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Showing 1 to 7 of 7 for “"bunch length"”.
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CEBAF Upgrade Bunch Length Measurements
<p>Many accelerators use short electron bunches and measuring the bunch length is important for efficient operations. CEBAF needs a suitable bunch length because bunches that are too long will result in beam interruption to the halls due to excessive energy spread and beam loss. In this work, bunch …
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Smith Purcell radiation from femtosecond electron bunches
… beam consists of a train of 15 MeV, 9 pC bunches of bunch lengths varying from 600 fs to 1 ps. The radiated energy for one electron travelling above a periodic grating is solved. The effects of multiple electrons in a bunch and multiple bunches in a train are introduced. The Smith-Purcell …
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Timing Diagnostics and Coherent Harmonics from a test-FEL
… coherent femtosecond pulses at 66 nm wavelength. A 375 MeV electron bunch was seeded by a femtosecond laser at 263 nm and coherent harmonics were extracted in an APPLE-II type elliptical undulator. A thermionic gun with a barium oxide cathode was adapted for photocathode operation, and the …
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Electron Beam Diagnostic at the ELBE Free Electron Laser
… period of 27 mm, is going to operate in the wavelength range from 3 µm through 30 µm. The second one is in the design stage only but it will be built to work at longer wavelengths from 25 µm to 150 µm where the FEL has no competition from conventional quantum lasers. While an infrared FEL makes …
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Electro-Optic Diagnostic Techniques For The CLIC Linear Collider
… provide accurate measurement of the longitudinal bunch profile at the tens of femtosecond level is based on electro-optic techniques. In this thesis, a bunch profile monitor, based on electro-optic spectral decoding (EOSD), is currently developed for the CLIC Test Facility 3 at CERN. The monitor …
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Problems in point charge electrodynamics
… as collimators and cavities. When a relativistic bunch of particles passes such a discontinuity the field generated by a leading charge can interact with the wall and consequently affect the motion of trailing charges. The fields acting on the trailing charges are known as (geometric) wakefields. …
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Electron beam sizes and lifetimes at MAX II and MAX III
… Landau cavity voltages a stable overstretched bunch shape with two regions of phase stability was observed. The lifetime limitations and acceptances in MAX III were determined and the location of a horizontal aperture restriction was identified. Removing the aperture restriction increased the …