[PEPPo] 12 MSD

[Joseph Grames]

Hi,

The PEPPo proposal falls in a rare category.  To my knowledge only 2 
other experiments in the last ~decade have gone across PAC eyes and 
landed at the accelerator:  my 1999 thesis experiment which took 4 
consecutive facility days and the CEBAF ER experiment - which I thought 
was done at startup/shutdown some ~5 years ago?

In short, not many PAC-like days and certainly none which take clock 
hours from experiments.

Anyhow, I think the text is relevant, at least practical.  That's my vote.

-Joe


On 06/30/2011 11:40 AM, hyde at jlab.org wrote:
> Hello,
> I dont think scheduling is really in the purview of the PAC.
> You can make comments in the text about possible scheduling
> scenarios, but I don't think we need it in the abstract.
>
> Charles
>
>> Eric,
>>       I am not opposed to moving it out of the abstract.      The
>> sentence was placed after the sentences that describe what we plan to do
>> with Peppo and before the sentences that describe what will happen after
>> the experiment.
>>
>> The insertion of this sentence does make the abstract flow rather
>> jerky.   The flow can be improved by removing the sentence that starts
>> with "Following the demonstration....."    Which I think makes more
>> sense since we never discuss what we will do following the experiment in
>> the proposal.   New abstract:
>>
>>      We propose to develop and install on the CEBAF injector a beamline
>>      and instrumentation
>>      appropriate for exploring the feasibility of a new approach for a
>> source
>>      of polarized positrons: the transfer of polarization from an intense
>>      electron beam
>>      to positrons by a two-step process (bremsstrahlung followed by pair
>>      production) in
>>      a single target. Such a source would be an important enhancement of
>>      the scientific
>>      reach of the 12 GeV Upgrade, and has other uses ranging from high
>>      energy to condensed
>>      matter physics. This proposal requests two weeks of beam time
>>      utilizing the
>>      CEBAF injector which if scheduled during the first two weeks of the
>>      12 GeV CEBAF
>>      upgrade down will not impact the presently scheduled physics program
>>      but will require
>>      the CEBAF upgrade planning to include provisions for continued
>>      operations
>>      in the CEBAF injector for the first two weeks of the twelve month
>>      shutdown.
>>
>>
>>
>> I had additional sentences on scheduling in the first paragraph of the
>> Peppo run plan section (as you suggest) that are not in this latest
>> release.  Not sure if this omission was an oversight or Larry felt it
>> was redundant given the inclusion in the abstract.
>>
>> Arne
>>
>> On 06/30/2011 10:27 AM, Eric Voutier wrote:
>>> Dear all,
>>>
>>> I just want to share this comment with you and take appropriate action
>>> if everybody agrees.
>>>
>>> The text about the 12MSD is perfect but I find it a bit destructive in
>>> the abstract context, Especially
>>> talking right after about future other experiments etc... I would
>>> prefer to give the reader the
>>> opportuntity to be convinced after some pages of the proposal, and
>>> then put the hammer on the
>>> table with the scheduling issue, better than putting the hammer on his
>>> head at the first lines.
>>> Maybe my paranoia...
>>>
>>> So I would propose to move that part of the text from the abstract to
>>> the very first paragraph of the
>>> PEPPo run plan.
>>>
>>> Would you agree ? Eric
>>>
>>>
>>> _______________________________________________
>>> PEPPo mailing list
>>> PEPPo at jlab.org
>>> https://mailman.jlab.org/mailman/listinfo/peppo
>> --
>> Arne Freyberger
>> Director of Accelerator Operations
>> Jefferson Lab           Office: (757) 269-6268
>> 12000 Jefferson Avenue  Cell:   (757) 876-6289
>> Newport News, VA 23606  Email:  freyberg at jlab.org
>>
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>
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