Trapping of the PHERMEX beam in a mirror field

Conference · Thu Jan 01 00:00:00 EST 1987

OSTI ID:6873999

Hughes, T P; Builta, L A; Mack, J M; Moir, D C

An experiment is underway at Los Alamos National Laboratory to trap the 1-kA, 30-MeV PHERMEX beam in a magnetic mirror. The eventual aim is to accelerate the beam to 50 MeV by ramping up the magnetic field. Tangential injection of the beam through a soft iron nozzle is employed. Because the nozzle is placed within the magnetic mirror, energy must be extracted from the beam in one bounce time to prevent particles returning to the nozzle. A design to make the bounce time as long as possible is described, and two schemes to damp the axial motion are considered. Numerical simulations of the device show considerable axial spreading of the beam in one bounce time. Estimates are made of negative mass instability growth rates and the damping to be expected from the experimentally measured beam energy spread. Experimental results obtained to date are described.

• Research Organization: Mission Research Corp., Albuquerque, NM (USA); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6873999
• Report Number(s): LA-UR-87-809; CONF-870302-58; ON: DE87007500
• Resource Relation: Conference: Particle accelerator conference, Washington, DC, USA, 16 Mar 1987; Other Information: Paper copy only, copy does not permit microfiche production
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ELECTRON BEAMS
TRAPPING
MAGNETIC MIRRORS
DESIGN
CAPACITORS
INSTABILITY
MAGNETIC FIELDS
BEAMS
ELECTRICAL EQUIPMENT
EQUIPMENT
LEPTON BEAMS
OPEN PLASMA DEVICES
PARTICLE BEAMS
THERMONUCLEAR DEVICES
430200* - Particle Accelerators- Beam Dynamics
Field Calculations
& Ion Optics