Accelerator update, Sept. 10

Fermilab began sending the first neutrinos to the NOvA detector in Minnesota on Wednesday, Sept. 4. By the end of Sunday, the accelerators had delivered an integrated luminosity of 1.46 x 1018 protons on target. The red line indicates a steady increase in delivered protons.

Linac and Booster
AD personnel operated the Linac and Booster accelerators, tuned the machines and conducted machine studies. A newly refurbished RF cavity will be installed in the Booster this week, and another one will be removed for refurbishment at the same time.

Main Injector/NuMI
The Fermilab accelerator complex sent the first post-shutdown neutrino beam to Minnesota on Sept. 4. Within a few days, the Main Injector already achieved the beam power of 80 kilowatts, almost a quarter of the pre-shutdown beam power. By Sept. 9, the Main Injector had delivered an integrated intensity of 1.46 x 1018 protons to the carbon target in the NuMI beamline during approximately 96 hours of beam delivery. MI vacuum pump trips limited intensity and beam operation helped scrub the vacuum, improving it, so that beam power was up to roughly 170 kilowatts by Monday. Accelerator experts worked on lattice measurements, studies and machine tuning to increase the beam intensity in the Main Injector.

Fixed-target area
Operators and experts had trouble sending beam from the Main Injector to the Switchyard absorber. Machine experts are examining the beam extraction in the Main Injector and the settings for the beamline from the Main Injector to the Switchyard. The Test Beam Facility is ready to receive beam when it becomes available. The installation of the pipe for the Neutrino Muon beamline, which delivers beam to the SeaQuest experiment, is complete. Checks by alignment, installation of removed components, vacuum flanges and other work remains.

View the AD Operations Department schedule.