Monitoring relativistic heavy ion beams at the Bevalac

Conference · Sun Mar 01 00:00:00 EST 1987

OSTI ID:6506179

Crebbin, K C

Beam fluence in high intensity proton and electron accelerators is usually measured with Secondary Emission Monitors (SEM) calibrated by an activation method. These were no such activation measurements available for relativistic heavy ion beams. Secondary electron production and energy loss of a charged particle in passing through material are a result of Coulomb interaction between the projectile field and electrons in the material. Therefore range measurements and secondary emission yield should follow the same functional relationship of velocity and charge as given by the Bethe-Bloch equation. A substantial amount of data on range in water for various ions has been collected at the Bevalac Biomedical facility. Using the same calculations that convert measured proton ranges to ion ranges and comparing the calculated values to measured values, provides an indirect way to verify the validity of the SEM calibration. The results of these measurements are discussed in this paper.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6506179
• Report Number(s): LBL-22094; CONF-870302-161; ON: DE87009329
• Resource Relation: Conference: Particle accelerator conference, Washington, DC, USA, 16 Mar 1987; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BEVALAC
BEAM MONITORING
ION BEAMS
RANGE
CALIBRATION
SECONDARY EMISSION DETECTORS
STOPPING POWER
WATER
ACCELERATORS
BEAMS
CYCLIC ACCELERATORS
HYDROGEN COMPOUNDS
MEASURING INSTRUMENTS
MONITORING
OXYGEN COMPOUNDS
RADIATION DETECTORS
430200* - Particle Accelerators- Beam Dynamics
Field Calculations
& Ion Optics
654001 - Radiation & Shielding Physics- Radiation Physics
Shielding Calculations & Experiments