| Paper | Title | Page |
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| THIBKI01 | RF Sources for the ILC | 2684 |
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As currently envisioned, approximately 750 10 MW multiple beam klystrons (MBK) will be used to power the ILC accelerator. The critical role of the MBK to the successful operation of the machine makes it a key ILC component. The large quantity required coupled with its technical sophistication also makes it one of the more expensive individual components. CPI has manufactured a prototype MBK that was delivered to DESY in March 2005 for use on the Tesla Test Facility / European X-FEL projects*. This klystron uses six low perveance, off-axis electron beams to produce the high powers required by both the ILC and X-FEL with high efficiency and the low cathode current density loading needed for extended operational life. The large scale production and costs for this klystron were examined as part of the US ILC industrialization cost study. Design for Assembly / Design for Manufacture techniques have been considered to make the klystron more easily manufacturable and less expensive. Many of these ideas are being used in the current design effort to produce a second MBK for DESY that will be horizontally oriented and appropriate for use in the actual X-FEL tunnel.
* A. Balkcum, et al. "Operation of a 1.3 GHz Multiple Beam Klystron," Proc. of 6th IVEC, pp. 505, Noordwijk (2005). |
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| THIBKI02 | Power Couplers for the ILC | 2685 |
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| Power couplers are critically important components in all superconducting accelerators. Power couplers provide the vacuum and thermal interface between the superconducting cavity and the room temperature waveguide components and transmit microwaves generated by the high power klystron or IOT. Power couplers must be extraordinarily clean and reliable. CPI power couplers are manufactured to our customer?s specifications using processes which are standard to the electron device industry as well as processes which have been developed specifically for power couplers. We have developed the capability of electroplating high-RRR copper. Our high-RRR copper plating has been qualified by Cornell and DESY. We have developed the capability of applying TiN coatings to ceramic windows for multipactor suppression. Using these processes, CPI has manufactured over 50 power couplers of various designs with an additional 50 power couplers to be built this year. Our talk will focus on power couplers for the ILC. In particular, we will discuss some of the challenges to be faced during the manufacture of tens of thousands of power couplers for the ILC. | ||
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| THIBKI03 | Klystron Development by TETD | 2688 |
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| TETD (Toshiba Electron Tubes & Devices Co., LTD.) has been developing vacuum microwave devices such as klystrons, gyrotrons and input couplers in collaboration with some Japanese research institutes. This article describes recent development status of klystrons and input couplers for high-power RF accelerator systems including a 324-MHz and a 972-MHz klystrons for JARC, 1.3-GHz vertical and horizontal MBKs for DESY and a 1.3-GHz TTF-type input coupler for European XFEL. As an application to fusion experimental devices, development of a 5-GHz, 500-kW CW klystron for KSTAR and a 170-GHz quasi-CW gyrotron for ITER are also presented. | ||
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| THIBKI04 | Developments of Long-pulse Klystron Modulator for KEK Super-conducting RF Test Facility | 2691 |
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| NICHICON (KUSATSU) CORPORATION and KEK have developed a novel long-pulse klystron modulator for both of single-beam tube(136kVp*100A) and multi-beam tube(120kVp*140A). The main features are; - crowberless system with optimized IGBT snubber circuit, - compact and highly reliable Self-Healing capacitors, - HV & LV twin pulse transformers of laminated steel core for reduced tank volume. Detailed configuration and test results to be presented. | ||
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| THIBKI05 | European Industry's Potential Capabilities for High Power RF Systems for the Future IlC | 2693 |
| Abstract to be supplied by speaker. | ||
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