic program?  This would not be a hard experiment 
>> for the operators to do.
>>
>> Andrew
>>
>>
>
>
>
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