Re: [BLAST_SHIFTS] Morning shift 05/24/03

From: Octavian F Filoti (ofiloti@cisunix.unh.edu)
Date: Sat May 24 2003 - 14:38:08 EDT


As far as I know, it uses Adam's database!

-----------------------
Octavian F Filoti
Nuclear Physics Group
Univ. of New Hampshire
9 Library Way
Durham, NH 03824
phone: (603)862-1691
FAX: (603)862-2998
email: ofiloti@unh.edu

On Sat, 24 May 2003, Adrian T Sindile wrote:

> Hi, Aaron, Adam -
> Does the "new daemon" use the new BLAST_physics database yet? Let me know
> how it works, I set it up about ten days ago (I emailed about it at the
> time) and I have not heard anything, so I assume everything is fine?
> I was thinking maybe there would be questions about the queries etc. but
> if everything was figured out that's perfect...
>
> Adrian
>
> >
> > we continued with asymmetry measurements this morning. initially, adam
> > asked for some time to get the new HV daemon up and running. once this
> > was done, we proceeded to take data using the new daemon. as the new
> > daemon currently stands, it is only necessary to push standby before a new
> > fill. the daemon will automatically place everything at operating
> > voltages after a fill is completed.
> >
> > some things to note about the daemon:
> > 1. when standby is pushed on the daemon, the BQM high voltages drop
> > down, also. this probably shouldn't be the case, as the BQM's are
> > needed during a fill.
> > 2. the wire chambers appear to take about 10-15 seconds longer than the
> > TOFs to reach operating voltage. since the data inhibit is removed
> > after the TOFs reach operating voltage, you can end up with a fair
> > amount of chamber-less data, especially on multi-fill runs. maybe
> > the chambers can somehow be included in the data inhibit???
> >
> > also, once or twice, we noticed that, after a fill, the BQM rates would
> > occasionally be 2-3 times as high as normal. this seemed to happen
> > sporadically. as such, after we noticed this, we limited each run to only
> > one fill, so as to guarantee that a "bad" BQM-rate fill wasn't included
> > into good-rate data.
> >
> > asymmetry measurements were done on runs 502, 505-509, and 511-512. the
> > results are attached.
> >
> > aaron and michael
> >
> >
>



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