RHIC Beam Commissioning: 1999

Cooldown status . . MCR broadcast
RHIC Retreat 1999: Sept 16 & 17

EARLY BEAM COMMISSIONING
Highlights of control room graphics, recorded between July 2 and August 13, 1999.

For more details in the form of a graphical history see the
BEAM PICTURE GALLERY

0600 Monday August 16 The first RHIC Beam Commissioning run finished this morning. Beam is next expected to be seen in RHIC in December 1999. A brief summary of progress so far in BLUE and YELLOW rings is as follows:

BLUE Beam has been efficiently injected, captured, and stored in the BLUE ring, with lifetimes as long as 45 minutes. Acceleration by a modest amount - about 1 GeV per nucleon - has been demonstrated at a slow ramp rate. The biggest challenge in commissioning the BLUE ring was the need to maneuver the closed orbit around a small number of apparent obstacles in the beam pipe. These obstacles will be investigated - and removed - when the ring is warmed up in September.

YELLOW Thousands of turns of beam were briefly seen in the YELLOW ring, allowing successful RF capture. Long lifetimes have not yet been established, nor has acceleration been performed. No apparent obstacles have been found in YELLOW, in a positive contrast to BLUE. On the other hand, steering and second turn closure in the injection region were found to be more difficult than in BLUE, as also was steering through the YELLOW dump area. The situation will be greatly ameliorated in the next beam commissioning run, when we will be able to use the nominal injection optics with a beta function value of beta* = 10.0 meters at all 6 interaction points. The optics used so far had beta* = 2.9 meters, much closer to the nominal luminosity optics with beta* = 2.0 than to the injection optics.

Phone & email Call in & control rooms PHENIX Coordinators Run Coordinators	Shift summaries Commissioning 5/99-7/99 ACTIVE problems Dry Run 3/99 Sextant Test 12/96-2/97	May-July 1999 MCR Shift Schedule AGS/Boo minutes AGS detail Huang
Phone directories BNL BNL 2 (BRAHMS home) PHENIX PHOBOS STAR	Software StartUp Applications Replication Status	Training Cards, records, classes Controlled area table Controlled area figure
Miscellany BNL BNL training Tune pool	CAD pages AGS AGS Experimental Support RHIC RHIC Accelerator RHIC Documentation	CAD groups Accelerator Physics Controls Instrumentation Operations

Steve Peggs (peggs@bnl.gov)

RHIC Beam Commissioning: 1999

Phone & email

Shift summaries

May-July 1999

Phone directories

Software

Training

Miscellany

CAD pages

CAD groups