Resolution of Transverse Electron Beam Measurements using Optical Transition Radiation

Conference · Wed Jun 22 00:00:00 EDT 2005

OSTI ID:890305

Ischebeck, Rasmus; Decker, Franz-Josef; Hogan, Mark; Iverson, Richard H; Krejcik, Patrick; Lincoln, Melissa; Siemann, Robert H; Walz, Dieter; Clayton, Chris E; Huang, Chengkun; Lu, Wei; Deng, Suzhi; Oz, Erdem

In the plasma wakefield acceleration experiment E-167, optical transition radiation is used to measure the transverse profile of the electron bunches before and after the plasma acceleration. The distribution of the electric field from a single electron does not give a point-like distribution on the detector, but has a certain extension. Additionally, the resolution of the imaging system is affected by aberrations. The transverse profile of the bunch is thus convolved with a point spread function (PSF). Algorithms that deconvolve the image can help to improve the resolution. Imaged test patterns are used to determine the modulation transfer function of the lens. From this, the PSF can be reconstructed. The Lucy-Richardson algorithm is used to deconvolute this PSF from test images.

• Research Organization: Stanford Linear Accelerator Center (SLAC)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 890305
• Report Number(s): SLAC-PUB-11250
• Conference Information: Presented at 2005 Particle Accelerator Conference, Knoxville, Tennessee, 16-20 May 2005
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATION
ACCELERATORS
Accelerators
Instrumentation
ACCPHY
INST
OPTICS
ALGORITHMS
DISTRIBUTION
ELECTRIC FIELDS
ELECTRON BEAMS
ELECTRONS
MODULATION
PLASMA
PLASMA ACCELERATION
RESOLUTION
TRANSFER FUNCTIONS
TRANSITION RADIATION