[BLAST_SHIFTS] Shift summary 08/19/2003 B (4-8)

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Operators: karpiusp ---- ----

Took H2 ABS runs flipping beam helicity for runs 2109-2117 (except 2114 is junk)

ligit remained stable, only minor wc trips

crunched the above runs (not all have flr -> still crunching lr)
also crunched runs from previous shift with different beam tunes, septum placement etc. Overlayed vertex plot of three of these runs (see attached)
Septum placement seems to correlate with vertex spike (or lack thereof)

Polarized source arcing will not be repaired until 0800

V11,V14,V15 are now closed.

HV is in standby with WC's OFF

I am leaving early.

        Pete

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