[Halla_parity] Target and shift status

[Richard Wilson and Andree Wilson]

Alas, IL do not live nearby and am now in Taiwan for a couple of weeks.

I am not sure of the JLAB rules, but it should be borne in mind that the older
you are the safer it is to be exposed to radiation and I urge older people to
volunteer

Is appropriate please remind the Jlab radiation safety personnel two factors
which apply in my situation at age 84
(1)  I have already in my lifetime had a lot of radiation exposure, almost all
from X rays
(2)  If at age 84 I get a large enough exposure to give me cancer I note that
the  latent period is about 20 years for cancers of solid tissue and at age 104
that will be the least of my worries

I will be available for shift in 10 days

Dick Wilson

Quoting crowder at jlab.org:

> Hello All,
>
> Last night the target vacuum rose above 1x10-4 mbar and the valves tripped
> closed, so we can't take any beam until we fix the vacuum.  It was decided
> this morning that we would warm up the target and leave it warm over the
> weekend, and replace the o-ring on Monday after some of the radioactivity
> has died away.
>
> We won't need any shift crew, including a target operator, over the
> weekend.  J.P. has begun the process of warming up the target, and the
> current TO will stay until J. P. says it is okay for him to leave (which
> should be soon).  I will remain as RC if you need to contact me (see
> below).
>
>
> --- Status of shifts ---
>
> Monday (May 24th) day shift should be on standby in case the target work
> goes quickly; we may at least need a target operator.
>
> Monday (May 24th) swing shift should plan on coming in as usual until
> further notice.
>
>
> --- To go into the hall ---
>
> Please call (757-876-1787) or email (crowder at jlab.org) me before going
> into the hall for any work.
>
> Until further notice, to work in the hall a high radiation watch is
> needed. A survey will be done in the morning (possibly one this afternoon)
> but the rates are so high that they think we might need to have a high
> radiation watcher all weekend for anyone who goes into the hall.
>
> PLEASE ARRANGE FOR A HIGH RADIATION WATCHER TO GO INTO THE HALL with you
> if you will need an access. The radiation survey map is posted in the
> usual place on the window in the counting house. You CANNOT be your own
> rad-watcher.  Remember that nothing else can be done while serving as a
> watcher.
>
> If the status of the high radiation watcher requirement changes I will
> make a halog entry about it and circulate an email - until then, please
> contact me before going into the hall.
>
>
>
> Please contact me (or the next RC - Lorenzo Zana - starting Monday) if you
> have any other questions.
>
> Thanks,
>
> Juliette
>
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