نتایج جستجو برای: klystron
تعداد نتایج: 371 فیلتر نتایج به سال:
MICROWAVE signal sources of high fre quency-stability and spectral purity are increasingly important to many fields. These include doppler systems, nuclear spectroscopy measurements, spectrum analyzers, as well as telemetry, radio astronomy, and other com munications-type work. All of these applica tions are characterized by the need for good shortand long-term stability as well as low residual...
Fast rf phase shifters may be needed, in powering a superconducting linac, between rf generators and accelerating cavities when one klystron feeds more than one cavity. The configuration with one klystron for many cavities needs orthogonal controls of magnitude and phase of rf power in order to preserve system performance while reducing construction cost. For this reason, a waveguide ferrite ph...
The next generation of linear colliders requires peak power sourcesof-over 200 MW per meter at frequencies above 10 GHz at pulse widths of less than 100 nsec. Several power sources are under active development, including a conventional klystron with RF pulse compression, a relativistic klystron (RK) and a crossed-field amplifier. Power from one of these has energized a 0.5 meter two-section Hig...
We report the results of ongoing high power tests of single-cell standing wave structures. These tests are part of an experimental and theoretical study of rf breakdown in normal conducting structures at 11.4 GHz. The goal of this study is to determine the maximum gradient possibilities for normal-conducting rf powered particle beam accelerators. The test setup consists of reusable mode launche...
RF breakdown studies are presently being carried out at SLAC with klystron cavities in a traveling wave resonator (TWR). Different kinds of fabrication methods and several kinds of semiconducting and insulating coatings have been applied to X-Band TM010 cavities. RF breakdown thresholds up to 250 MV/m have been obtained. Dark current levels were found to be depressed in TiN-coated and single-po...
The particle optics code GPT [1] has been applied to study the single pass electron beam interaction with an external laser field in the undulator system of a free electron laser. In particular, this code has been used to simulate the laser electron beam interaction in an optical klystron. Micro-bunching as a result of the interaction of the electron bunch with an electromagnetic pulse is prese...
In the 2.5-GeV Photon Factory (PF) storage ring at KEK, one of the klystron power supplies was upgraded during a summer shutdown in 2003. The new power supply can provide a DC high voltage of up to 45 kV with the maximum current of 9 A. To protect the klystron under sparks, a noble solid-state switch was incorporated. This paper describes the design and the performance of the new power supply. ...
Abstract The proposed Next Linear Collider contains a large number of linac RF systems with new requirements for wideband klystron modulation and accurate RF vector detection. The system will be capable of automatically phasing each klystron and compensating for beam loading effects. Accelerator structure alignment is determined by detection of the beam induced dipole modes with a receiver simi...
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