Short Neutral Beam- B5

Brookhaven National Laboratory
(Revised 5/15/02, Contact: Phil Pile, 1-631-344-4643)

Parameters

• Maximum Momentum: ~2-20 GeV/c
• Length: 21 meters (includes 10 meter decay tank)
• Angular acceptance: 65 microsr (1:4 horizontal-vertical)
• Collimator:
• 9.5 meter collimation channel
• Sweeping Dipoles (7 meters center-center):
• B5P4 4.85 T-m
• B5P5 2.56 T-m
• Target: - June 96 & March 97- Gif image
• 11.6 cm long platinum
• Water cooled beryllium base
• Maximum > 20 Tp per spill
• Retired FY94-96 Target - Gif image
• Production Angle:
• 1-4.5 degrees, variable
• Particle Flux (per 10 Tp on target and 3.75 degree production angle):
• 1.7-20 GeV/c neutral kaons, 130,000,000 with 8,000,000,000 neutrons
• Approximately 10% of the neutral kaons decay inside the 10 meter decay tank

Past Use

• E871, Rare Neutral Kaon Decay ; K --> mu,e

Present Use

• E935, Gluino Search

Support

• Liaison Physicist: W. Meng
• Liaison Engineer: Joe Scaduto