Funneling: An intial beam-dynamics study

Conference · Fri Apr 25 04:00:00 EST 1986 · AIP Conf. Proc.; (United States)

OSTI ID:6380870

Guy, F W; Wangler, T P

Funneling two H/sup -/ beams into a single beam of twice the current has been examined as a means of doubling beam current without significantly increasing transverse emittance. Using the PARMILA particle-following code, two 100-mA RFQ output beams at 2 MeV were injected into idealized transport lines for merging two beams into one. Two approaches were studied: (1) the ''minimum-element'' method, in which a minimum number of discrete elements such as quadrupole triplets, buncher cavities, and bending magnets were used to transport and deflect the beam; and (2) the ''quasi-adiabatic'' method, in which a periodic lattice similar to the RFQ provided focusing and minimized abrupt changes in the beam environment. The minimum-element method resulted in an emittance growth ratio epsilon/sub 0//epsilon/sub i/ = 2.5, whereas the quasi-adiabatic emittance growth ratio was about 1.1 (albeit with an idealized line configuration).

• Research Organization: AT-1, MS H817, Los Alamos National Laboratory, Los Alamos, NM 87545
• OSTI ID: 6380870
• Report Number(s): CONF-8505164-
• Conference Information: Journal Name: AIP Conf. Proc.; (United States) Journal Volume: 139:1
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430302* -- Particle Accelerators-- Injection & Extraction Systems
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
ACCELERATORS
BEAM BUNCHING
BEAM DYNAMICS
BEAM INJECTION
BEAM TRANSPORT
BRIGHTNESS
COMPUTERIZED SIMULATION
LINEAR ACCELERATORS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
QUADRUPOLE LINACS
SIMULATION