Booster Corrector Upgrade

October 11 2010William Pellico

History• Olden days - Booster Correctors – DC supplies that had limited correction strength• Quadrupoles limited to < 1 amp RMS current• Dipoles limited to < 6 amps RMS current

– Alignment – • Done by Booster Personnel with no alignment fixtures

– Very Limited Orbit Control – mostly low energy– Very Little harmonic control – mostly low energy

• Upgraded in late 80’s with ramped power– Allowed for higher current – due to ramp down at

end of cycle. Still limited by RMS and slew rates!

Old Corrector (Saddle Style Package)

New Corrector

Short Straight Corrector Package

Multi-Element Corrector DesignOrange – horizontal dipole

Bright green – vertical dipole

Open green – normal quadrupole

Red – skew quadrupole

Magenta – normal sextupole

Blue – skew sextupole

Taken From: Booster Corrector Review 10 Oct 2006 Harding - Magnet Design and Fabrication

Booster Corrector Magnets

• New Booster Corrector Magnet Package Before Potting

Old - NewOLD

• Horizontal trim– 4 amps

• Vertical trim– 5.6 amps

• Quadrupole– 1 amp

• Skew Quadrupole– .3 amps

• Short straights: Horizontal ramped, Vertical DC

• Long straights: Vertical ramped, Horizontal DC

• Sextupoles are in separate packages– 12 Horizontal– 9 Vertical

New• Normal Sextupole

– 1.41 T/m– 2350 T/m/s

• Skew Sextupole– 1.41 T/m– 2350 T/m/s

• Horizontal Dipole

– Be able to produce 1 cm of beam motion at highest beam energy (8GeV).

– Be able to slew position 1 mm/ms up to the middle of the cycle

– 0.009 T-m– 3.24 T-m/s

• Vertical Dipole– 0.015 T-m– 3.24 T-m/s

• Normal Quadrupole– 0.16 T– 88 T/s

• Skew Quadrupole– 0.008 T– 0.8 T/s

Beam Loss vs. 1E12 Beam Intensity for Past 5 Years

Record Intensity RunningLimited by Shielding Assessment

Corrector InstallationCompleted

Recent Running

It was 10 years ago today….

Project Worker Bees – Over 120 People• EE Support

– George Krafczyk– Kenneth Sievert– John Brown

• Controls– Dan McArthur– Joseph Gomilar– Mike Kucera– Bill Marsh

• Alignment Group – Key Group with lots of input– O’Sheg Oshinowo

• TD– David Harding– George Velev– Sasha Makarov– Joseph DiMarco– TJ Gardner– Vladimir Kashikhin– Dan Smith

• Safety– Joel Fulgham

• Instrumentation– Jim Crisp– James Fitzgerald

• Operations– Duane Newhart

• Proton Source– Craig Drennan– Eric Prebys– Todd Sullivan– Jim Lackey– W Pellico– Doris Dick

• AD Mechanical – Key Group (too many to list)– Dave Augustine– Ben Ogert– Joel Misek– Maurice Ball– Justin Briney– Robert Slazyk– Scott Oplt– John Buck– Jason Kuinski

• Management– Bruce Baller– Roger Dixon– Steve Holmes– Kenneth Domann