Accelerator Update for August 6, 2007 - August 10, 2007

Fermilab Shutdown Report

LINAC

• Low energy Low Level RF upgrade – ~ 5% complete
• H- Vacuum upgrade – 50% complete

Booster

Electrical Work:

• 480/120V connection to the racks at BWT complete
• Cable pull progressing well (~ 45% complete)

Water work:

LCW water work in the Booster West Gallery

• Booster West Gallery isolated from CUB
• All RF stations have been removed out the way
• Prep work and set up for contractors almost complete
• Tunnel water work had a great start and is going well
• Replacing black tubing with Kynar (~60% complete)

BE AWARE:

• 4” and 6” copper pipe are staged in the gallery.

Corrector Installation:

• Disassemble prototype from L4 and shipped back to MTF for tests
• 4 fully assembled magnets are ready for installation
• One of them has been installed at L19
• Today’s plan is to install another one at L17

Next week:

• Finish the cable pull
• Contractors will start installation of the 4” and 6” pipe. There will be a lot of activity with parts in the hallway.
• Start installing the filtration system
• Align both correctors and continue prepping other location in preparation for installation.

Antiproton Source

Mechanical

• Leak Check (4)
• Finished checking D/A & A40
• D:ESEP fixed
• D:ISEP Shielding
• Cutting steel
• Ion Chamber removal
• Deb DCCT motorized stand
• Will move GAPMON?
• D:EKIK ceramic tube
• AP2 Water Hose Replacement
• Leaking LQA
• Disconnected; as-found survey
• Replace leaking Debuncher Sextuple

Cryo

• Valve Stem replaced
• Leak Check (2)
• LN2 transfer line maintenance

Target Station

• Water Systems (2)
• Temperature Monitoring (2)
• Target Rotation
• Storage
• SEM Module
• LVDTs
• Sample Retrieval
• Lens motion
• Air Exhaust Stack
• 10mm-2 into transformer
• Prepping
• 10mm-3 into transformer
• Prepping
• Lens replacement

Cooling Systems

• Deb 3&4 Trans Notch Filters
• Work in progress
• Deb Double Notch Filters
• Work in progress
• Stacktail 4-8GHz Equalizer
• Work in progress
• TWT balance & trip points
• Stacktail Filter 3 cable change

Electrical (Pbar & EE Support)

• Shunt Move
• Shunt Repairs (6)
• PS Maintenance
• Lens SCRs
• Tested; installing
• Regulation Electronics
• Ion Pump maintenance
• Deb Shunt re-arrangement
• Await plan

Other

• Interlocks/Safety System (3)
• Repair cathodic protection
• Dirt holes under buildings
• DCCT calibration
• Baking System checkout
• RF & TWT filters maintenance
• Lights Checkout
• FESS to fix
• Acc BPM repairs
• Activation Survey
• Finished AP1 & Accumulator
• Inductance checkout
• PM ODH Fans & Sumps
• Tunnel Wireless
• Install Leak Detector
• SEM maintenance

Main Injector

Began installation of M30 collimator

Miscellaneous maintenance

Recycler

Pelletron

• Open since Tuesday (8/7)
• Ron did not find anything abnormal
• Usual amount of chain dust; no shaft dust
• Found only two needles (less efficient in high voltage regulation)
• Needles will be replaced
• Measured GVM face to terminal shell distance.
• Removal black poly dust
• Chain: clean or replace?
• New DCCT section installed, leak checked and under vacuum since 9 AM Wednesday.
• Ready for alignment
• V303 move planned; move qt303 DS and move V303 to where qt303 was.
• Trombone additional quadrupoles installation issues

• Under way starting at 601
• Need to move MI buss support at 604
• MI RF PA’s nearby
• Need to talk to HLRF about stations 14 and 18

Tevatron

Things To Come

• E1 and E0 warm up and leak repair
• C0 and A 17 vacuum work
• F17 kicker replacement
• Dehumidifier work
• Vacuum pump maintenance
• Cryo maintenance
• Bad stand replacement?

SwitchYard

They are moving SWICs and two quadrupole magnets

NuMI

MI-65 is considered a construction zone. You need steel-toed shoes, long pants, and a hard hat to enter. There is new crane electronics.

MiniBooNE

• Reverse Horn Polarity
• Take wipes.
• Reverse polarity of horn power supply.
• Test horn.
• Check Corrosion Tabs at 25m Absorber
• Unstack 9 blocks from 25m absorber.
• Retrieve corrosion tabs.
• Restack blocks.
• Seal cover.
• Dry out horn (09Aug07)
• Check Leakage Current on Ion Pumps
• Power Supply Maintenance
• Toroid Work

MTA Beamline Installation

• Linac shutdown does not start until next week
• However we had the chance to access the Linac enclosure 3 days this week and complete some critical tasks
• Alignment
• Finished setting up controls
• Beam line stake out is complete
• Removal of the “gravel” ramp is complete
• Varieties of small tours with contractors and task managers to assess jobs and confirmation of drawings were complete
• MTA beam line installation is scheduled to start its tunnel activities on Tuesday, August 14th
• Equipment readiness
• All magnets are staged at IB2, on their stands, ready for installation
• Ship to Linac parking lot next Tuesday, August 14th
• Next Week:
• 150 ton mobile crane will be located at south of Linac parking lot for ~ 2 ½ weeks, starting August 14th
• This is for the removal of the shielding of the MTA hatch and installation of the beam line.
• The area will also be used as staging area for the needed additional shielding and temporary storage of the magnets and components that will be installed in the tunnel
• The components are scheduled to be showing up to the area on Monday, August 13th
• As a result, about 20 parking spaces will be used

Collider Detector at Fermilab

Alignment has conducted as found surveys. They will be opening up their detector.

D-Zero

Alignment has conducted as found surveys. They are conducting system work.

Alignment

Alignment work has begun

Mechanical

Janitorial work in the tunnels has begun

Cryogenic System

• Shutdown started Sunday morning with fast warm-ups of C4 and D1 magnet strings to room temperature.
• D1 ODH event occurred when Tevatron Cryogenic Transfer Line LHe supply valve EVSH didn’t properly seal thus venting helium into FRIG bldg; resolved by closing valve with auxiliary control box.
• Full Tevatron warm-up to LN2 temperature was started Sunday evening after KRSS power outages.
• 90% of the helium inventory recovered into CHL LHe Dewars and Tank Farm.
• Tevatron Cryogenic Transfer Line vacuum problems at F2-F3, also at various Pbar components/transfer lines; all vacuums pumped down. Tunnel magnet cryostat vacuum problems being addressed by MSD.
• Power outage of MSS on Monday morning uneventful.

Cryo Operations

• 3 FRIG Mycom compressors (plus DZero) running with helium pre-cooled to LN2 temperature flowing through magnet strings
• CHL helium inventory management system operating (Tank Farm, Helium Purifier, A0 GHe Recovery)
• CHL Nitrogen Reliquefier plant off and LN2 supply dependent on vendor deliveries to CHL LN2 Dewar tanks
• Just-in-time shutdown due to CHL feeder 38 failure during the night.

FRIG Maintenance

• 7 out of 13 wet expander flywheels have been replaced
• Wet expander overhauls of cold ends have started
• CDF BA#1 compressor unit is being replaced (failed last month)
• Various vacuum, instrumentation, and controls problems being worked on.

CHL Maintenance

• Helium Coldbox-2 was cooled down successfully for readiness testing
• Coldbox-1
• Being warmed up to room temperature, as is Coldbox-2
• Charcoal Adsorbers being set up for high temperature regeneration
• Nitrogen Reliquefier plant maintenance in progress:
• Marley Cooling Tower cleanup/overhaul,
• Rotoflow compressor after-cooler heat exchanger tube bundle being replaced
• Various facility maintenance to commence next week once CHL operations shiftwork ceases this Friday.

Controls

This Week

• Recovery from Power Outages
• Networks, CAMAC Links, Front ends, etc.
• General Maintenance
• CAMAC Front End SLD Updates Started
• Tevatron Copper BP/ABT link decommissioned
• Tevatron Copper MDAT link decommissioned
• Main Injector C200 Updates completed

Next Week

• Saturday 8/11
• AD Server Updates; loss of access to individual servers as updated. Web access interruptions.
• Monday 8/13
• Database Table Update; no DABBEL access ~2hr.
• Tuesday 8/14
• MAC Room & AD Computer Room UPS Maintenance
• Network Switch IOS Updates
• Wednesday 8/15
• Network Switch IOS Updates
• JAVA Engine Restarts/Updates
• Thursday 8/16
• Network Switch IOS Updates

Safety

• Several safety concerns and suggestions reported this week.
• Numerous requests for PPE, LOTO locks, tags, and job lock boxes
• Baseball style bump caps are available from the ESH Department for head protection in non-construction areas.
• MI-65 has been posted as a construction area
• Hard hats, long pants, and short sleeve shirt are necessary for entering the building or accessing the Pre-Target and Target Hall enclosures.
• ALARA job estimates are currently coming in according to plans.
• Utilize Time, Distance, and Shielding to minimize exposure.
• Task Managers and Crew Leaders are reminded to turn in weekly dosimeter reports to the ESH Department on Monday for the this week.
• A successful shutdown is getting our work done safely.

FESS

No Report

Accelerator Update Archive

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