Low Energy Separated Beam II - C6/C8
Brookhaven National Laboratory
(Revised 5-15-02, Contact: Phil Pile,
516-344-4643)
LESBII Drawing
Parameters
- Maximum Momentum: 750 MeV/c
- Length: 15 meters
- Angular acceptance: 10 msr
- Momentum acceptance: 5% fwhm
- Total Acceptance: 50 msr%
- Beam Optics: Corrected to second order
- Movable Collimators:
- One Vertical Collimator (Mass Slit)
- Electrostatic Separators: Two Short Separators
- 12.7 cm gap, <625 kV
- 10.2 cm gap, <560 kV
- Target: - Gif image 1/4 ; 2/4 ;
3/4; 4/4
- 9 cm long platinum
- water cooled copper base
- Maximum >2 x 1013 per spill
- ~ 25% of proton beam fully targeted on C-target reach C'-target
- Production Angle: 5 degrees
- Particle Flux (per 1013, 24 GeV/c protons on target)
- 700 MeV/c negative kaons - 3.3 x 104 with 15% purity
- 700 MeV/c positive kaons - 106 with 50% purity
- 700 MeV/c +/- pions - 2 x 109 (limited to <108 due to area
shielding limits)
Past Use
- E890, Charge Symmetry Breaking in
eta production
- E909, Eta production at threshold
- E905, A search for a S-Nucleus bound state using the 4He(K-,p+/-) reaction
Present Use
- E907,C8-Hypernuclei Spectroscopy using the
LANL Neutral Meson Spectrometer
- E931,C8-Study of the Delta I=1/2
Rule in Weak Decay of S-Shell Hypernuclei
- E913/914,C6-Baryon
Spectroscopy using the SLAC Crystal Ball
Support
