Beam Characterization in CEBAF-ER

Conference · Mon May 12 04:00:00 EDT 2003

OSTI ID:811127

Tennant, Christopher; Douglas, David; Tiefenback, Michael; Chao, Yu-Chiu; Freyberger, Arne

Energy recovering a 1 GeV beam through CEBAF (Continuous Electron Beam Accelerator Facility) presents many operational challenges. As a result, it is important to have a quantitative understanding of the beam behavior throughout the machine. The emittance provides a figure of merit in this context inasmuch as it characterizes the extent to which beam quality is preserved during energy recovery. A solution to the problem of obtaining a high-resolution emittance measurement in the extraction region of the CEBAF-ER experiment (CEBAF with Energy Recovery) is presented. The method makes use of a single scanning quadrupole and a downstream wire scanner. In addition, by using multiple wire scans, a scheme for measuring the emittance and momentum spread of the first pass beam in the injector and Arcs 1 and 2 was implemented. And by using a novel technique employing wire scans in conjunction with PMTs (Photomultiplier Tubes) to accurately measure the beam profile at the dump, we can quantify . ...

• 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: 811127
• Report Number(s): JLAB-ACP-03-92; DOE/ER/40150-2469
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
BEAM PROFILES
CEBAF ACCELERATOR
ELECTRON BEAMS
ENERGY RECOVERY
PERFORMANCE
QUADRUPOLES