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Re: Hall D targets
Hi Rory -
the only target that we have physically planned at the moment is
liquid hydrogen (and probably deuterium). There was interest by some
groups of using helium, and that would proably also work as well. However,
our core physics program which will likely run for the first 4-5 years is
all hydrogen.
For solid targets, the start counter drives the dimensions of the
available space. GlueX - doc 992 (from the Wiki) indicates that this
is 6.5 centimeter radius. The CDC starts at about 9cm radius.
curtis
On Tue November 25 2008, Rory Miskimen wrote:
> Hi Curtis and Richard,
>
> I'm sure that Ashot told you that we're rushing to put together a Hall D
> proposal for the Primakoff eta
> physics. I've looked at the Hall D PAC 30 proposal and there's mention
> of a 30 cm LH2 target, but no
> details are given. Will there be provisions for a solid target ladder?
> Will there be space for a ladder?
> We would want to run a 12C target, and could bring over the Primex
> target ladder, if there's
> space inside the CDC.
>
> Do you have any plans for running a liquid helium target in hall D? I
> saw no mention of running nuclear
> targets in the PAC 30 writeup.
>
> Thanks in advance for the help.
> Rory
>
--
Professor Curtis A. Meyer Department of Physics
Phone: (412) 268-2745 Carnegie Mellon University
Fax: (412) 681-0648 Pittsburgh PA 15213-3890
cmeyer@ernest.phys.cmu.edu http://www.curtismeyer.com/