نتایج جستجو برای: optical klystron
تعداد نتایج: 266878 فیلتر نتایج به سال:
If the energy spread of a beam is larger then the Pierce parameter, the FEL gain length increases dramatically and the FEL output gets suppressed. We show that if the energy distribution of such a beam is made oscillatory on a small scale, the gain length can be considerably decreased. Such an oscillatory energy distribution is generated by first modulating the beam energy with a laser via the ...
A new arc detection and interlock generating module for the SLAC PEP-II low-level RF VXI-based system has been developed. The system is required to turn off the RF drive and high voltage power supply in the event of arcing in the cavity windows, klystron window, or circulator. Infrared photodiodes receive arc signals through radiation resistant optical fibers. Gain and bandwidth are selectable ...
2014 A storage ring free-electron laser oscillator has been operated above threshold at a visible wavelength 03BB ~ 6 500 Å. This laser was obtained with electrons of 166 MeV circulating in the storage ring ACO. The light emitted by the electrons passing through an optical klystron (a modified version of an undulator) is stored in a high-Q optical cavity. First some below laser threshold phenom...
چکیده ندارد.
We have used relativistic klystron technology to extract 290-MW of peak power ‘at 11.4 GHz from an induction linac beam, and to power a short 11.4-GHz highgradient accelerator. We have measured rf phase stability, field-emission, and the momentum spectrum of an accelerated electron beam. An average accelerating gradient of 84 MV/ h b m as een achieved with 80-MW of relativistic klystron power.
This year marks the 60 anniversary of the birth of the klystron at Stanford University. The tube was the first practical source of microwaves and its invention initiated a search for increasingly more powerful sources, which continues to this day. This paper reviews the scientific uses of the klystron and outlines its operating principles. The history of the device is traced, from its scientifi...
X-band klystrons capable of 50 MW and utilizing Periodic Permanent Magnet (PPM) focusing are undergoing design and fabrication at the Stanford Linear Accelerator Center (SLAC). The klystron development is part of an effort to realize components necessary for the construction of the Next Linear Collider (NLC). The first klystron to be tested this year has a 0.6 UK beam at 465 kV, a 5-cell travel...
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