[BLAST_SHIFTS] Shift summary 10/24/2004 A (1-9)

From: Electronic Log Book (elog@blast05.lns.mit.edu)
Date: Sun Oct 24 2004 - 09:04:04 EDT


Operator: ajmasch

the problems with the wc tdc's still exist. below is a blow-by-blow summary of all that we've tried..

keep in mind that all angles below are very approximate as there is no angular graduation on the wc gas valve:

date/time observation attempted fix result
------------------------ ------------------------ ------------------------ ------------------------
10/20/04 "bad" wc tdc turned wc gas left wc spectra
                spectra in right flow rate from 4 still fine; no
                sector to 5 liters/min change in "bad"
                                                right wc spectra

10/21/04 still "bad" wc tdc shut off gas flow right sector
                spectra in right entirely to left problem goes
                sector sector; all gas away, but can't
                                then flows into take two-sector
                                right sector data like this

10/22/04 still "bad" wc tdc install movable right sector
                spectra in right valve to allow problem not
                sector us to choose fixed
                                the fraction of
                                gas going to
                                each sector;
                                valve initially
                                set so as to
                                form a 70 deg
                                angle with
                                mezzanine

10/23/04, 09:00 still "bad" wc tdc move valve so right sector
                spectra in right as to form a 90 problem goes
                sector deg angle with away, but can't
                                mezzanine; gas take two-sector
                                thus only goes data like this
                                to right sector

10/23/04, 17:00 still "bad" wc tdc move valve so right sector
                spectra in right as to form about problem nearly
                sector a 85 deg angle all gone, but
                                or so with left sector now
                                mezzanine starts to look
                                                bad

10/23/04, 22:00 "bad" wc tdc move valve so right sector still
                spectra in left as to form a 80 looks pretty
                sector deg angle or so good, but left
                                with mezzanine sector shows
                                                no change

10/24/04, 02:30 "bad" wc tdc move valve so right sector still
                spectra in left as to form a 75 looks pretty
                sector deg angle or so good, but left
                                with mezzanine sector shows
                                                no change

10/24/04, 07:00 "bad" wc tdc move valve so ???
                spectra in left as to form a 70
                sector deg angle or so
                                with mezzanine



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