Re: Tagger area

[Elke-Caroline Aschenauer <elke@jlab.org>]

On Tue, 29 Apr 2008, Tim Whitlatch wrote:

Richard,

I don't see any need for you at the moment to get involved. the thing we
are trying to do is to find out what is the radition lavel at the position
of the sipms, because this questions came up at several reviews and we hab
not good answers.

So just very high level info to have some feeling.

bye elke



> Date: Tue, 29 Apr 2008 09:25:35 -0400
> From: Tim Whitlatch <whitey@jlab.org>
> To: Richard Jones <richard.t.jones@uconn.edu>
> Cc: Hall-D Tagged Beam Group <halld-tagger@jlab.org>
> Subject: Re: Tagger area
>
> Hi Richard,
>
> What I am trying to get going is dose during beam operations to
> determine what equipment can survive where. Would this then fall under
> you (item 2)?
>
> Tim
>
> Richard Jones wrote:
> > Tim,
> >
> > I suggest the following division of labor as regards radiation levels
> > in the experimental halls.  This proposal applies both to the tagger
> > area, the collimator cave and the main Hall D area.
> >
> >    1. Caretaker of the geometry: boundary definition, materials, beam
> >       spectrum and intensity profile, and magnetic field maps.
> >    2. Detector backgrounds simulator: Monte Carlo simulation of what
> >       background rates in detectors are, as a result of beam being
> >       present in the hall.  This includes tagging elements, active
> >       collimator and supplementary photon beam profile monitor, pair
> >       spectrometer, total absorption counter, as well as GlueX
> >       spectrometer detectors, based on the reference geometry.
> >    3. Radiation dose (ie. personnel safety) simulator: calculations of
> >       the total radiation levels in all areas foreseen for personnel
> >       access, based on the reference geometry.
> >
> > The way I see it, item 3 is clearly the domain of RadCon.  I believe
> > that this is laboratory policy.  Up until now, items 1 and 2 have been
> > my responsibility.  I have worked well with Pavel (RadCon) up until
> > now in passing him the geometry he needs to perform his functions.  If
> > everyone is amenable, I suggest that we continue to work this way.
> >
> > I think the dose map you are asking about falls under the
> > responsibility of item 3 in the above list.  I am prepared to pass the
> > latest geometry to RadCon for either the tagger or collimator cave to
> > enable them to produce this map.
> >
> > Richard Jones
> >
> >
> > Tim Whitlatch wrote:
> >> Hi Richard,
> >>
> >> Also, is there a dose map of the tagger area? Or is this something we
> >> should ask Pavel to do?
> >>
> >> Thanks,
> >>
> >>       Tim
> >
>

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