Accelerator update, June 14, 2013

As Fermilab is getting closer to finishing substantial upgrades to its accelerator complex, Fermilab Today will post updates on some of the work going on in the accelerator tunnels. The Accelerator Division aims to send first beam through the Main Injector later this month, and the commissioning of the revamped Recycler storage ring is scheduled to begin in July.

Mechanical technicians installed the Recycler beam pipe at RR60. Photo: Denton Morris, AD

Kautz Road Substation
The duty electrician switched on the MI pulsed power at the Kautz Road Substation, but operators reported that there were harmonic filter faults that delayed some of the planned tests. High-voltage experts troubleshot the problems and discovered a capacitor bank arcing to ground due to bad fuses. FESS personnel completed the repairs, but the harmonic filters haven’t been tested yet.

Linac
Preaccelerator personnel installed a new dipole trim magnet.

Booster
Booster personnel conducted orbit-smoothing studies. They will need to access the Booster tunnel to install a new RF cavity this week.

Main Injector
Operators searched and secured the MI tunnels and the F-Sector transfer line. Operators used low-pots to clear all the ground faults on the MI bus and configured the power supply knife switches so that high-pot switches and power supplies were in the circuit. Operators conducted an MI high-pot. Operators removed all LOTO locks from the MI 13.8 kV box. Safety personnel recored all the MI tunnel door and gate locks. The Accelerator Fluids Group personnel reported that they had opened all of the Main Injector LCW valves. Personnel from the Technical Division repaired LCW leaks on MI Lambertsons. Mechanical technicians completed the MI-60 bias power supply shielding. (see photo; Photo: Denton Morris, AD)

Recycler
Mechanical technicians installed the Recycler beam pipe at RR60.

NuMI
NuMI personnel finished training Water Group personnel on operating the MI65 exchange skids. NuMI personnel completed the horn pulse testing, power supply and magnet testing, and the thermal scans of the stripline. Operations closed in VCBs and established a 40-GeV ramp on the MI bus and proved that MECAR worked. More MECAR work is needed.

Fixed-target area
Operators and switchyard personnel completed the Meson and F-Sector Separator conditioning. Working on the G2 NM1 berm pipe installation, mechanical technicians came up with a cost-saving method that eliminated the need to rent expensive magnet spacers.

View the AD Operations Department schedule.