Real-Time Transverse Emittance and Phase-Space Monitor

Journal Article · Thu Jan 01 04:00:00 EST 1998 · Nuclear Instruments and Methods in Physics Research Section A, Vol. 407 (1-3) (1998) pp. 343-349

OSTI ID:776932

Jordan, K; Song, J; Piot, P; Legg, R; Kehne, D; Li, R; Feldl, E; Denard, J -C; Krafft, G A; Neil, G R; Bohn, C L

A real-time multislit [1] transverse-emittance monitor has been developed for diagnosing the space-charge-dominated beam in the 10MeV injection line of the FEL at Thomas Jefferson National Accelerator Facility (formerly CEBAF). It gives emittance, Twiss parameters, and phase-space contours (without any symmetry assumptions) at the update rate of 1Hz. It reduces measurement noise in real-time, and incorporates a special algorithm for constructing the phase-space matrix, which yields more accurate results by sweeping the beam across the slits. In this paper we will discuss issues relevant to the software design and implementation. Experimental results obtained from a 250keV photocathode gun will also be presented and compared with other methods and with PARMELA simulations.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (US)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 776932
• Report Number(s): JLAB-ACC-97-42; DOE/ER/40150-1821
• Journal Information: Nuclear Instruments and Methods in Physics Research Section A, Vol. 407 (1-3) (1998) pp. 343-349, Journal Name: Nuclear Instruments and Methods in Physics Research Section A, Vol. 407 (1-3) (1998) pp. 343-349 Vol. 407
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ALGORITHMS
BEAM EMITTANCE
BEAM MONITORS
CEBAF ACCELERATOR
COMPUTER CODES
DESIGN
FREE ELECTRON LASERS
PHASE SPACE
PHOTOCATHODES
REAL TIME SYSTEMS