Re: [BLAST_SHIFTS] Wch gas

From: Michael Kohl (kohlm@mit.edu)
Date: Tue Mar 01 2005 - 13:14:31 EST


I've been taking cosmics since noon at reasonably good S/N and without a
trip since;-)

Regards,

   Michael

On Tue, 1 Mar 2005, Aaron Joseph Maschinot wrote:

>
> if one or more of the gas bottles were indeed empty for six hours, then
> you're probably going to have to give the new bottles time to fill up the
> chambers. i don't know which bottle ran out. if it was the isobutane,
> then you'll probably have the chambers massively tripping nonstop until
> the new isobutane reaches steady-state. if it was the helium that ran
> out, then i suspect that the chamber rates will be very low and
> signal-to-noise will be close to 1. anyway, if either of these two
> problems become manifest, then it means that the chamber gas is not yet
> equally-dispersed, and you should wait longer until it is.
>
> aaron
>
>
> On Tue, 1 Mar 2005, Michael Kohl wrote:
>
> > Hi Aaron,
> >
> > Chris Vidal changed the gas bottles this morning. According to his
> > calculation, the gas should have lasted until today. The fact that it ran
> > empty earlier could be explained if the bottles weren't completely full.
> >
> > No need for you to come, Aaron.
> >
> > Peter, I was too sleepy to suggest you to call Chris when you called me.
> > Chris would have been eager to come and fix it. Anyway, we lost only some
> > 6 hours of empty-target running. And in regard of the heavy snow that was
> > tolerable.
> >
> > Regards,
> >
> > Michael
> >
> >
> >
> > On Tue, 1 Mar 2005, Aaron Joseph Maschinot wrote:
> >
> > >
> > > >> During 1st empty target run, WC's ran out of gas.
> > >
> > > i can come in later this evening to replace the gas, if no one else knows
> > > how. please let me know if this is necessary.
> > >
> > > aaron
> > >
> >
> > --
> >
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> > |-------------------------------------|--------------------------|
> > | Dr. Michael Kohl | Michael Kohl |
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> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
>

-- 

+-------------------------------------+--------------------------+ | Office: | Home: | |-------------------------------------|--------------------------| | Dr. Michael Kohl | Michael Kohl | | Laboratory for Nuclear Science | 5 Ibbetson Street | | MIT-Bates Linear Accelerator Center | Somerville, MA 02143 | | Middleton, MA 01949 | U.S.A. | | U.S.A. | | | - - - - - - - - - - - - | - - - - - - - - -| | Email: kohlm@mit.edu | K.Michael.Kohl@gmx.de | | Work: +1-617-253-9207 | Home: +1-617-629-3147 | | Fax: +1-617-253-9599 | Mobile: +1-978-580-4190 | | http://blast.lns.mit.edu | | +-------------------------------------+--------------------------+



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