LEDA and APT beam position measurement system: Design and initial tests

Conference · Thu Dec 31 04:00:00 EST 1998

OSTI ID:350991

Gilpatrick, J D; Power, J F; Shurter, R B; Stettler, M ^[1]; O`Hara, J F ^[2]; Martinez, D ^[3]

---

1. Los Alamos National Lab., NM (United States)
2. AlliedSignal Inc., Albuquerque, NM (United States)
3. General Atomics, San Diego, CA (United States)

Beam position measurements are being designed and fabricated for the Low Energy Demonstration Accelerator (LEDA), a 20-MeV, 100-mA-cw proton-accelerator, presently under construction at Los Alamos. Similar position measurements will provide position information for a steering scheme within the Accelerator Production of Tritium (APT) linac magnetic lattice. The steering scheme, which centers the beam in the magnetic lattice, uses two position measurements and two translatable quadrupole magnets every 5.5-FODO-lattice periods. What makes these beam position measurements unique is how they will attain, maintain and verify the required accuracy. The position measurement systems consist of micro-stripline beam position monitors (BPMs) and RF coaxial cables, log-ratio processors, on-line error correction sub-systems, and a control system interface including associated algorithms and computer software. This paper discusses the mapping of the BPM probe response, the algorithm used to calculate low beam-velocity response, and the expected log-ratio processor performance.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 350991
• Report Number(s): LA-UR--98-3668; CONF-980827--; ON: DE99002776
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ALGORITHMS
BEAM MONITORS
BEAM POSITION
DEMONSTRATION PROGRAMS
DESIGN
ISOTOPE PRODUCTION
LINEAR ACCELERATORS
PERFORMANCE TESTING
TRITIUM