Measurements of the Argonne Wakefield Accelerator's low charge, 4 MeV RF photocathode witness beam.

Conference · Wed Apr 01 04:00:00 EST 1998

OSTI ID:10715

Power, J

The Argonne Wakefield Accelerator's (AWA) witness RF photocathode gun produced its first electron beam in April of 1996. We have characterized the charge, energy, emittance and bunch length of the witness beam over the last several months. The emittance Was measured by both a quad scan that fitted for space charge using an in house developed Mathematica routine and a pepper pot technique. The bunch length was measured by imaging Cherenkov light from a quartz plate to a Hamamatsu streak camera with 2 psec resolution. A beam energy of 3.9 Mev was measured with a 6 inch round pole spectrometer while a beam charge was measured with both an ICT and a Faraday Cup. Although the gun will normally be run at 100 pC it has produced charges from 10 pC to 4 nc. All results of the measurements to date are presented here.

• Research Organization: Argonne National Lab., IL (US)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 10715
• Report Number(s): ANL-HEP-CP-98-26
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM BUNCHING
BEAM CURRENTS
BEAM EMITTANCE
BEAM PROFILES
ELECTRON BEAMS
PHOTOCATHODES
RF SYSTEMS
SPACE CHARGE
WAKEFIELD ACCELERATORS