STATUS OF THE SPring-8 LINAC
نویسندگان
چکیده
The fluctuation of the beam current and energy had been investigated from ’98 to ’99. As a result, readjustment of klystron modulators and temperature stabilization were made so as for the RF system to obtain the phase and amplitude stability. Finally, the beam energy fluctuation of ±0.03% (1σ) was achieved and good reappearance of the injection current was obtained. A beam chicane and an accelerator column which compose an ECS were newly installed at the end of the linac in order to reduce the beam energy spread due to the beam loading. A photocathode RF gun study succeeded to extract photoelectrons by irradiation of UV laser pulses. The electric-field gradient on a cathode reached 140 MV/m and the minimum emittance of 17π mm⋅mrad was obtained. A high-power solid-state switch has been developed in order to replace a thyratron for a klystron modulator.
منابع مشابه
Software Project for SPring-8 Linac Control
The injector Linac control system for SPring-8 is under development and the first trial will be held soon for testing total performance. We designed this system using object oriented methodology to integrate the operator environment and the database architecture and for easy maintainability. A disadvantage of the object oriented approach is a long lead time for abstraction, modeling and definit...
متن کاملUpgrade of Linac Control System with New Vme Controllers at Spring-8
We integrated an injector linac control system to the SPring-8 standard system in September 2000. As a result of this integration, the SPring-8 accelerator complex was controlled by one unified system. Because the linac was continuously running as the electron beam injector not only for the SPring-8 storage ring but also for NewSUBARU, we had to minimize the hardware modification to reduce the ...
متن کاملDESIGN OF SPring-8 LINAC CONTROL SYSTEM USING OBJECT ORIENTED CONCEPT
At the present software technic, the methodology of Object Oriented Programming(OOP) has become the mainstream. Because it will be gave the ef®cient development of programming and the easy maintenance. OOP makes many parts of program that called Object, and these Objects are assembled into main program. When many Objects are reserved on the system development, so that the future development wil...
متن کاملThe Vacuum System for the Superconducting Linac of the TESLA Test Facility
Among the different approaches towards a next generation 500 GeV e+elinear collider the TESLA design uses superconducting accelerating structures operating at 1.3 GHz with a gradient of 25 MV/m. Presently the TESLA Test Facility, which includes a prototype linear accelerator with superconducting cavities, is build up at DESY/Hamburg to serve as an R&D tool. First electrons have been accelerated...
متن کاملCommissioning Status of the Kekb Linac
After entering into the full-commissioning phase of the KEKB linac in May, 1998, we have established two linac injection modes for the KEKB ring: an 8-GeV electron beam and a 3.5-GeV positron beam, as well as beam modes for the rings of the synchrotron light sources. All modes are easily switched for almost one minute without any trouble. The linac beam characteristics have been substantially i...
متن کاملGeV Linac Pre - damping Ring 8 GeV Pre - linac BC 1 BC 2 Main Linac Collimator ,
The JLC is a linear collider project pursued in Japan by researchers centered around KEK. The R&D status for the JLC project is presented, with emphasis on recent results from ATF concerning studies of production of ultra-low emittance beams and from manufacturing research on X-band accelerator structures.
متن کامل