Cheers,
Douglas
26-415 M.I.T.
Tel: +1 (617) 258-7199
77 Massachusetts Avenue Fax: +1 (617)
258-5440
Cambridge, MA 02139, USA E-mail:
hasell@mit.edu
Begin forwarded message:
> CCR had problems tuning the beam with the unpolarised gas system
> (lifetime 9 minutes, top BQM 350, limited to 100 mA injection). We
> were unable to run in this condition so we have switched back to
> running empty target.
>
> This is the second time we were unable to get a reasonable beam tune
> operating the unpolarised system. I think we will have to dedicate so
> time next week to let CCR develop a tune for this and do the
> unpolarised runs later.
>
> We will run empty until around 23:00 at which time Ernie will phone in
> and instruct CCR in turning off the cooling to the target cell.
>
> Since the vacuum will deteriorate as the target cell warms up we will
> not be able to run overnight. Therefore the shifts from 00:00 Tuesday
> until 08:00 Wednesday are cancelled.
>
> Depending on how long it takes to install the collimator Tuesday and
> how long it takes to re-establish vacuum, beam, etc. we will be down
> until Wednesday morning at least and maybe later.
>
> Stay tuned.
>
>
> Cheers,
>
> Douglas
>
> 26-415 M.I.T.
> Tel: +1 (617) 258-7199
> 77 Massachusetts Avenue Fax: +1 (617)
> 258-5440
> Cambridge, MA 02139, USA E-mail:
> hasell@mit.edu
>
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