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2010 Accelerator Update Archive
December 20, 2010 - December 22, 2010
- Three stores provided !32 hours of luminosity
- Problems with two Linac quadrupole power supplies
- Cryo system technicians work on TEV sector D1 wet engine
- TEV quench during checkout
- JASMIN's run at MTest ends
December 17, 2010 - December 20, 2010
The Integrated Luminosity for the period from 12/13/10 to 12/20/10 was 66.31 inverse
picobarns. NuMI reported receiving 7.62E18 protons on target during this same
period.
- Five Stores provided ~62 hours of luminosity
- Operations had trouble with a Linac RF station (LRF3)
- Operators tuned the Linac backup source (I- Source)
December 15, 2010 - December 17, 2010
- Three stores provided ~36.1 hours of luminosity
- MI-52 Septa repaired
- NuMI recovered its target LCW system
- TRF6 repaired and brought online
- TeV sector A3 wet engine flywheel repaired
- TeV personnel conduct 150 GeV studies
- CDF access between stores to recover detector
December 13, 2010 - December 15, 2010
- Three stores provided ~36 hours of luminosity
- Store 8361 aborted due to a CIA (vacuum) crate failure
- MI-20 power supply door switch repaired
- Cryo system techs worked on wet engines at TeV sectors A3 and C1
- MI-52 Septa tripped off, which held off the T-944 beam
December 10, 2010 - December 13, 2010
The Integrated Luminosity for the period from 12/6/10 to 12/13/10 was 53.02 inverse
picobarns. NuMI reported receiving 7.1E18 protons on target during this same period.
- Five stores provided ~57 hours of luminosity
- Booster configures RF to operate on one pre-pulse
- Store 8351 quenched due to separator spark
- I- Source vacuum pump fails - H- brought online
- TRF5 fiber module repaired
- ECool corrector magnet power supply settings reloaded
December 8, 2010 - December 10, 2010
- Four store provided ~30.75 hours of luminosity
- TeV quench during shot setup due to RF trip
- Meson FTBF T-944 (JASMIN) experiment begins taking beam
- MI accessed to fix vacuum leaks
- TeV conducts end-of-store and crystal collimator studies
- Shot setup aborted due to problem with MI bend power supply
December 6, 2010 - December 8, 2010
- Three stores provided ~54.25 hours of luminosity
- Operators tuned the Pbar transfer line
- Operators tuned the Proton Source
- Operators tuned MI
- A kicker pre-fire caused a loss of antiprotons during transfer
December 3, 2010 - December 6, 2010
The Integrated Luminosity for the period from 11/29/10 to 12/6/10 was 61.97 inverse
picobarns. NuMI reported receiving 8.1E18 protons on target during this same period.
- Five stores provided ~33.5 hours of luminosity
- Linac personnel repaired LRF1 power amplifier vacuum problem
- Cryo system and vacuum technicians work on TeV
- Operators find low beta quadrupole ground fault, caused by LCW leaks
- Switchyard tuning required for T-1008 beam
- Store 8335 quenched due to a broken crankshaft for the C1 wet engine
December 1, 2010 - December 3, 2010
- Three stores provided ~42.25 hours of luminosity
- New Meson FTBF experiment T-1008 begins taking beam
- clogged D0 pond water inlet pipe forced experiment to turn off detector
- Booster 400 MeV Chopper repaired
November 29, 2010 - December 1, 2010
- Three stores provided ~42.25 hours of luminosity
- Pbar investigated Pbar Debuncher optical delay issues
- Store 8316 quenched due to instability in a transfer line
- CDF, D0, TeV A-E, and Pbar accessed for maintenance work
- Proton Source switched from the I- Source to the H- Source
- TeV suffered small luminosity loss due to antiproton emittances
November 24, 2010 - November 29, 2010
The Integrated Luminosity for the period from 11/22/10 to 11/29/10 was 57.5 inverse
picobarns. NuMI reported receiving 8.4E18 protons on target during this same period.
- Eight Stores provided ~93.5 hours of luminosity
- Pbar accessed to repair PLC
- Low TeV luminosities improved by tune and angle adjustments
- TeV quench during shot setup
- TeV kicker tripped off due to low insulating gas
November 22, 2010 - November 24, 2010
- Three stores provided ~38.75 hours of luminosity
- Store 8291 aborted due to lightning strike
- NuMI trips due to exhaust fan breaker problems
- Store 8892 quenched due to HFU failure
- Cryo system techs conduct wet engine maintenance
- MTA takes special run of beam
November 17, 2010 - November 19, 2010
- Five stores provided ~32.75 hours of luminosity
- Store 8277 aborted due to a TRF2 spark
- T-979 came online as a secondary MTest experiment
- Store 8278 quenched due to a separator spark
- Store 8283 quenched due to a separator spark
November 15, 2010 - November 17, 2010
- Four stores provided ~33.75 hours of luminosity
- Operations aborted store 8268 when Feeder 46A tripped off
- Pelletron failure caused lower luminosity stores during repairs
- MiniBooNE accessed MI-12B
November 12, 2010 - November 15, 2010
The Integrated Luminosity for the period from 11/8/10 to 11/15/10 was 49.02 inverse
picobarns. NuMI reported receiving 7.18E18 protons on target during this same
period.
- Three stores provided ~26.25 hours of luminosity
- CDF accesses to repair broken detector wire
- Most of the complex also accesses to repair equipment
- NuMI stuck LCW valve repaired
- TeV quenched during turn-on
November 10, 2010 - November 12, 2010
- Three stores provided ~42.5 hours of luminosity
- Pbar Accumulator power supply LCW leak repaired
- Electron Cooling problems fixed
- CDF needs to repair their detector on Saturday; the repair might take from 10 hours to two days
November 8, 2010 - November 10, 2010
- Three stores provided ~35 hours of luminosity
- FESS continues to repair CUB boiler #2
- TeV access to repair sector D11 power lead
- Pbar magnet (PMag) ground faulted and replaced
- Pbar LCW leaks fixed
- TeV E1 wet engine repair today, 11/10/10
November 5, 2010 - November 8, 2010
The Integrated Luminosity for the period from 11/1/10 to 11/8/10 was 55.22 pb-1.
NuMI reported receiving 6.3E18 protons on target during this same period.
- Six stores provided ~62.75 hours of luminosity
- Linac RF causes small problem
- 400 MeV area corrector power supply replaced
- NuMI has problems with Lambertson trips
November 3, 2010 - November 5, 2010
- Two stores provided ~25.75 hours of luminosity
- TeV sector C1 wet engine need overhaul
- Pbar magnet LCW leak repaired
- TeV quench, no beam
- Pbar Debuncher injection Septa repaired
- MI power supply loop controller problems fixed
- Meson FTBF T-1004 experiment begins taking beam
November 1, 2010 - November 3, 2010
- Four stores provided ~31 hours of luminosity
- NuMI taking beam
- Pelletron repaired
- TeV abort kicker repaired
- TeV quench
October 29, 2010 - November 1, 2010
The Integrated Luminosity for the period from 10/25/10 to 11/1/10 was 59.99 inverse
picobarns.
NuMI reported receiving no protons on target during this same period due to target
work.
- Five stores provided ~44 hours of luminosity
- NuMI conducted target scans
- Pbar operated on a 2.4 second rep rate
- D0 need 10-hour access to fix detector
- Pelletron repairs in progress
- NuMI to start taking beam today, 11/1/10
October 27, 2010 - October 29, 2010
- Four stores provided ~35.75 hours of luminosity
- TeV conducts TEL and Crystal collimator studies
- Pelletron back online
- MI coalescing problems fixed
- Booster RF problems fixed
- NuMI plans to resume normal operations on Monday morning, 11/1/10
October 25, 2010 - October 27, 2010
- Four stores provided ~39.25 hours of luminosity
- TeV sector B4 wet engine flywheel repaired
- LRF1 surge resistor replaced
- Poor TeV proton load lifetime fixed
- Pbar off today, 10/27/10, for vacuum work
October 22, 2010 - October 25, 2010
The Integrated Luminosity for the period from 10/18/10 to 10/25/10 was 51.64 inverse
picobarns. NuMI reported receiving no protons on target during this same period due to target
work.
- Five stores provide ~59.25 hours of luminosity
- Electron Cooling problems
- Store 8199 aborted due to beam valves closing
- Booster vacuum burst
- Booster kicker problem repaired
- Wet engine repair today, 10/25/10
October 20, 2010 - October 22, 2010
- CALICE T-978 taking beam
- JASMIN equipment installed in Pbar
- Pbar target replaced
- Store 8188 aborted due to false quench indication
- Recycler stash lost
- MI low-level RF rebooted
- Store 8194 aborted due to inadvertent voltage change
- TeV quench during orbit check
- Meson power supply trip
October 18, 2010 - October 20, 2010
- Four stores provided ~29 hours luminosity
- Pelletron problems required access to repair
- TeV F4 pond water pump strainer clogged
- Vacuum valves closing caused TeV abort
- Recycler, MiniBooNE, Pbar, and Booster accesses
October 15, 2010 - October 18, 2010
The Integrated Luminosity for the period from 10/11/10 to 10/18/10 was 53.26 inverse picobarns.
NuMI reported receiving no protons on target during this same period due to target work.
- Six stores provided ~65.25 hours of luminosity
- Antiproton TLG rep-rate studied
- CALICE experiment T-978 returned to the MTest line
- Pbar Accumulator PLC rebooted
October 13, 2010 - October 15, 2010
- Three stores provided ~33.5 house of luminosity
- Linac RF repaired
- Store 8171 aborted
October 11, 2010 - October 13, 2010
- Three stores provided ~30.75 hours of luminosity
- MI develops problems
- TeV quench during shot setup
- MI access to repair MIRF9 and 15
October 8, 2010 - October 11, 2010
The Integrated Luminosity for the period from 10/4/10 to 10/11/10 was 48.65 inverse
picobarns.
NuMI reported receiving no protons on target during this same period due to target
work.
- Four Stores provided ~39.75 hours of luminosity
- TeV quench during shot setup
- TeV sector A4 dry engine failed after quench
- Cryo system techs overhauled dry engine
October 6, 2010 - October 8, 2010
- Four stores provided ~36.5 hours of luminosity
- MI-52 Lambertson vacuum leak repaired
- TRF3 power amplifier repaired
- Linac low-level RF system problems
October 4, 2010 - October 6, 2010
- Four stores provided ~26.5 hours of luminosity
- Meson Septa develops vacuum leak
- TeV sector C4 helium leak required access to fix
- Many machines conducted maintenance during TeV access
- TeV sector C2 dump failure
- MI prepared for access to fix Lambertson vacuum issue
October 1, 2010 - October 4, 2010
The Integrated Luminosity for the period from 9/27/10 to 10/4/10 was 62.73 inverse picobarns.
NuMI reported receiving no protons on target during this same period due to target work.
- Five stores provided ~64.5 hours of luminosity
- Access for MI and Booster work
- Store 8137 aborted due to CAMAC crate problem
- MI VCB causes problems
September 29, 2010 - October 1, 2010
- Four stores provided ~ 39.25 hours of luminosity
- Controls rebooted the Time Line Generator
- TeV sector B3 Dump power Supply repaired
- Two cryo system front ends rebooted
- MI-50 service building breaker trip
- Booster and MI in access this morning
September 27, 2010 - September 29, 2010
- Three stores provided ~39 hours of luminosity
- Recycler kicker prefire
- TeV High Order Power Supply worked on
- Controls will reboot Time Line Generator
September 24, 2010 - September 27, 2010
The Integrated Luminosity for the period from 9/20/10 to 9/27/10 was 46.22 inverse picobarns.
NuMI reported receiving no protons on target during this same period due to target work.
- Four stores provided ~43.5 hours of luminosity
- TeV D1 BPMs problems
- TeV quench during shot setup
- Time Line Generator problems
- Linac technicians worked on LRF3
- NuMI will be off for a month
September 22, 2010 - September 24, 2010
- Three store provided ~25 hours of luminosity
- Store 8106 aborted due to a yard breaker trip
- Quadrupole power supply problems delayed a shot
- TeV turned off for LCW system repairs
September 20, 2010 - September 22, 2010
- Four stores provided ~32.5 hours of luminosity
- MTest experiments T992 and T995 taking beam
- Separator spark caused 7E30 loss in luminosity
- TeV quench during shot setup
- MiniBooNE MI-12 air conditioning fixed
- NuMI personnel found target water leak
September 17, 2010 - September 20, 2010
The Integrated Luminosityfor the period from 9/13/10 to 9/20/10 was 60.37 pb-1.
NuMI reported receiving 5.2E18 protons on target during this same period.
- Five stores provided ~63.5 hours of luminosity
- Meson MTest experiments T992 and T995 taking beam
- NuMI down to repair target helium leak
- LRF5 PA change
- MI suffers from kicker problems
- GMPS control system cable repaired
September 15, 2010 - September 17, 2010
- Three stores provided 33.5 hours of luminosity
- TRF3 repaired
- Trouble with TeV VME crate
- Temporary fix on MI-10 power supply
- Meson MTest experiments T-992 and T-995 begin taking beam
- TeV SyncLite mirror adjusted
- NuMI turns off for eight days to check target helium leak
September 13, 2010 - September 15, 2010
- Three stores provided ~35 hours of luminosity
- MiniBooNE accessed to check their horn
- TeV end-of-store and machine studies
- MI-30 VCB problems
- TRF3 required power amplifier change
September 10, 2010 - September 13, 2010
The Integrated Luminosityfor the period from 9/6/10 to 9/13/10 was 48.41 inverse picobarns.
NuMI reported receiving 5.62E18 protons on target during this same period.
- Five stores provided ~63.25 hours of luminosity
- Store 8079 aborted near to its termination due to a vacuum control card problem
- 400 MeV chopper repaired
September 8, 2010 - September 10, 2010
- Five stores provided ~27.5 hours of luminosity
- NuMI beam off due to helium leak and MI kicker problem
- Proton Source was turned off Friday morning for work on Linac, Booster, MI, and NuMI
September 6, 2010 - September 8, 2010
- Four stores provided ~ 25.25 hours of luminosity
- Store 8060 quenched
- NuMI and MiniBooNE accessed their collision halls
September 3, 2010 - September 6, 2010
The Integrated Luminosity for the period from 8/30/10 to 9/6/10 was 37.14 inverse picobarns.
NuMI reported receiving 6.52E18 protons on target during this same period.
- Four stores provides ~47.25 hours of luminosity
- TeV vacuum leak repaired
- Linac personnel repaired LRF1
- RF personnel repaired MIRF6
- BRF6 yard breaker trip
September 1, 2010 - September 3, 2010
- Two stores provided ~24.25 hours of luminosity
- MI vacuum leak fixed
- Linac continues to investigate their breaker issues
- Store 8051 aborted due to F-sector vacuum problem
August 30, 2010 - September 1, 2010
- Three stores provided ~37.75 hours of luminosity
- TeV orbit checks continue
- An AP0 exhaust fan tripped off and inhibited stacking
- Recycler DCCT calibrated
- NuMI extraction kicker high voltage cable reterminated
- MI vacuum problems require access
August 27, 2010 - August 30, 2010
The Integrated Luminosityfor the period from 8/23/10 to 8/30/10 was 41.23 inverse picobarns.
NuMI reported receiving 5.8E18 protons on target during this same period.
- Four stores provided ~40.5 hours of luminosity
- Transfer of antiprotons from the Recycler to the TeV lost
- The TeV quenched twice during shot setups
- MI-30 interlocks dropped due to a PLC failure
August 25, 2010 - August 27, 2010
- Three stores provided ~28 hours of luminosity
- Store 8010 aborted due to an RF trip
- TeV aborted during shot setup
- CUB LCW isolation valves closed
- Store 8017 quenched due to beam position
- MiniBooNE begins taking beam
August 23, 2010 - August 25, 2010
- Four stores provided ~30.5 hours of luminosity
- Linac suffered from RF problems
- MI LCW mixing valve fixed
- CDF and D0 accessed on Monday and Tuesday
August 20, 2010 - August 23, 2010
The Integrated Luminosity for the period from 8/20/10 to 8/23/10 was 4.58 inverse picobarns.
- Three stores provided ~20.75 hours of luminosity
- Many machine studies
- Faulty MI-62 LCW three-way valve fixed
- First store (7994) established 8/21/10 at 11 AM
- Pbar lithium lens replaced
- MI kicker problems
- NuMI kicker problems
August 18, 2010 - August 20, 2010
- Startup activities continue
- Tevatron shot on Saturday
July 23, 2010 - July 30, 2010
- Shutdown work on schedule
- Two unplanned power outages occurred
July 19, 2010 - July 23, 2010
- Fermilab Shutdown Report
July 16, 2010 - July 19, 2010
- Two stores provided ~36.75 hours of luminosity
- Stack lost
- LRF1 problems
- Power supplies turned off everywhere but the TeV on Saturday in preparation for shutdown
- Many machine studies
- Shutdown began at 8 AM, 7/19/10
July 14, 2010 - July 16, 2010
- Four stores provided ~34 hours of luminosity
- Booster GMPS, Linac LRF5, and the MI-8 line all caused problems
- Booster repaired a kicker
- All proton beam off at midnight tonight, 7/16/10
- TeV store will collide until Sunday midnight, 7/18/10
- Shutdown begins at 8 AM on Monday, 7/19/10
July 12, 2010 - July 14, 2010
- Four stores provided ~39.25 hours of luminosity
- Preaccelerator switched to H- Source
- Recycler kicker caused the loss of one antiproton transfer
- Pelletron repaired
- MTA reported finding their tuning problem
- P1 line vacuum burst
July 9, 2010 - July 12, 2010
The Integrated Luminosityfor the period from 7/5/10 to 7/12/10 was 51.16 pb-1.
NuMI reported receiving 4.89E18 protons on target during this same period.
- Six stores provided ~55 hours of luminosity
- Pbar Debuncher bend bus power supply repaired
- MI Lambertson repaired
- Recycler corrector magnet power supply chassis replaced
- Store 7965 aborted - no quench
- Pelletron access need to make repairs
- MTA will take beam and then make 6-hour access
July 7, 2010 - July 9, 2010
- Four stores provided ~39 hours of luminosity
- MI personnel conducted slow spill studies
- TeV conducts 3x3 study store (7958)
- MI and MINERvA personnel conduct neutrino communications study
- Switchyard power supply repaired
- Pbar Debuncher bend bus current drop
- NuMI shutdown begins 7/12/10
July 2, 2010 - July 7, 2010
The Integrated Luminosityfor the period from 6/28/10 to 7/5/10 was 59.03 inverse picobarns.
NuMI reported receiving 8.37E18 protons on target during this same period.
- Eight stores provided ~95.75 hours of luminosity
- CHL personnel overhaul Pbar dry engine
- I- Source problems
- FESS resolves many hight temperature problems
- Beam power reduction has begun
- Recycler vacuum cascade caused stash loss
- TeV personnel conducts studies
June 30, 2010 - July 2, 2010
- Four stores provided ~38.75 hours of luminosity
- I- Source brought online
- Cause of TeV luminosity jumps found and fixed
June 28, 2010 - June 30, 2010
- Three stores provided ~33.25 hours of luminosity
- NuMI power supply repaired
- TeV quench during shot setup
June 25, 2010 - June 28, 2010
The Integrated Luminosityfor the period from 6/21/10 to 6/28/10 was 57.74 inverse picobarns.
NuMI reported receiving 8.27E18 protons on target during this same period.
- Six stores provided ~54.5 hours of luminosity
- Operators put the TeV through a wet and dry squeeze
- Store 7926 aborted due to a yard breaker trip, no quench
- Store 7929 aborted due to separator spark, no quench
June 23, 2010 - June 25, 2010
- Three stores provided ~18.5 hours of luminosity
- Cryo system techs worked on B3 valve and F1 wet engine
- Storm caused many trips on many systems
- Operators found and fixed an orbit distortion
- D2 vacuum repaired
- ECool personnel reconfigure Pelletron
June 21, 2010 - June 23, 2010
- Four stores provided ~43.5 hours of luminosity
- H- Source dome accessed to stabilize source
- Store 7911 had high antiproton emittances
- NuMI works on Horn power supply
June 18, 2010 - June 21, 2010
- Four stores provided ~46.25 hours of luminosity
- Booster and MI accesses
- A CUB Booster/Pbar LCW pump failed
- Storm caused store 7900 to abort
- TeV B48 separator repaired
June 16, 2010 - June 18, 2010
- Four stores provided ~41 hours of luminosity
- NuMI horn power supply's LCW leak fixed
- HP3DS repaired and brought back online
- Booster, MI and Recycler accessed
June 14, 2010 - June 16, 2010
- Four stores provided ~31.75 hours of luminosity
- FESS resolved MiniBooNE's air conditioning problems
- Operators aborted store 7894
- MI had main bus power supply problems
June 11, 2010 - June 14, 2010
The Integrated Luminosityfor the period from 6/7/10 to 6/14/10 was 63.46 inverse picobarns.
NuMI reported receiving 7.37E18 protons on target during this same period.
- Five stores provided ~53.5 hours of luminosity
- Recycler personnel reset the Pelletron blower
- TeV sector E2 wet engine repaired
- TeV vacuum pumps repaired
- Feeder 97 reset
- Operators raise the H- Source pressure
June 9, 2010 - June 11, 2010
- Three stores provided ~30.75 hours of luminosity
- T-977 conducts detector work
- BRF10 power amplifier replaced
- Antiproton Source studies
June 7, 2010 - June 9, 2010
- Two stores provided ~40 hours of luminosity
- Cryo system technicians worked on TeV wet engines
- Recycler studies
- Booster suffered vacuum problem requiring access
- TeV studies
June 4, 2010 - June 7, 2010
The Integrated Luminosityfor the period from 5/31/10 to 6/7/10 was 68.54 inverse picobarns.
NuMI reported receiving 8.57E18 protons on target during this same period.
- Five stores provided ~64 hours of luminosity
- Booster ion pump problems
- MINERvA (T-977) resumes taking beam
June 2, 2010 - June 4, 2010
- Three stores provided ~35 hours of luminosity
- Store 7867 aborted due to separator spark
- Beam halted and some accelerators turned off for load-shed test
May 31, 2010 - June 2, 2010
- Three store provided ~33.5 hours of luminosity
- Booster has problem with ion pump
- MI flying wire repaired
- Store 7864 quenched due to kicker pre-fire
- Thunder storms cause a number of systems to trip off
May 28, 2010 - May 31, 2010
The Integrated Luminosityfor the period from 5/24/10 to 5/31/10 was 36.88 inverse picobarns.
NuMI reported receiving 8.37E18 protons on target during this same period.
- TeV sector C3 wet engine repaired
- 400 MeV chopper cable re-terminated
- AP0 line airflow work
- FESS repaired AP50 chilled water leak
- Store 7855 quenched at several houses in sector D
- TeV quench during shot setup
May 26, 2010 - May 28, 2010
- Three stores provided ~16 hours of luminosity
- TeV wet engine repaired
- Store 7839 quenched due to poor beam positions
- TeV quench during shot setup due to beam instability
- Pbar cryo system derimed
May 24, 2010 - May 26, 2010
- Three stores provided ~45.25 hours on luminosity
- Pbar repaired LCW leak
- T-1006 and T-995 experiments will begin taking beam 5/26/10
May 21, 2010 - May 24, 2010
- Four stores provided ~38.5 hours of luminosity
- Store 7828 quenched at A3
- Booster down due to kicker problem
- TeV quench during shot setup
- Kautzky valve replaced
- Pbar to make six-hour access on 5/25/10
May 19, 2010 - May 21, 2010
- Three stores provided ~28 hours of luminosity
- Cryo system personnel replaced flywheel for A4 wet engine
- Linac switched from the I- Source to the H- Source
- TeV quench during shot setup due to dipole power supply tripping off
- Linac adjusted the pulse beam width
- Operators searched Switchyard for LCW leaks - none found
May 17, 2010 - May 19, 2010
- Five stores provided ~38.75 hours of luminosity
- T-1005 experiment approved for beam
- BRF18 bypassed
- Linac Klystron LCW leak repaired
- Store 7819 aborted due to CIA crate problem
May 14, 2010 - May 17, 2010
The Integrated Luminosityfor the period from 5/10/10 to 5/17/10 was 61.08 inverse picobarns.
NuMI reported receiving 7.33E18 protons on target during this same period.
- Four stores provided ~37.75 hours of luminosity
- Store 7812 aborted and quenched sectors B0, D0, D1, and F1
- Meson MTest 1005 experiment ready for beam on 5/17/10
- Kautzky valve repaired at D1
- Vacuum valve repaired at D1
May 12, 2010 - May 14, 2010
- Three stores provided ~41.75 hours of luminosity
- MINERvA experiment completes another run at MTest
- Store 7808 aborted due to lightening strike
- Lightening strikes caused other problems
- Booster RF sparking fixed
May 10, 2010 - May 12, 2010
- Four stores provided ~43.25 hours of luminosity
- NuMI Lambertson magnet power supply repaired
- NuMI accesses
May 7, 2010 - May 10, 2010
The Integrated Luminosity for the period from 5/3/10 to 5/10/10 was 58.78 inverse picobarns.
NuMI reported receiving 6.73E18 protons on target during this same period.
- Four stores provided ~47.25 hours of luminosity
- MI RF low/mid level front ends required boot
- Store 7799 quenched at TeV sector D3
- Both the Recycler and Pbar lost a transfer
May 5, 2010 - May 7, 2010
- Three stores provided ~ 37 hours of luminosity
- NuMI investigated a target problem
- Pbar Debuncher kicker power supply repaired
- Pbar extraction Lambertson repaired
- MI Lambertson adjusted
- Store 7795 quenched due to a kicker pre-fire
- D0 makes 10 hour access to repair its silicon detector
May 3, 2010 - May 5, 2010
- Four stores provided ~29.75 hours of luminosity
- TeV quench with no store
- NuMI kicker power supply repaired
- Accumulator kicker power supply repaired
- NuMI develops helium leak
April 30, 2010 - May 3, 2010
The Integrated Luminosity for the period from 4/26/10 to 5/3/10 was 70.55 inverse picobarns.
NuMI reported receiving 8.46E18 protons on target during this same period.
- Four stores provided ~52.5 hours of luminosity
- Pbar LCW leak found and fixed
- TeV quench during shot setup
- TEL2 vacuum leak fixed
- NuMI extraction kicker power supply problems
April 28, 2010 - April 30, 2010
- Three stores provided ~37.75 hours of luminosity
- NTF bend magnet power supply fixed
- MTA took beam to their first multiwire
- Shot delayed due to TeV RF problems
April 26, 2010 - April 28, 2010
- Four stores provided ~43.75 hours of luminosity
- NuMI kicker fluorinert temperature alarm; more flow fixed the problem
- T977, the MINERvA experiment resumes in the Meson MTest line
- Store 7771's luminosity of 386.5E30 comes in as third best
April 23, 2010 - April 26, 2010
The Integrated Luminosityfor the period from 4/19/10 to 4/26/10 was 51.99 inverse picobarns.
NuMI reported receiving 8.69E18 protons on target during this same period.
- Five stores provided ~43.25 hours of luminosity
- Pbar personnel accessed water cage
- CUB column #3 brought online
- Store 7760 aborted due to ground fault indication
- Stack lost due to broken bolt on breaker
April 21, 2010 - April 23, 2010
- Three stores provided ~30 hours of luminosity
- CUB column 3 offline for regeneration
- MTA-MuCool commissioning begins
- Master Substation work completed
- Recycler damper problem fixed
April 19, 2010 - April 21, 2010
- Three stores provided ~26.5 hours of luminosity
- Store 7748 terminated unintentional
- Vacuum work completed at MI-11
- TRF6 water turbine repaired
- Master Substation work will occur on Wednesday afternoon
April 16, 2010 - April 19, 2010
The Integrated Luminosity for the period from 4/12/10 to 4/19/10 was 49.33 inverse picobarns. NuMI reported receiving 6.1E18 protons on target during this same period.
- three stores provided ~69 hours of luminosity
- 402.4E30 a new record store
- LCW leak in Pbar
- Main injector LCW leak
- Main injector vacuum problems
- Problems with ECool transfer line solenoid
April 14, 2010 - April 16, 2010
- Two stores provided ~23 hours of luminosity
- Tevatron cooldown problems
- Main Injector RF 3 way valve problem
- Bad MI-8 line shunt regulator
- New record luminosity store
- Linac buncher problems
April 12, 2010 - April 14, 2010
- Two stores provided ~18.25 hours of luminosity
- Scheduled repair period
- TeV cryogenic recovery problems
- Pbar stacking problems
- MI high Level RF cooling problems
April 9, 2010 - April 12, 2010
The Integrated Luminosity for the period from 4/5/10 to 4/12/10 was 69.51 inverse picobarns. NuMI reported receiving 8.03E18 protons on target during this same period.
- Five stores provided ~67.25 hours of luminosity
- I- vacuum valve closes
- Linac quadrupole power supply tripped off
April 7, 2010 - April 9, 2010
- Three stores provided ~45.25 hours of luminosity
- Controls problems cause loss of stack
- Large helium compressor trips off at CHL
April 5, 2010 - April 7, 2010
- Three stores provided ~42.5 hours of luminosity
- TeV proton studies
- ARF1 problems
- MI LCW leak fixed
- Recycler beam valve air leak fixed
- MiniBooNE off due to IRM crate trigger problems
April 2, 2010 - April 5, 2010
The Integrated Luminosity for the period from 3/29/10 to 4/5/10 was 71.71 inverse picobarns. NuMI reported receiving 8.68E18 protons on target during this same period.
- Five stores provided ~65.25 hours of luminosity
- MIRF problems resolved
- Meson MTest experiment T1004 begins taking beam
- P1 transfer line vacuum pumps trip off
March 31, 2010 - April 2, 2010
- Three stores provided ~40.75 hours of luminosity
- MI extraction power supply repaired
- I- Source trip; it reset
March 29, 2010 - March 31, 2010
- Four stores provided ~43.25 hours of luminosity
- Linac LCW pump at CUB failed - backup brought online
- Preaccelerator personnel will remove H- Source for cleaning
March 26, 2010 - March 29, 2010
The Integrated Luminosity for the period from 3/22/10 to 3/29/10 was 61.3 pb-1. NuMI reported receiving 7.82E18 protons on target during this same period.
- Four stores provided ~67.25 hours of luminosity
- Booster kicker cable reterminated
- P1 transfer line vacuum burst
- MIRF12 bypassed
- MiniBooNE reported Dewatering problems
- NuMI reported Humidifier problems
March 24, 2010 - March 26, 2010
- Four stores provided 31.75 hours of luminosity
- Store 7705 had a luminosity of 376.4E30 - Second highest
- I- Source output problems resolved
- Store 7706 terminated due to vacuum and cryo problems
- Booster kicker problems repaired
March 22, 2010 - March 24, 2010
- Four stores provided ~35.75 hours of luminosity
- DRF1 repaired
- NuMI Horn and MI-10 LCW pressure problems
- Store 7698 quenched due to quench indication
- Store 7704 set 2nd highest luminosity with 368.74E30
- Experiments T992 and T979 begin taking MTest beam
March 19, 2010 - March 22, 2010
The Integrated Luminosity for the period from 3/15/10 to 3/22/10 was 57.89 pb-1. NuMI reported receiving 6.74E18 protons on target during this same period.
- Five stores provided ~46.5 hours of luminosity
- Linac repairs LRF1
- Feeder 46A faulted
- MI RF problems
- TeV quench during shot setup
- Store 7690 quenched due to ComEd power glitch off-site
- Store 7695 Third highest with a luminosity of 350.7E30
March 17, 2010 - March 19, 2010
- Three stores provided ~36 hours and 45 minutes of luminosity
- Minos service building looses power
- A new average initial luminosity record for the Tevatron
- Problems with Linac RF Station #1
March 15, 2010 - March 17, 2010
- Three stores provided 43.25 hours of luminosity
- High voltage personnel repaired the cause of the Kautz Rd. Substation trip
- H- Source output dropped – I- Source brought online
- Booster accessed for RF and 400 MeV water skid maintenance
- NuMI accessed for fan work
- MI accessed to repair LCW leak
- MTest interlock problems
March 12, 2010 - March 15, 2010
The Integrated Luminosityfor the period from 3/8/10 to 3/15/10 was 60.41 pb-1. NuMI reported receiving 7.23E18 protons on target during this same period.
- Four stores provided 49.75 hours of luminosity
- TeV antiproton tune studies
- Booster CAMAC crate 10 problems
- Kautz Road Substation breaker trip - Store 7670 aborted
- TeV sequencer and CAMAC crate power supply problems
March 10, 2010 - March 12, 2010
- Three stores provide over 36 hours of integrated luminosity
- CUB chiller #2 back online
- Store 7667 in top 5 for highest initial luminosity at 351E30
- Rain tests sump pumps, temporary pump installed
March 8, 2010 - March 10, 2010
- Four stores provided ~37.75 hours of luminosity
- CDF fixes detector problem
- Store 7661 sets Record with a Luminosity of 354.4E30
- FESS configured MI LCW pumps for summer mode
- MIRF2 repaired
- Meson MTest T995 resumes taking beam
- Four-hour access on 3/11/10 to bring CUB chiller online
March 5, 2010 - March 8, 2010
The Integrated Luminosity for the period from 3/1/10 to 3/8/10 was 61.86 inverse picobarns. NuMI reported receiving 8.33E18 protons on target during this same period.
- Four stores provided ~51.25 hours of luminosity
- BRF4 high voltage cable repaired
- TeV sector A2 wet engine repaired
- Store 7655 had fourth highest luminosity with 347E30
- Network switch at C4 replaced
March 3, 2010 - March 5, 2010
- Three store provided ~39.5 hours of luminosity
- LRF3 Thyratron tube replaced
- Linac Klystron water skid LCW leak repaired
- Column number one at CUB tripped off
- Store #7650 fifth highest with a luminosity of 344.4E30
March 1, 2010 - March 3, 2010
- Three stores provided ~37 hours of luminosity
- H- Source extractor repaired
- MTest line LCW leak fixed
- Accumulator extraction kicker high voltage cable repaired
- TeV conducted Proton-only study
- MTest T953 experiment will start up today
February 26, 2010 - March 1, 2010
The Integrated Luminosity for the period from 2/22/10 to 3/1/10 was 62.27 inverse picobarns. NuMI reported receiving 7.24E18 protons on target during this same period.
- Five stores provided ~60.5 hours of luminosity
- Linac repaired LRF5
- Booster RF repaired
- H- Source needed tuning
- 750 KeV Line needed tuning
February 24, 2010 - February 26, 2010
- Three stores provides ~39.5 hours of luminosity
- Linac continues to work on LRF5
- MI had to back out of using new LLRF code
- Booster losses BRF1 and 14
February 22, 2010 - February 24, 2010
- Four stores provided ~42.25 hours of luminosity
- MTA conducted studies
- Booster problems due to BRF8
- Linac personnel worked on LRF5
February 19, 2010 - February 22, 2010
- Five stores provided ~60.5 hours of luminosity
- Linac and MI had some RF problems
- An off-site power glitch caused store 7625 to abort - no quench
February 17, 2010 - February 19, 2010
- Three stores provided ~36 hours and 30 minutes of luminosity
- LINAC Debuncher water skid problems
- TeV, D0, and CDF access were needed
February 15, 2010 - February 17, 2010
- Three stores provided ~44/75 hours of luminosity
- H- Source's water Resistor flushed and its extractor replaced
- LRF4 power amplifier replaced
- Feynman Computer Center suffered power outage
February 12, 2010 - February 15, 2010
The integrated luminosity for the period from 2/8/10 to 2/15/10 was 39.98 inverse picobarns.
NuMI reported receiving 6.92E18 protons on target during this same time period.
- Four stores provided ~32.5 hours of luminosity
- Store 7603 quenched
- Linac personnel repaired several devices
- Store 7606 aborted
- Booster had TCLK problems
- MTA to take some beam today
February 10, 2010 - February 12, 2010
- Four stores provided ~22.5 hours of luminosity
- TeV safety system testing completed
- Store 7597 quenched
- Sore 7601 aborted
February 8, 2010 - February 10, 2010
- Three stores provided ~34 hours of luminosity
- TeV access to repair magnet lead
- MI vacuum problems required access to repair
- Feynman Computer Center suffered Power outage
- MI RF cavity replaced
- Store 7590 lost due to local earthquake
February 5, 2010 - February 8, 2010
The integrated luminosity for the period from 2/1/10 to 2/8/10 was 50.47 inverse picobarns.
NuMI reported receiving 7.99E18 protons on target during this same period.
- Five stores provided ~63.75 hours of luminosity
- MTest off due LCW pump problem
- Pelletron recovered from full discharge
- TeV accessed to repair dipole lead
February 3, 2010 - February 5, 2010
- Three stores provided ~29.5 hours of luminosity
- Timing fixed for Accumulator RF station
- Power to NuMI sump pumps trip off
- Store 7577 aborted - no quench
February 1, 2010 - February 3, 2010
- Two stores provided ~14.75 hours of luminosity
- B11 separator sparking fixed
- One TeV quench during shot setup
- Accumulator kicker fixed
- Store 7573 aborted due to TeV RF trip - no quench
January 29, 2010 - February 1, 2010
The integrated luminosity for the period from 1/25/10 to 2/1/10 was 15.03 inverse picobarns. NuMI reported receiving 4.2E18 protons on target during this same period.
- Two stores provided 6.25 hours of luminosity
- Klystron RF station LCW leak repaired
- Three quenches occurred during shot setups
- Store 3559 quenched due to a separator spark
January 27, 2010 - January 29, 2010
- The accelerator complex was shutdown for maintenance - there was no beam
- Technicians found a MI vacuum leak
- The H- Source recovered
- Linac resumed sending beam at 10:30 AM, 1/28/10, and the rest of the complex was getting beam by midnight
- The TeV suffered a sector D0 quench
- A Linac Klystron LCW leak halted beam
January 25, 2010 - January 27, 2010
- Three stores provided ~44 hours of luminosity
- H- Source removed for cleaning
- Accelerator complex conducting maintenance
January 22, 2010 - January 25, 2010
- Three stores provided ~48.25 hours of luminosity
- TeV sector F4 quench due to abort kicker problem
- H- Source output dropping - 3 to 4 day shutdown planned to repair or replace
January 20, 2010 - January 22, 2010
- Three stores provided ~35.75 hours of luminosity
- H- Source water resister flushed
- Pbar LCW leak found on quadrupole magnet
- Store 7523 aborted, no quench
January 18, 2010 - January 20, 2010
- Three store provided ~34.75 hours of luminosity
- MI vacuum bursts
- Linac replaced quadrupole power supply
January 15, 2010 - January 18, 2010
The integrated luminosity for the period from 1/11/10 to 1/18/10 was 48.75 inverse picobarns.
NuMI reported receiving 6.86E18 protons on target during this same period.
- Five stores provided ~62 hours of luminosity
- Linac RF station (LRF2) repaired
- MTest (T977 MINERvA) resumed taking beam
- MI injection kicker power supply repaired
January 13, 2010 - January 15, 2010
- Three stores provided ~29 hours and 45 minutes of luminosity
- LRF2 problem repaired
- Pbar LCW leak
- TeV vacuum problems
January 11, 2010 - January 13, 2010
- Three stores provided ~34 hours of luminosity
- Backup I- Source work continues
- LRF2 problems persist
- Booster Chopper cable repaired
- TeV tilt meters record Haiti earthquake
January 8, 2010 - January 11, 2010
- Four stores provided ~41.25 hours of luminosity
- Accumulator kicker problem fixed
- TRF4 repaired
- H- Source output dropped
- CDF access today (1/11/10) around 3 PM
- NuMI reported two new single day records for protons on target
January 6, 2010 - January 8, 2010
- Three stores provided ~41.75 hours of luminosity
- TRF6 problems resolved
- NuMI record: 13.42E17 protons on target for one day
January 4, 2010 - January 6, 2010
- Five stores provided ~32 hours of luminosity
- Pbar cooling problem fixed
- TeV quench during shot setup due to front end
December 21, 2009 - January 4, 2010
The integrated luminosity for the period from 12/21/09 to 1/4/10 was 122.1 inverse picobarns.
NuMI reported receiving 17.37E18 protons on target during this same period.
- 18 stores provided ~256.25 hours of luminosity
- Pelletron autotune problem fixed
- Pbar cooling system PLC repaired
- Pbar lithium lens trips
- Store 7463 quenched
- Store 7468 established with AIL of 306.7E30
- Store 7470 quenched
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