Feed aggregator

Log Number: 3853481Logbook(s): 

• UITFLOG
• HDICELOG
• ELOG

Entry Makers: sandorfiBody: 

beam on M905 with focus on tgt
- Raster off - fig 1
- Raster H & V on - fig 2
- raster V only - fig 3
- raster H only - fig 4

Log Number: 3853479Logbook(s): 

• UITFLOG
• HDICELOG
• ELOG

Entry Makers: sandorfiBody: 

- under raster so that beam is barely in the acrs: P = 1.00 ms; Vpp(H) = 0.2721; Vpp(V) = 0.2969 (I = 0.35 w old calib)
- tweak position so that all arcs are equally illuminated - fig 1

Log Number: 3853478Logbook(s): 

• UITFLOG
• HDICELOG
• ELOG

Entry Makers: sandorfiBody: 

- IBC main and trans at full field;
- dump solenoid OFF - fig 1 ; X = 296 pix; Y = 188 pix
- dump solenoid at 50 Amps; X = 300 pix; Y = 190 pix - fig 2
- dump solenoid at 100 Amps; X = 305; Y = 188 - fig 3
- dump solenoid at 150 Amps; X = 306; Y = 186 - fig 4
- dump solenoid at 200 Amps; X = 307; Y = 182 - fig 5
- dump solenoid at 250 Amps; X = 306; Y = 178 - fig 6
- dump solenoid at 300 Amps; X = 300; Y = 173 - fig 7
- dump solenoid at 320 Amps; X = 300; Y = 175 - fig 8
- dump solenoid at 340 Amps; X = 299; Y = 175 - fig 9

Note: above about 200 Amps (~ .15 tesla) dump overwhelms

Log Number: 3853477Logbook(s): 

• ELOG

Body: 

Completed power down of the PSS in the ISB.
Turned off and locked out all PSS interlocked hazards (Gun HVPS, RF zones).
Investigated disconnection of the Kicker and removal of the PSS Interface chassis. SSG will require assistance from RF group to remove RF chassis.
All chassis are disconnected but not removed. We'll continue on Tuesday morning.

Log Number: 3853474Logbook(s): 

• POLOG
• ELOG

Body: 

Day #6, Week2 Day1 Wrap-Up

* Complete [Power down Wein system] 3853422
* Complete [Power down and remove DecaRad system] 3853428
* Complete [Return gun valve config to "normal"] 3853463

On-Going
* Harp upgrades -- removed old PS, interface chassis, and
pre-amp PS. 3853420
* Chopper amplifier upgrades -- drive line cables cut and
terminated. 3853456

Other
* Extractor gauge energized for Gun2 vacuum monitoring. 3853461
* IN02B10, IN02B11, IN02B26, and IN04B10 powered down,
LTT'ed. 3852429
* Began PSS Interface Chassis Removal. a21330

Log Number: 3853471Logbook(s): 

• ELOG

Body: 

R/S 83 its cables and conduit up to our box duct has been
removed. Power connections removed in the Hall A system A
and B racks in counting house. R/S box and supporting
hardware is now stored in the PSS rack in Hall A.

Log Number: 3853470Logbook(s): 

• ELOG

Body: 

NW Cross over beamlines are vented, N2 flow is stopped and
bleed valve close, Turn N2 flow back on when ready to
disconnect Cross-over beamlines

Log Number: 3853465Logbook(s): 

• ELOG

Body: 

Crew 2 from S. Linac MBW2E03 to W. Arc MJI2A04

Log Number: 3853463Logbook(s): 

• POLOG
• ELOG

Body: 

Gun 2 and 3 valve controls returned to normal state after
high voltage tests.

Extractor gauge turned on in Gun 2 for pressure measurement
prior to venting.

Log Number: 3853461Logbook(s): 

• POLOG
• ELOG

Entry Makers: marcyBody: 

15:13 - turned on extractor gauge in gun 2. This will be left on until the gun is vented in order to measure the pressure.
The ion pump rose ~2 orders of magnitude from 7e-10 amps to 7e-8 amps when the filament energized, and is recovering.
The ion pump pressure started in the high 10^-9 Torr range and is falling.

Log Number: 3853460Logbook(s): 

• ELOG

Body: 

East Arc work continues from MQB1A08, completed
measurements all the way to stack 11. Work will continue in
the AM.

Log Number: 3853459Logbook(s): 

• ELOG

Body: 

PSS PLC System A in rack NL12B10 is powered down. PSS PLC System B in rack NL12B11 is powered down. 24 volt DC
power is active, for ODH System in rack NL12B11.

Log Number: 3853457Logbook(s): 

• ELOG

Body: 

Magnet Measurement:

QD1L07 girder magnet disassembly work is completed.

QB1L08 girder magnet work is almost complete, the only
thing that needs to happen is the top of the QB quad has to
be removed, left one bolt in aisle side/upbeam end of quad
finger tight until rigging gear is installed.

We are already working at QD1L06 that girder will be
completed tomorrow.

Our next step in girder/magnet processing after QD1L06 is
completed, will be contact RAD group to get entry details to
be able to work at QD1L05 girder as this region is a posted
Radiation Area.

Log Number: 3853456Logbook(s): 

• ELOG
• LLRFLOG
• RFLOG

Body: 

Cutting & terminating LDF-5 for rf drive lines to the chopper system, tomorrow I will be removing the old chopper amps from the rack

Log Number: 3853455Logbook(s): 

• ELOG

Body: 

pump cart set up and bleed up started at NW crossover will
remove 4 beam pipes tomorrow in AM

Log Number: 3853453Logbook(s): 

• ELOG

Body: 

Task approved. Decommissioning!

Log Number: 3853452Logbook(s): 

• ELOG

Body: 

PSS PLC System A in rack NL12B10 is powered down. PSS PLC System B in rack NL12B11 is powered down. 24 volt DC power is active, for ODH System in rack NL12B11.

Log Number: 3853447Logbook(s): 

• ELOG

Body: 

Downgraded magnets in HCO for 1L05, 1L06, 1L07, 1L08,
1L26 and 1L27 to not ready.

Log Number: 3853446Logbook(s): 

• ELOG

Body: 

Task discussed with owner and approved.
24VDC needs to stay ON for ODH alarms for now.

Log Number: 3853445Logbook(s): 

• ELOG

Body: 

FML will provide safety oversight and will coordinate with Operability as work plans and work starts to happen.

There will be long stretches of time and location when the fire system will be unavailable. During these times, FML will provide fire-watch oversight.

JLab will need to follow the subcontractors approved safety plan to traverse or work within the construction boundaries. PPE and communication requirements will be posted at the edges of the construction area.

Task Approved.