RHIC experiments: Effect of bunch size and bunch spacing

Conference · Fri Jan 01 00:00:00 EST 1988

OSTI ID:7083589

Willis, W; Ludlam, T

In designing experiments for a colliding beams facility the size of the interaction diamond is an important practical matter. The place where the beam particles collide--the source from which detected secondary particles radiate--is not a point but a line of some length. The bunch length grows due to intrabeam scattering, with sigma/sub D/ approaching 1 meter after 10 hours of storage time. The proposed scenario allowed smaller diamond lengths to be achieved with non-zero crossing angle, with a corresponding decrease in luminosity. Since that time the RHIC detector workshops have provided a more specific and quantitative assessment of the need for small interaction diamond. Among the highest priority experiments in the RHIC program are those which measure lepton pairs, and here each of two complementary experiments finds the bunch length to be critical. These experiments are discussed briefly. 3 refs., 2 figs.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 7083589
• Report Number(s): BNL-41653; CONF-880335-20; ON: DE88016763
• Resource Relation: Conference: Workshop on the relativistic heavy ion collider performance, Upton, NY, USA, 21 Mar 1988; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BROOKHAVEN RHIC
BEAM BUNCHING
BEAM EMITTANCE
ELECTRON-POSITRON INTERACTIONS
MUON-MUON INTERACTIONS
PAIR PRODUCTION
PAIR SPECTROMETERS
RESEARCH PROGRAMS
ACCELERATORS
BEAM DYNAMICS
GAMMA SPECTROMETERS
HEAVY ION ACCELERATORS
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
MEASURING INSTRUMENTS
PARTICLE INTERACTIONS
SPECTROMETERS
STORAGE RINGS
430200* - Particle Accelerators- Beam Dynamics
Field Calculations
& Ion Optics