2007 Accelerator Update Archive

December 21, 2007 - December 31, 2007
- One store with an initial luminosity of 193.22E30 was established on 12/31/07
- TeV helium leak leads to replacing TeV dipole magnet at sector A4
- Linac repairs nitrogen leaks on vacuum valves
- MI found and replaced some bad beam pipe
- Pbar repairs problem with lithium lens

December 19, 2007 - December 21, 2007
- Three stores provided 21 hours and 37 minutes of luminosity
- Experts prepare Switchyard and MTest for next user
- Booster experts increase beam intensity
- Power glitch trips off vacuum pump and causes quench
- Operations hopes your holidays are bright and full of cheer

December 17, 2007 - December 19, 2007
- Two stores provided 45 hours and 32 minutes of luminosity
- Feeder 36 fault found
- Pbar vacuum leak found and fixed

December 14, 2007 - December 17, 2007
- Five stores provided 45 hours and 56 minutes of luminosity
- Two TeV stores reach luminosities of 210.5 and 211E30

December 12, 2007 - December 14, 2007
- Two stores provided 29 hours and 39 minutes
- Linac Momentum dump vacuum capped
- Cryo experts complete repair on C4 cold compressor
- Duty Electrician finds and replaces very old Linac breaker

December 10, 2007 - December 12, 2007
- Three stores provided 35 hours and 1 minute of luminosity
- Fixed target areas recover from power glitches
- Experts confirm Linac Momentum dump vacuum bad
- Meson MTest T976 begins taking beam

December 7, 2007 - December 10, 2007
- Three stores provided 53 hours and 55 minutes of luminosity
- Recycler conducts electron cooling drag rate measurements
- Linac adds vacuum pump and resumes sending beam
- Linac experts fix low level RF problem
- Duty Mechanic repairs F4 LCW pump
- Cryo repairs C2 wet engine
- Switchyard experts prepare MTest for next experiment, T970

December 5, 2007 - December 7, 2007
- One store provided 32 hours and 32 minutes of luminosity
- Booster replaces weak RF Power Amplifiers
- Linac replaces Klystron flow turbines
- Wire scanner (cause of Linac vacuum problems) removed

December 3, 2007 - December 5, 2007
- One store provided 9 hours and 6 minutes of luminosity
- A3 thermometry crate repaired
- MI ground fault due to cable
- Linac vacuum leak found

November 30, 2007 - December 3, 2007
- Three stores provided 31 hours and 45 minutes of luminosity
- MI conducts aperture scans and slipstacking studies
- Pbar sets stacking record with 24.30 mA for an hour
- Vacuum leak fixed in TeV sector D17
- TeV collimator skew corrected
- New Recycler damper system implemented

November 28, 2007 - November 30, 2007
- Two stores provided 16 hours and 15 minutes of luminosity
- Vacuum leak successfully repaired in F11
- Controls experts resolve clock problems
- Pbar set new stacking record with a rate of 23.87 mA per hour
- D0 and CDF making 2 - 4 hour access today (11/30/07)

November 26, 2007 - November 28, 2007
- Two stores provided 28 hours and 23 minutes of luminosity
- Pbar sets new stacking record with a rate of 23.22E10 for one hour
- C4 wet engine repaired faster than estimated

November 21, 2007 - November 26, 2007
- Six stores provided 62 hours and 59 minutes of luminosity
- NuMI repairs water skid and resumes taking beam
- CDF repairs COT
- TeV conducts maintenance during CDF access

November 19, 2007 - November 21, 2007
- Two stores provided 27 hours and 33 minutes of luminosity
- NuMI resumes taking beam
- The TeV, MI, Pbar, and Booster all get study time
- CDF may be allowed an 8-12 hours access on 11/23/07

November 16, 2007 - November 19, 2007
- Four stores provided 49 hours and 56 minutes of luminosity
- Recycler beam valve repaired
- Recycler experts revert to old damper system
- NuMI resumes taking beam
- Kicker problem halts NuMI beam

November 14, 2007 - November 16, 2007
- Two stores provided 32 hours and 30 minutes of luminosity
- TeV conditions separators
- MI repairs bus LCW leaks
- Pbar sets record with a 271mA stack
- Experiment T972 moves from Pbar to MINOS
- NuMI might resume taking beam on 11/17/07

November 12, 2007 - November 14, 2007
- Two stores provided 17 hours and 57 minutes of luminosity
- TeV A0 nitrogen DEWAR gets deliveries every day
- Latest Meson MTest experiment completed
- TeV conditions its separators
- Pbar sets stacking record with 260 mA and rising

November 9, 2007 - November 12, 2007
- Two stores provided 21 hours and 27 minutes of luminosity
- Cryo Coordinator diverts nitrogen delivery to fill empty A0 DEWAR
- Accesses across the complex to restart vacuum pumps and check LCW and vacuum valves
- Experts help operators turn on Pelletron

November 7, 2007 - November 9, 2007
- B0 magnet moves completed
- New MTest experiment gets beam
- TeV begins tuning accelerator
- Operations manages many LCW and vacuum valve closures

November 5, 2007 - November 7, 2007
- Linac LCW leak found on LRF3 cavity, not in penetration
- Aborted store did not quench TeV or damage CDF detector
- Switchyard vacuum leak found
- Shutdown allows maintenance work many machine studies
- The sector B0 low beta magnet moves continue

November 2, 2007 - November 5, 2007
- Four stores provided 36 hours and 2 minutes of luminosity

October 31, 2007 - November 2, 2007
- Three stores provided 25 hours and 13 minutes of luminosity
- D0's interaction point was "spot on"
- 12 hour or more shutdown next week

October 29, 2007 - October 31, 2007
- Two stores provided 24 hours and 59 minutes of luminosity
- NTF treats patients

October 25, 2007 - October 26, 2007
- FESS switched Pbar 95 LCW pumps
- Meson MTest had safety walkthrough
- Pbar reported good stacking efficiency

October 24, 2007 - October 25, 2007
- Tevatron conducting studies
- Pbar momentum cooling rephased
- Beam to Switchyard and Meson M01

October 23, 2007 - October 24, 2007
- Complex in access
- D0 completed detector repairs
- Switchyard receives permission to take beam

October 22, 2007 - October 23, 2007
- Recycler stashed
- Antiprotons successfully injected into the TeV
- D0 conducting 12-16 hour access to repair detector
- Accelerators in access for maintenance and repairs

October 19, 2007 - October 22, 2007
- Recycler stashed antiprotons
- Electron Cooling studies
- TEL1 used to scrub abort gap
- Sci/MiniBooNE taking beam
- D0 to make 12-16 hour access on 10/23/07

October 18, 2007 - October 19, 2007
- Two Pbar magnet leaks were repaired
- Pbar stacked
- TeV accelerated a proton beam to 980 GeV
- MI established an 8 and 120 GeV beam

October 17, 2007 - October 18, 2007
- TeV access to adjust lead flows
- TeV injected reverse protons
- Pbar has Debuncher momentum cooling problems
- Recycler conducts Electron Cooling and proton studies

October 16, 2007 - October 17, 2007
- Tevatron quenches
- Beam injected into the TeV
- Pbar stacks antiprotons
- Linac has RF (LRF2) problems
- D0 needs 8-10 hour access

October 15, 2007 - October 16, 2007
- Tevatron cryo system cold
- TeV receives permission to run beam
- MiniBooNE/SciBooNE ready for beam
- Pbar sends beam to Accumulator and Debuncher
- Recycler ready for antiprotons
- D0 must open detector - 8 hour job

October 12, 2007 - October 15, 2007
- Linac, Booster, Main Injector, Antiproton Source, and MiniBooNE all get beam
- Linac access to repair vacuum leak
- TeV access to check cryo and complete small job in E1
- CDF and D0 accesses to complete some work
- D0 ready for beam
- CDF muon walls still open
- Once the TeV gets cold, experts will establish beam

October 5, 2007 - October 12, 2007
- Shutdown work finishing and startup beginning
- For an excellent summary of where we are now (10/12/07) read the read the Run Coordinator's Summary in this report
- This is the last shutdown report. Regular reports will begin next week on Monday

September 28, 2007 - October 5, 2007
- LINAC is up an running.
- Booster may take beam this weekend.
- Tevatron - Found and repaired many vacuum leaks.
- NuMI - Installation of dehumidifier system continues and repair of Horn 2 will take place this weekend.

September 21, 2007 - September 28, 2007
- LINAC - NTF starts up tonight
- Tevatron - Found and repaired many vacuum leaks
- NuMI - Installation of dehumidifier system continues
- LINAC and Booster are scheduled to begin turn on next week

September 14, 2007 - September 21, 2007
- Recycler - Two vacuum leaks were found and fixed
- Tevatron - The magnet unrolls were completed
- Safety - The Linac enclosure interlock work was completed
- NuMI - The HV101-1 magnet was repaired
- CDF - East end plug closed
- Controls - There will be *NO CONTROL SYSTEM* from 7 AM Saturday (9/22) to Sunday evening (9/23)

September 7, 2007 - September 14, 2007
- MuCool - Electrical work and alignment behind schedule
- Main Injector - Has general startup plan
- TeV - Vacuum issues
- Recycler - Found the cause of vacuum bursts
- CDF - Will close end plug next week
- Alignment - Completed a 100+ rolls in the Tevatron

August 31, 2007 - September 7, 2007
- Linac: I- Dome power trouble
- Booster: Cable pulls done
- Recycler: New DCCT section installed and under vacuum
- NuMI: Drain cleaning complete n all underground areas
- MuCool: Shielding under hatch complete

August 24, 2007 - August 31, 2007
- Booster: cable pulls complete
- MI: collimator work 45% complete
- TeV: A1 warmed up to look for leaks
- NuMI: target pile chiller maintenance complete
- FESS: 18 of 19 poles installed

August 17, 2007 - August 24, 2007
- Shutdown summary

August 10, 2007 - August 17, 2007
- Shutdown summary

August 6, 2007 - August 10, 2007
- Shutdown work begins – Week one of ten weeks
- A large crane will be taking up 20 parking spots next week while it assists in the MTA beamline installation just off of Linac

August 3, 2007 - August 6, 2007
- Two stores provided 29 hours and 13 minutes of luminosity
- Linac had quadrupole problems
- Kautz Road Substation has planned shutdowns
- TeV quenched during pre-shutdown studies
- 10 week shutdown begins

August 1, 2007 - August 3, 2007
- Two stores provided 44 hours and 49 minutes of luminosity
- CDF fixes SVX high voltage problem
- MI has power supply trouble (HT828)
- MiniBooNE horn trips

July 30, 2007 - August 1, 2007
- Two stores provided 43 hours and 14 minutes of luminosity
- Shutdown intensity reduction begins
- CDF has beam monitor power supply problem
- DRF1 has ramp card trouble

July 27, 2007 - July 30, 2007
- Three stores provided 59 hours and 4 minutes of luminosity
- LRF3 power amplifier tube replaced
- Recycler reestablishes their new damper system
- Part of CDF detector trips off
- Recycler stash lost during control card change
- I- Source has cooling problem

July 25, 2007 - July 27, 2007
- Two stores provided 28.75 hours of luminosity.
- Tevatron Quench

July 23, 2007 - July 25, 2007
- Two stores provided 23 hours and 15 minutes of luminosity
- P1 transfer line trips
- TeV quench
- 20mA of stash lost
- BRF13 LCW leak

July 20, 2007 - July 23, 2007
- Two stores provided 47 hours and 36 minutes of luminosity
- E4 wet engine replaced
- Operators switched to the H- Source
- 23E10 of antiprotons lost from Recycler
- Store 5567 aborted

July 18, 2007 - July 20, 2007
- Two stores provided 34 hours and 17 minutes of luminosity
- Power glitch due to thunderstorm trips off devices
- LRF3 problems after power glitch
- Energy mismatch between MI and Recycler found 6

July 16, 2007 - July 18, 2007
- Three stores provided 28 hours and 40 minutes of luminosity
- Store 5554 quenched
- NuMI horn has LCW leak - NuMI off until after shutdown
- Booster RF problem
- A1, P1, and F0 vacuum burst
- Summer shutdown begins August 6

July 13, 2007 - July 16, 2007
- Four stores provided 59 hours and 18 minutes of luminosity
- MTest held off due to HP3US transformer failure
- LRF3 tripped off on vacuum inhibit

July 11, 2007 - July 13, 2007
- One store provided 54 minutes of luminosity
- Feeder 89-1 tripped off due to power supply

July 9, 2007 - July 11, 2007
- Two stores provided 43 hours and 9 minutes of luminosity
- Booster vacuum gauge causes GMPS trips
- MIRF11 trips cause NuMI trips
- MT5Q2 holds off MTest
- ARF4 problems

July 6, 2007 - July 9, 2007
- Four stores provided 65 hours and 8 minutes of luminosity
- MI abort kickers still tripping
- Power glitch knocks off Linac, Booster, and MI RF - stash, stack, and store survive
- Stack lost
- TEL2 trips off
- Meson M02-5 interlock problems

July 4, 2007 - July 6, 2007
- Two stores provided 22 hours and 10 minutes of luminosity
- MI suffering from kicker trips
- Recycler looses small portion of stash
- Recycler has emittance problems
- TeV quench during study
- H- Source output dropping

July 2, 2007 - July 4, 2007
- Three stores provided 42 hours and 36 minutes of luminosity
- Switchyard has QXR trouble
- Pbar lithium lens trip
- Recycler has electron Cooling problem

June 29, 2007 - July 2, 2007
- Four stores provided 58 hours and 23 minutes of luminosity
- TeV D1 and F4 wet engine problems
- Lithium lens trips off

June 27, 2007 - June 29, 2007
- Two stores provided 25.5 hours of luminosity.
- Lightning strike delays shot setup.
- MTest once again taking beam.

June 25, 2007 - June 27, 2007
- One store provided 19 hours of luminosity.
- Tevatron Quench.
- Tev water leak in PBar Pre-Vault enclosure.

June 22, 2007 - June 25, 2007
- Three stores provided 53 hours and 30 minutes of luminosity
- Tevatron Quench
- AP2 vacuum leak

June 20, 2007 - June 22, 2007
- Two stores provided 38 hours and 55 minutes of luminosity
- MTest area ready and waiting for it next user
- Booster High Level RF monitor trip
- NuMI horn trip due to flake of paint

June 18, 2007 - June 20, 2007
- Four stores provided 23 hours and 30 minutes of luminosity
- Store 5501 quenched
- Humidity causes MI abort

June 15, 2007 - June 18, 2007
- Three stores provided 56 hours and 45 minutes of luminosity.
- MI and Debuncher kicker problems.
- High temperature problems on MI water systems.
- 144e10 lost in the stash.

June 13, 2007 - June 15, 2007
- Two stores provided 23 hours and 4 minutes of luminosity
- MI kicker problems continue
- MI RF LCW leak discovered
- Store 5492 quenched
- Pbar had trouble stacking
- A2 cryo system delayed TeV ramp

June 11, 2007 - June 13, 2007
- Three stores provided 26 hours and 37 minutes of luminosity
- Store 5485 lost due to A0 breaker trip
- MI suffers from kicker trips

June 8, 2007 - June 11, 2007
- Four stores provided 60 hours and 53 minutes of luminosity
- Recycler stash lost
- MI kicker problems

June 6, 2007 - June 8, 2007
- Two store provided 29 hours and 37 minutes of luminosity
- BRF18 problem lowered Booster intensity for about 10 hours
- KRF3 had phase problems

June 4, 2007 - June 6, 2007
- Two stores provided 39 hours and 5 minutes of luminosity
- Pbar experts conduct equalizer studies
- MIPS loop trips causes loss of antiprotons from stash
- TeV quench during shot setup
- TeV A4 air compressor motor fails

June 1, 2007 - June 4, 2007
- Three stores provided 69 hours and 21 minutes of luminosity
- Switchyard ODH alarms due to high humidity
- Linac has trouble with KRF2
- Booster RF problems

May 30, 2007 - June 1, 2007
- Three stores provided 43 hours and 10 minutes of luminosity
- Booster GMPS trips off
- MI VCBs open
- TEL2 has problem

May 28, 2007 - May 30, 2007
- Two store provided 39 hours and 47 minutes of luminosity
- MI-10L PS VCB disabled - MI-20L PS VCB brought online
- More MI and MiniBooNE beam conflicts

May 25, 2007 - May 29, 2007
- Three stores provided 43 hours and 32 minutes of luminosity
- MiniBooNE turned off during antiproton injection to TeV due to MI aborts
- Network storms cause ACNET problems
- H- Source driver power supply replaced
- Recycler stash lost twice
- MI trip causes partial loss of stash

May 23, 2007 - May 25, 2007
- Two stores provided 45 hours and 35 minutes of luminosity
- Lithium Lens develops leak
- LRF3 driver fails

May 21, 2007 - May 23, 2007
- Three stores provided 34 hours and 13 minutes of luminosity
- Preaccelerator switches to H- Source
- TeV aborted - no beam
- Antiproton target position moved
- TeV quenched with only protons

May 18, 2007 - May 21, 2007
- Four stores provided 28 hours and 50 minutes of luminosity.
- I- Source sparking
- Pbar's Lithium Lens transformer fails
- Store 5437 aborted
- MiniBooNE pump fails
- TeV quenches during study
- Store 5444 aborted
- Linac quadrupole power supply problems
- TeV C2 power supply problems
- I- Source water resistor problems

May 16, 2007 - May 18, 2007
- One store provided 11 hours and 45 minutes of luminosity
- LRF3 power amplifier changed
- Recycler lost half of its stash due to a power supply
- Pbar uses new helix to stash antiprotons
- Booster beam valve closes

May 14, 2007 - May 16, 2007
- Two stores provided 27 hours of luminosity
- Pelletron problems
- MTest (T963) completes their test run at Fermi
- I- Source power supply trips off
- CDF access to fix silicon cooling

May 11, 2007 - May 14, 2007
- Three stores provided 55 hours and 10 minutes of luminosity
- TeV conducts destructive end-of-store study
- Two transfers lost during stash
- ORBUMP power supply fails

May 9, 2007 - May 11, 2007
- One store provided 15 hours and 12 minutes of luminosity
- Pbar conducts reverse proton studies
- Required Safety system testing was completed
- 140 maintenance jobs and several studies were successfully coordinated around the safety system tests

May 7, 2007 - May 9, 2007
- Two stores provided 42 hours and 37 minutes of luminosity
- Cryo repairs B0 wet engine
- Recycler power supply springs leak
- Recycler reverts to old damper system
- Safety system testing begins on Thursday, 5/10/07
- Check the Run Coordinator's log for a schedule of events

May 4, 2007 - May 7, 2007
- Four stores provided 64 hours and 18 minutes of luminosity
- E0 cold compressor problems
- Recycler power supply springs leak
- LRF3 fails

May 2, 2007 - May 4, 2007
- Two stores provided 31 hours and 13 minutes of luminosity
- New MTest experiment begins (T963)
- Linac has LRF4 and KRF3 problems
- Recycler reverts to old damper board

April 30, 2007 - May 2, 2007
- One store provided 24 hours and 54 minutes of luminosity
- TeV quench due to separator spark - no beam
- TeV QPM problem
- Lithium lens power supply voltage re-taped

April 27, 2007 - April 30, 2007
- Four stores provided 50 hours and 49 minutes of luminosity
- Store 5379 quenched
- Many Lithium Lens power supply trips due to over temperature
- Pbar Debuncher cooling problem - tunnel access needed
- Booster damper trip
- Store 5384 aborted due to lightning glitch

April 25, 2007 - April 27, 2007
- Three stores provided 35 hours and 13 minutes of luminosity
- Pbar's Lithium Lens power supply over heats
- Stuck LCW valve on KRF3 halts beam
- Store 5376 aborted

April 23, 2007 - April 25, 2007
- Three stores provided 39 hours and 55 minutes of luminosity
- Pbar transport magnet has hose leak
- Sinkhole found near AP0 service building
- Linac has KRF4 problems
- TeV separator (A49) trouble
- MTest T967 completes run
- MIRF9 trip causes NuMI trip

April 20, 2007 - April 23, 2007
- Three stores provided 57 hours and 18 minutes of luminosity
- LRF2 required more work
- Store 5366 quenched due to separator spark
- MECAR problems causes MI trouble

April 18, 2007 - April 20, 2007
- Two stores provided 34 hours and 2 minutes of luminosity
- New MTest experiment begins: T967
- Lithium lens power supply trips
- LRF2 requires more work
- TeV store 5358 quenches
- ARF4 fails - ARF3 takes its place

April 16, 2007 - April 18, 2007
- Two stores provided 33 hours and 20 minutes of luminosity
- Linac repairs KRF4
- Stash lost due to power glitch
- Fire alarms clear out MCR

April 13, 2007 - April 16, 2007
- Four stores provided 55 hours and 9 minutes of luminosity
- MiniBooNE auto tune problems
- I- Source extractor power supply fails
- TRF7 trips
- Recycler has damper problems

April 11, 2007 - April 13, 2007
- Two stores provided 36 hours and 47 minutes of luminosity
- LRF2 has station and water pump problems
- MI-20L power supply fails
- TeV detects earthquake in Mexico

April 9, 2007 - April 11, 2007
- TeV A2 wet engine required repair
- MiniBooNE pulsed its horn
- Linac suffers many LRF2 trips
- MiniBooNE resumes taking beam
- Accumulator kicker problems
- MTest (T964) completes its run
- ComEd power glitch aborts store 5345

April 6, 2007 - April 9, 2007
- Four stores provided 40 hours and 47 minutes of luminosity
- Operations begins running MiniBooNE power supplies
- Store 5339 aborted

April 4, 2007 - April 6, 2007
- One store provided 26 hours and 32 minutes of luminosity
- MTest T964 resumes taking beam
- Stash lost

April 2, 2007 - April 4, 2007
- One store provided 18 hours and 28 minutes of luminosity
- MTest T950 experiment completes its run
- Preaccelerator switched to the I- Source
- Recycler had emittance problems
- 13-hour shutdown for CDF on 4/3/07
- TeV store quenches during squeeze

March 30, 2007 - April 2, 2007
- Two stores provided 33 hours and 18 minutes of luminosity
- TeV suffers two quenches, store 5315 lost
- Booster and Pbar have kicker problems
- H- Source trips continue
- TeV sector B3 bus work cabinet faulted
- 12 hour shutdown for CDF on 4/3/07

March 28, 2007 - March 30, 2007
- Two stores provided 32 hours and 34 minutes of luminosity
- MS2 looses power for 30 minutes
- Power loss in TeV sector A50 due to ground water last 9.5 hours
- H- Source vacuum gauge problems
- TeV F4 quench ends store 5306

March 26, 2007 - March 28, 2007
- Two stores provided 44 hours and 18 minutes of luminosity
- TEL1 power supply LCW leak
- NuMI held off 3 hours due to power supply and broken air conditioning
- Pbar target rotation problems
- MTest experiments end their run

March 23, 2007 - March 26, 2007
- Four stores provided 59 hours and 17 minutes of luminosity
- Recycler suffered from transverse cooling problems
- Preaccelerator 750 KeV area buncher trips
- MTest began running 8 GeV beam
- Store 5297 quenched
- Recycler conducts electron cooling alignment
- MI and Booster suffer many trips due to high temperature in Booster LLRF room

March 21, 2007 - March 23, 2007
- Two stores provided 36 hours and 55 minutes of luminosity
- Pbar continues with stack tail equalizer studies
- TeV quench
- New MTest experiments (T950 & T964) begin taking beam

March 19, 2007 - March 21, 2007
- Two stores provided 41 hours and 6 minutes of luminosity
- Booster RF station 18 sparking - bypassed
- Pbar AP3 LCW leak - repaired
- Store 5292 low luminosity
- Pelletron LCW leak - repaired

March 16, 2007 - March 19, 2007
- Three stores provided 60 hours and 16 minutes of luminosity
- NuMI finds their LCW leak in MI-65
- LRF4 down for six hours
- H- Source sparking
- TeV tune trouble
- Pbar target motor fails
- Pbar begins 8-hour equalizer study

March 14, 2007 - March 16, 2007
- Three stores provided 38 hours of luminosity
- Water leak on ECool Chiller
- access for Booster RF problems

March 12, 2007 - March 14, 2007
- Three stores provided 26 hours and 25 minutes of luminosity
- Feeder repairs held off TeV on Monday
- LRF3 and 4 cause Linac problems
- H- Source Sparking
- Booster access Wednesday afternoon to repair RF

March 9, 2007 - March 12, 2007
- Three stores provided 53 hours and 23 minutes of luminosity
- Pbar tuning program needed reseting
- Pelletron suffers from communications problem
- TeV quenched just before store was to be established
- TeV and Pbar conduct four hours of maintenance on Monday

March 7, 2007 - March 9, 2007
- Two stores provided 44 hours and 44 minutes of luminosity
- Pbar conducting reverse protons studies
- NuMI conducting 11 batch slipstacking studies
- Feeder work on Monday will hold off beam in TeV

March 5, 2007 - March 7, 2007
- Two stores provided 35 hours and 53 minutes of luminosity
- NuMI conducts 11 batch slipstacking studies
- Pbar target rotation repaired
- Pbar PreVault LCW leak found and repaired
- TeV suffers proton coalescing problem

March 2, 2007 - March 5, 2007
- Three stores provided 47 hours and 55 minutes of luminosity
- Meson experts conduct calibration foil tests
- TeV ground fault resolved
- LRF4 & 5 repaired
- Store 5259 aborted
- Pbar target stops rotating

February 28, 2007 - March 2, 2007
- One store provided 15 hours and 52 minutes of luminosity
- Two stores, just moments away from being established, were lost due to tune problems

February 26, 2007 - February 28, 2007
- Two stores provided 39 hours and 47 minutes of luminosity
- Recycler cooling delays shot
- NuMI horn problems

February 23, 2007 - February 26, 2007
- Three stores provided 61 hours and 3 minutes of luminosity
- LRF5 repaired
- MI thermocouple problems
- MTest experimenters complete their tests
- NuMI has kicker temperature trouble
- Store 5245 sets record with a luminosity of 292.26E30

February 21, 2007 - February 23, 2007
- Three stores provided 34 hours and 10 minutes of luminosity
- ComEd power glitch causes quench and the loss of store 5238
- Feeder 32 fault causes CHL nitrogen plant to trip
- MTest (T953) begins taking beam

February 19, 2007 - February 21, 2007
- Two stores provided 35 hours and 56 minutes of luminosity
- Electron Cooling problems delay shot
- Accumulator kicker causes the loss of three transfers

February 16, 2007 - February 19, 2007
- Two stores provided 49 hours and 21 minutes of luminosity
- LRF3 water skid trouble
- Store 5231 lost due to quench at B0
- TeV BPM VME problems
- Store 5234 sets New Record Luminosity of 285.03E30

February 14, 2007 - February 16, 2007
- Two stores provided 36 hours and 19 minutes of luminosity
- H- Source suffered from sparking and intensity problems
- ACNET trouble due to bug in BPM program
- TeV powers supplies trip due to LCW leak
- Store 5229 quenched due to LCW leak

February 12, 2007 - February 14, 2007
- MI trips linked to H- problems
- NuMI trips linked to H- problem and auto-tune bug
- LRF3 water skid power supply failed
- Store 5226 set Record Luminosity with 284.3E30
- Store 5226 lost due to quench

February 9, 2007 - February 12, 2007
- Two stores provided 45 hours and 23 minutes of luminosity
- NuMI suffered from bad beam position problems
- MI sets intensity record of 3.5E10 protons at 120 GeV
- Recycler has trouble with Electron Cooling
- D0 needs access to investigate Sunday trips

February 7, 2007 - February 9, 2007
- Three store provided 35 hours and 59 minutes luminosity
- Booster troubled by BRF6 trips
- Store 5218 aborted - no quench
- Recycler has electron cooling problem
- Linac KRF6 looses phase lock

February 5, 2007 - February 7, 2007
- Two stores provided 29 hours and 51 minutes of luminosity
- Feeder 36 trip due to oil leak
- Pbar and Recycler have kicker problems
- Booster RF failures requires tunnel access
- MCR suffers from controls problems

February 2, 2007 - February 5, 2007
- One store provided 13 hours and 8 minutes of luminosity
- Recycler had stochastic cooling problems
- TeV sextupoles commissioned and operating
- MI controls developed serial link driver problems
- Store 5208 aborted
- TeV and Recycler have kicker troubles

January 31, 2007 - February 2, 2007
- One store provided 3 hours and 26 minutes of luminosity
- Store 5201 aborted due to RF trip
- TeV sector A1 suffers vacuum problems
- TeV sectors A1, 2, & 3 cryo systems warmed up
- H- Source intensity drops slightly

January 29, 2007 - January 31, 2007
- Two stores provided 41 hours and 48 minutes of luminosity
- MI/Recycler and NuMI off for HV101 replacement
- Store 5199 lost due to quench
- Store 5201's luminosity of 278.08E30 set New Record

January 26, 2007 - January 29, 2007
- Three stores provided 67 hours and 40 minutes of luminosity
- Beam commissioning to the Meson MTest area
- NuMI magnet HV101 developed LCW leak
- Linac Klystron Debuncher LCW pump failed
- MIRF10 trips
- NuMI LCW leak found in MI-60
- MI, Pbar, SY, and NuMI off on Tuesday through Friday to replace HV101

January 24, 2007 - January 26, 2007
- Two stores provided 23 hours and 18 minutes of luminosity
- D-Zero needed a 10 hours access to make detector repairs
- All the accelerators except MI and Recycler, used this time for maintenance
- Pbar replaced a magnet and its antiproton target

January 22, 2007 - January 24, 2007
- Two stores provided 26 hours and 32 minutes of luminosity
- H- Source water resistor replaced
- Slow spill to Meson
- Feeder 36 faults cause three power glitches

January 19, 2007 - January 22, 2007
- Four stores provided 57 hours and 52 minutes of luminosity
- MI has RF, vacuum, and beam position problems
- Recycler emittance trouble
- Linac had LRF2 trouble
- Sparking limits the H- Source output
- TeV B17 separator fails

January 17, 2007 - January 19, 2007
- Three stores provided 39 hours and 6 minutes of luminosity
- NuMI LCW system leak not in NuMI tunnels
- TeV ramp lost due to lead flow - no quench
- Store 5189 set record with an initial luminosity of 277.57E30

January 15, 2007 - January 17, 2007
- Three stores provide 34 hours and 37 minutes of luminosity
- Store 5177 quenched
- Store 5179 aborted
- NuMI trips due to ground faults and beam position problems

January 12, 2007 - January 15, 2007
- Four stores provided 65 hours and 10 minutes of luminosity
- Store 5175 set record with a luminosity of 258.23E30
- Beam sent to M01
- NuMI horn and beam permit problems
- Earthquake S-SW of Kuril Islands
- Pelletron vacuum and Electron cooling troubles

January 10, 2007 - January 12, 2007
- Two stores provided 41 hours and 20 minutes of luminosity
- MI SA power supply current monitor failing
- TeV develops LCW leak
- Meson to take beam to MO1 this weekend

January 8, 2007 - January 10, 2007
- Three stores provided 26 hours and 30 minutes of luminosity
- Store 5166 set a record with a luminosity of 151.79E30
- Store 5166 aborted due to power supply trip
- Pbar shutter problems hinder stashing

January 5, 2007 - January 8, 2007
-Three stores provided 63 hours and 53 minutes of luminosity
- Pbar needed access to repair equipment
- MI-60 power supply leak needs day to repair

January 3, 2007 - January 5, 2007
- Three stores provided 42 hours and 7 minutes of luminosity
- MiniBooNE still off for absorber work

December 21, 2006 - January 3, 2007
- 13 stores provided luminosity to the experiments
- Store 5155 set a luminosity record with 248.2E30
- 3 quenches occurred with 2 ending stores
- NuMI turned off for absorber work

More Information
For Tevatron luminosity charts and the current status of Fermilab's accelerators and detectors (live!), please go to Fermilab Now

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