| Paper |
Title |
Other Keywords |
Page |
| TU3002 |
Industrial Aspects of Linac Components
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linac, gun, vacuum, electron |
237 |
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- A. J. Favale
AES, Medford, NY
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The industrial aspects of producing linac components from the particle sources, the accelerator structures, the magnet systems and RF systems will be discussed. The various aspects of working with national labs and universities will be covered. Such issues as to what type of Contract Form should be used; Organizational Conflict of Interest and Intellectual Property will be covered as well as how best to work with the labs and universities on SBIRs, CRADAs and Work for Others contract. Specific examples will be addressed including the unique issues for the ILC.
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| THP013 |
Adaptive Control of a SC Cavity Based on the Physical Parameters Identification
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controls, klystron, feedback, resonance |
595 |
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- T. Czarski, W. J. Jalmuzna, W. Koprek, K. T. Pozniak, R. S. Romaniuk
Warsaw University of Technology, Institute of Electronic Systems, Warsaw
- S. Simrock
DESY, Hamburg
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The paper presents preliminary results of SRF cavity control by FPGA system called "SIMCON". Algebraic model of the control system including calibration and correction procedure of the signal path was discussed. In particular, there were debated the following aspects of the automatic control procedures: compensation of the input offset, calibration of the cavity channel and correction of the klystron channel (linearization). Functional structure of FPGA based SIMCON board for LLRF Cavity Control System was explained. Alghoritm of adaptive control for cavity driven with FPGA controller supported by MATLAB system was discussed. Experimental results for 8 cavities of ACC1 module controlled by the SIMCON board were shown. The resuls lead to novel method of parameters identification of cavity system in noisy and no stationary conditions.
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| THP067 |
Status of the Tuner for the 19-Cell Superconducting CH Prototype Cavity
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simulation, cryogenics, vacuum, linac |
737 |
| |
- C. Commenda, H. Liebermann, H. Podlech, U. Ratzinger, A. C. Sauer
IAP, Frankfurt-am-Main
- K. Dermati
GSI, Darmstadt
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The radio frequency tuning of the multi-cell superconducting CH structure for beta equal to 0.1 is investigated for a 19-cell niobium cavity operated at liquid helium temperature. By applying external mechanical forces the deformation of the structure is studied and the resulting change in frequency is analysed. The ruling equations of elasticity and the electromagnetic eigenvalue problem are solved by using commercial finite element tools. The quantitative results form the basis of an optimized tuning device. In order to guarantee a long lifetime of the cavity, fracture criteria are defined to avoid mechanical damage. Wherever possible the results are compared with experimental data obtained from measurements performed on the first CH prototype developed at the Institute of Applied Physics at Frankfurt. In addition a fast piezo device will be integrated into the slowly acting mechanical tuner. The whole system will operate in an existing horizontal cryostat for testing purposes.
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