[Moller_intdet] summer students

[Roger D. Carlini]

Hi Michael:

I am not sure what you would propose using an ion chamber for. If your 
thinking about it as a possible replacement for the Quartz (Cherenkov) 
detectors, then (forgetting about it being sensitive to particles other 
than electrons) it must be a very low pressure (sub-atmospheric) high 
voltage hydrogen gas ion chamber. Otherwise it will be way to slow 
(collection time) for the a rapid helicity reversal PV experiment and be 
very non-linear as well. Not to mention all the spallation fragment 
noise issues, etc.

Best Regards

Roger

On 6/10/11 2:48 PM, Michael Gericke wrote:
> Hi Juliette,
>
> I want to have a phone call with Wim and KK to discuss the
> possibility of applying for a small equipment grant through
> NSERC this fall. If this goes ahead (and I don't see a reason
> why  not) then Rob would be the one to write (with my help)
> the grant proposal this summer.
>
> So what has to happen first this summer are a few
> simulations for the geometries that KK and his group
> now have in the CAD and the development of some
> prototype assembly design; something that can be put
> into the hall for testing when we have beam, without
> disturbing the running experiment. In addition, since this
> is a benchmarking exercise, I think it would be nice to
> build a prototype ion chamber, just to see if the resolution
> for GeV electrons is really that poor and to see how sensitive
> they are to background. This is a little more complicated (as
> Dave pointed out to me) since this involves building a pressure
> vessel which has to satisfy the JLab used engineering code.
> So someone would have to go talk to a JLab engineer about
> that.
>
> The design and simulations can then be used in the proposal.
>
>
> What we need for the proposal:
>
> 1) Purpose and goal:
>        That one is easy: benchmark simulations and
>         selection of detector material/geometry etc ...
>
> 2) Physics and working principle:
>       This should be clear!
>
> 3) Time line:
>        There is not much room to play with. If the proposal
>        gets put in this fall and ends up being successful, then the
>        money  would be available April 1st, 2012. I have some
>        money (about 10k - 20k) available now to get started, which I would
>        replace in April, if the grant is successful, but the major question
>        is how expensive the quartz pieces will be and how long it would
>        take to get them after the order is placed. The people I
>        know of who might have an estimate of these are Dave Mack
>        and Mark Pitt.
>
> 4) Cost estimates (with quotes):
>       - Two quartz pieces for each geometry (how many are there ?)
>       - Suitable PMTs and divider hardware (this may all be stuff that can
>         be found at the lab already, but is should be in the proposal for
>         completeness and because it is good to show that some of the
>         costs are covered by other source ... leverage)
>       - Any other hardware needed
>       - DAQ: use a free qweak MD channel ?
>
> 5) Manpower
>       - You
>       - Rob
>       - Students
>         Summer students are fine, but it would be good if a Canadian
>         graduate student was involved for HQP (training of highly qualified
>         personnel accounting)  which increases the chances for grant success.
>         I am thinking about Scott at some small fraction of his time.
>
> So, to answer your question Juliette, I would say it is clear that there is
> work to be done this summer, but I am not sure it will be hardware work
> (yet).
>
> If anyone has any ideas or suggestion, please let me know.
>
> Michael
>
>
>
> On 10/06/2011 8:39 AM, Juliette Mammei wrote:
>>   Hey guys,
>>
>> I am going to be mentoring at least one high school summer student.  I
>> think that he will work on a simulation project for MOLLER, either for
>> the main detectors specifically or looking at the photon backgrounds
>> or something like that.
>>
>> There is another student who needs a mentor; is there a possibility to
>> have her do some work on the prototype detector over the summer?  If
>> so, then I am willing to handle the business side of things to mentor
>> her as well, unless Rob wants to do it himself... I think it will be a
>> good experience.
>>
>> Talk to you later,
>>
>> Juliette
>
>