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Path Length corrections, orbit checks, 3rd pass Separation w/ xB & xD

22 hours 56 minutes ago
Log Number: 4503913Logbook(s): Entry Makers: dchriBody: 

3rd pass Separation w/ xB & xD was mainly fixed by reducing vernier by ~11.0
xB & xD are now 'more' on top of one another than before

In between steering adjustments done by a fellow operator (they have a separate ELog detailing those changes)

Fig. 13
Lots of adjustments to get rates down, overall better than it was before we started

Fig. 1,2
Using xB beam TUNE
Before corrections

Fig. 3,4
Using xD beam TUNE
Before corrections

Fig. 5
corrections w/ xB beam TUNE

Fig. 6
Using xB beam TUNE
After DogLeg corrections

Fig. 7
Using xD beam TUNE
After DogLeg corrections

Fig.

dchri

Pass 3 separation

23 hours 52 minutes ago
Log Number: 4503905Logbook(s): Entry Makers: kpriceBody: 

D beam is really hard to see on 8E viewer; putting a box around it makes it impossible to distinguish from the background (fig 6). If the box is centered on D beam, it's easy to see how far away B is (figs 7 and 8). BPMs make it pretty clear.

kprice

FSD Masking Tool: Successful System Masking for: BeamLossMonitor

1 day ago
Log Number: 4503898Logbook(s): Tags: Body: System Masking for: BeamLossMonitor
User: jhoward
Areas: All

BeamLossMonitor Devices:
ILM0I07
ILM0L01A
ILM0L01B
ILM0L02
ILM2D00A
ILM2D00B
ILM0L04A
ILM0L04B
ILM0L05
ILM0L06A
ILM0L08
ILM0R01
ILM4D00
ILM0R03
ILM0R04
ILM0R06
ILM0R08
ILM0R09
ILM1L01
ILM1L02
ILM6R08
ILM3S00
ILM7S00
ILM9S00
ILM5S10
ILM5E03
ILM7S01
ILM9A01
ILM3E02
ILM5A01
ILM1A04
ILM1A06
ILM1A09
ILM5A10
ILM1A16
ILM1A19
ILM3R10
ILM9R07
ILM1R09
ILM2L03
ILM5R10
ILM5R05
ILM2L01
ILM2T09
ILM8T0
jhoward

1L06 (VIP1L06 A/B) vacuum fault - valves closed - trying to reset

1 day ago
Log Number: 4503895Logbook(s): Entry Makers: dchriBody: 

VIP1L06B (also A) having trouble coming back. If we struggle too long with it then we will likely have to call in the experts

Just yesterday we had to bypass this zone due to HV faults...

Before then, shortly after the zone first tripped, several surrounding zones also tripped off (see linked ELog)

I wonder if there is a connection here...

dchri

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CEBAF Program
MCC Crew Chief Howard
MCC Operators Price, Chaudhary
Program Deputy Saitiniyazi
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