Recent Log Entries

Log Number: 3853437Logbook(s): 

• ELOG

Body: 

Fantastic, thanks Pete/Riad !

Log Number: 3853434Logbook(s): 

• POLOG
• ELOG

Body: 

Phil has built and leak-checked a replacement for fc#1. I talked through preliminaries w/ Chris Gould today. We'll work up a plan to replace existing leaky fc#1 with spare Phil built up during this SAD.

Log Number: 3853432Logbook(s): 

• HALOG
• CLOG
• ELOG

Entry Makers: cryoBody: 

Hall A LN2, 4k supply, 4k return, 15K supply, and 20K return isolated in ESR valve box, Hall A is on warm return

Log Number: 3853428Logbook(s): 

• ELOG

Body: 

DecaRad boxes 1&2, cables and GM tube heads have been
removed from the beam line. Locations have been documented
and materials are stored in cabinet marked INJ Lab 4.
Port Server injdigips was connected to switch opsin01sw2 #20.
Port 1 DecaRad1
Port 2 DecaRad2
Port 3
Port 4 DTM 151 Tesla Meter

Log Number: 3853426Logbook(s): 

• ELOG

Body: 

Lock Out and Tag Out of hazards in the Injector segment will be handled under existing ATLIs for this purpose. It covers Gun HVPS and RF zones.
Injector segment PSS system will be powered down for the upgrade of the system.
PSS Interface chassis will be disconnected and removed for the upgrade.
Separate ATLis is used to track the upgrade work.
Task discussed with owner and approved.

Log Number: 3853424Logbook(s): 

• ELOG

Body: 

Had meeting with Riad today going over bpm name changes , bpm
installs and how it will affect the S&H modules in the Injector. We are
both in agreement on how the S&H modules will be hooked up to the
Hall ADC cards.

Log Number: 3853423Logbook(s): 

• ELOG

Body: 

Disconnected bpm cables from IPM1L05, IPM1L08, IPM1L26 and
IPM1L27 today. Yes I did contact Radcon prior to disconnecting
cables at 1L05, 1L26 and 1L27.

Log Number: 3853422Logbook(s): 

• POLOG
• ELOG

Entry Makers: gramesBody: 

The HWien appears to induce a very modest ~0.5 nA vacuum signal increase at VIP0I01 when I tested it last week, with onset +/- 4 kV (note 90 deg is +/- 11 kV), and did NOT scale with voltage. Interestingly, +/- 4 kV is close to the ~27 deg we ran at for months. So, I soaked the VWien at +/- 11 kV (in the POS configuration over the weekend). The vacuum activity I observed was not apparent, see Fig. 1.

So, we're in good shape. Both Wiens are turned OFF in software now, we'll unpower and safe the PS and disconnect HV cables.

Log Number: 3853421Logbook(s): 

• HALOG
• CLOG
• ELOG

Entry Makers: cperryBody: 

Isolating hall a 4K supply, depressurizing to cold return in preparation for u-tubes

Log Number: 3853420Logbook(s): 

• BDLOG
• ELOG

Body: 

The old version harp power supply, interface chassis, and preamp power supply have been powered down and removed from rack IN03B07.

Log Number: 3853419Logbook(s): 

• POLOG
• ELOG
• SADLOG

Body: 

Day #6, Week2 Day1, Post-830AM Toolbox Meeting, Plan for the
Day:

* Power down Wein system; InjSB + tunnel (Scott/Joe)
* Power down and remove DecaRad system; tunnel (Scott)
* Return gun valve config to "normal"; tunnel (Marcy)
* Dispose of grey mineral oil tank in coordination w/ESH&Q'
InjSB (Carlos/Bubba)
* PSS Kickers and associated chassis removal; InjSB + tunnel
(SSG)
* Laser table disassembly; tunnel (Shukui/Scott)

Other work possibly occurring upstairs in InjSB:
* Harp upgrades @IN03B07 (Dela Cruz)
* Chopper amplifier upgrades, IN01 racks (Farrish)

https://wiki.jlab.org/ciswiki/index

Log Number: 3853417Logbook(s): 

• POLOG
• ELOG

Body: 

I have written an email to Joe and Marcy to get permission to egin labeling Vacuum components in the Injector Wednesday morning ~ 4:30 - 6:30 A.M.

Log Number: 3853414Logbook(s): 

• ELOG

Body: The following entry was removed from the Accelerator Bypassed-Interlocks Log (ABIL) Tag # 3789 Device: Faraday Cup #1 Function: Insert Location: IFY0I06T Purpose: FC1 bellows has repaired leak but is not robust enough to insert.

Log Number: 3853411Logbook(s): 

• ELOG

Tags: 

• MCC8am

Body:  PD SUMMARY Summary

Radcon:  Cont. crane pit RAM work.

Log Number: 3853402Logbook(s): 

• BDLOG
• ELOG

Body: 

The diagnostic racks in the East Arc service buildings have been unlocked by the RADCON group. Rack equipment installation is currently in progress.

Log Number: 3853350Logbook(s): 

• UITFLOG
• HDICELOG
• ELOG

Entry Makers: sandorfiBody: 

Raster Period = 1.00 ms; I = 1.9 Amps H&V

Log Number: 3853349Logbook(s): 

• CLOG
• ELOG

Body: 

Need more room for gas expansion after CHL1 shutdown/North Linac warmup/Hall A warmup. Taking a few South Linac cryomodules to 20% and shipping the inventory away in the tanker truck. We should be able to fill them back up end of next week.