d-Au Status & Chronology

29 January 2008

Kip Gardner

Yellowcollimatorlimit switch

APEX APEX

b4-q89trip

Vernierscans

Ring toring synchro

Yellow dipolefeedbacksetup

IRwaistknobs

IRWaistknobs

InjectionDrift comp

TestCollonramp

Revertto wed

FECwentdown

Chronology• Mon 22 Oct: d at full energy in Booster.• Tue 30 Oct d to W dump.• Thur 1 Nov: Blue cool-down begins.• Sat 3 Nov: Au79+ to W dump. Mode

switching established.• Mon 5 Nov: Blue cool-down complete.• Tue 6 Nov: Yellow cool-down complete.• Fri 9 Nov: d captured in blue.

Chronology (cont’d)• Sun 11 Nov: Au injected into yellow with

good lifetime.• Mon 12 Nov: Blue ramp efficiency 54%.• Wed 14 Nov: Blue ramp efficiency 81%;

yellow 55%.• Fri 16 Nov: First collisions; 800 Hz.• Sun 18 Nov: 37x37, 90%, 18 kHz.• Mon 26 Nov: Physics declared at 4 pm.• Fri 30 Nov: Stochastic cooling operational.

Chronology (cont’d)

• Wed 19 Dec: 0.8 m beta-star in yellow.• Wed 26 Dec: 0.7 m beta-star in blue and

yellow.• Wed 2 Jan: Phenix magnets reversed.• Tue 8 Jan: 160 kHz.• Wed 23 Jan: 175 kHz.• Sat 26 Jan: 200 kHz.• Sun 27 Jan: d-Au run ends at 8 pm.