RF system considerations for a large hadron collider

Conference · Sat Apr 01 04:00:00 EST 1989 · AIP Conf. Proc.; (United States)

OSTI ID:6087437

Raka, E

The radio-frequency (rf) system of a large hadron collider is require to operate in three different modes. It must capture and accumulate in stationary buckets (closed trajectories in longitudinal phase space) successive groups of bunches from its injector; accelerate these bunches in moving buckets up to the design energy; and finally store them, for several hours, while maintaining a minimum ratio of bunch-to-bucket area. In the storage mode it provides the nominal energy gain per turn required to make up for synchrotron radiation losses and for the power loss due to voltages induced in the impedances presented to the beam by the vacuum chamber and accelerating structures. In what follows then, we shall discuss how we arrive at a particular choice of voltage and frequency; the type of accelerating structure that would be suitable for obtaining the required voltage and resonant impedance; static beam loading including a simplified beam stability criterion involving the beam current and total rf system shunt impedance; the basic principle of rf phase and frequency control loops; and the effect of rf noise and its interaction with these loops. Finally, we shall consider the need for and design of rf systems to damp independently coherent oscillations of individual bunches or groups of bunches. (AIP)

• Research Organization: Brookhaven National Laboratory, Upton, NY 11973(US)
• OSTI ID: 6087437
• Report Number(s): CONF-8707208-
• Conference Information: Journal Name: AIP Conf. Proc.; (United States) Journal Volume: 184:1
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430100* -- Particle Accelerators-- Design
Development
& Operation
ACCELERATION
ACCELERATORS
BEAM BUNCHING
BEAM DYNAMICS
BREMSSTRAHLUNG
CAVITY RESONATORS
CERN SPS SYNCHROTRON
CYCLIC ACCELERATORS
DATA
DESIGN
DIAGRAMS
ELECTRODYNAMICS
ELECTROMAGNETIC RADIATION
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
ENERGY ANALYSIS
ENERGY LOSSES
ENGINEERING DRAWINGS
EQUIPMENT
HADRON-HADRON INTERACTIONS
INFORMATION
INTERACTIONS
LOSSES
MATHEMATICAL SPACE
NUMERICAL DATA
PARTICLE INTERACTIONS
PHASE SPACE
RADIATIONS
RESONATORS
RF SYSTEMS
SPACE
STORAGE RINGS
SUPERCONDUCTING SUPER COLLIDER
SYNCHROTRON RADIATION
SYNCHROTRONS
SYSTEMS ANALYSIS