Aggregator
Hall B current-normalized halo rates
In Figure 1, brown, RATE03, is the upstream sum from the lower left box on figure 2. It is elevated by a factor of 200 when beam is in the tagger.
Green, RATE02, is downstream sum.
Red, RATE01, is midstream sum.
Note vertical axis is log in figures 1 and 3.
In figure 3 I annotated a few points on the midstream curve.
Program Deputy Summary, presented 2026-05-15
APPROVED Demolition and removal of abandoned light pole located at building 73
Operator SIGN IN
QuickPic - SL GP adjustment to drop upstream xB halo rates a tad
Run #24614: upstrim halo when beam was on tagger Wednsday evening
"REMINDER - xC target orbit lock positions have been changed (see linked ELog)"
QuickPic - xC target/current change (Carbon Hole) 2uA --> (Loop2 10cm) 7uA
CREW CHIEF SIGN IN
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM
Date : 05-15-26
Time : 07:37:32
Day : Friday
Shift : Day
Crew Chief : Blackshaw
Program Deputy: Drury
Team : E
Arm : Janak
Designated SSO: Schoene
LERF Operator:
Operators : Schoene, Janak
This stamp certifies that the above Crew Chief has read/reviewed/received the following:
AutoLog - Masking Hall C Normal Target
xC request Raster (4x4 -> 2x2) & 3H07(X/Y) A,B,C target positions change from in steps of (+/-) 1.0 & 0.5
After changing:
Target (Loop2 10cm) 7uA --> (Carbon Hole) 2uA
Raster size: width = 2.0 --> 4.0 by height = 2.0 --> 4.0
FIG.1,2,3
Hall C Orbit Lock TARGET position changed from 0.0 to 1.0
FIG.4,5
Hall C Orbit Lock TARGET position changed from 1.0 to 2.0
FIG.6,7
Hall C Orbit Lock TARGET position changed from 2.0 to 2.5
FIG.8,9
Hall C Orbit Lock TARGET position changed from 3.0 to 3.5
FIG.10,11
Raster Size Change 4x4 --> 2x2
FIG.12,13
Hall C Orbit Lock TARGET position (Y) changed from:
(3H07A.YPOS) -1.0 to -1.5
(3H07C.YPOS) -0.6 to -1.1
FIG.14,15
Hall C Orbit Lock TARGET position (Y) chan
IBC3H05 temp issues
iocsoftRadNDXSHMS restored
Crew Chief Shift Log, 2026-05-15 OWL
Start of shift: CW to xBCD, but high halo rates in xB










