Author: Lin, Y.-H.
Paper Title Page
MOPEA061 Operation Experience at Taiwan Light Source 220
 
  • Y.-C. Liu, H.H. Chen, H.C. Chen, S. Fann, S.J. Huang, J.A. Li, C.C. Liang, Y.K. Lin, Y.-H. Lin, M.-S. Yeh
    NSRRC, Hsinchu, Taiwan
 
  A matrix structure has been implemented for the purpose of successful operation of TLS and continuous progress of Taiwan Photon Source (TPS) construction. A dedicated and flexible manpower distribution has proven it could keep as same performance of TLS operation as possible. We will summarize the machine operation experience at TLS during TPS civil construction period.  
 
TUODB203 Dual Chip in Single Module Solid-State Power Amplifier Design for Compact Transmitter Architecture 1158
 
  • T.-C. Yu, L.-H. Chang, M.H. Chang, L.J. Chen, F.-T. Chung, M.-C. Lin, Y.-H. Lin, Z.L. Liu, C.H. Lo, M.H. Tsai, Ch. Wang, T.-T. Yang, M.-S. Yeh
    NSRRC, Hsinchu, Taiwan
 
  At present, the high power solid-state technique transmitter design are composed of hundreds parallel combined single chip for hundreds Watts power modules to achieve enough output power. Although the large numbers can bring high redundancy during system operation, the power hungry of next generation RF system of accelerator would need much more modules to reach its power requirement. Huge amount of power modules would bring the complexity and difficulty in power combining, system construction, management and maintenance. To overcome this problem, upgrading the power level of a single module could be the solution. Besides depending on the power level growing with technology advancement in semiconductor industry, a circuit level solution to combine dual chip in advance in a single PCB board is proposed to produce twice power as single chip. Such feasible solution can overcome the over-complexity of future several-hundreds kW solid-state transmitter design.  
slides icon Slides TUODB203 [2.337 MB]  
 
WEPFI060 Planar Balun Design with Advanced Heat Dissipation Structure for kW Level Solid-state Amplifier Module Development 2830
 
  • T.-C. Yu, L.-H. Chang, M.H. Chang, L.J. Chen, F.-T. Chung, M.-C. Lin, Y.-H. Lin, Z.L. Liu, C.H. Lo, M.H. Tsai, Ch. Wang, T.-T. Yang, M.-S. Yeh
    NSRRC, Hsinchu, Taiwan
 
  The power level of solid-state amplifier is continuously growing for advanced accelerator application as the RF power source. Huge amount of solid-state power amplifier (SSPA) modules can contribute several hundreds of kW RF power with high redundancy and reliability. However, with the increasing desire of RF power of single RF station, too much power modules would adversely cause larger area occupation and higher maintenance cost and complexity. Therefore, with the advancement of the RF power on single SSPA, the overall system design and configuration would become much simple and compact. However, the increasing RF of single SSPA would also bring the thermal problem at its chip as well as the output power combining balun. In this paper, kW range SSPA is developed with the novel planar balun structure with good thermal expansion property. With such new planar balun design, the SSPA can operate stably with above 1kW output RF power.  
 
WEPFI061 Petra Cavity Vacuum RF Condition with Field Balance Mechanism for TPS Storage Ring in NSRRC 2833
 
  • T.-C. Yu, L.-H. Chang, M.H. Chang, L.J. Chen, F.-T. Chung, M.-C. Lin, Y.-H. Lin, Z.L. Liu, C.H. Lo, M.H. Tsai, Ch. Wang, T.-T. Yang, M.-S. Yeh
    NSRRC, Hsinchu, Taiwan
 
  In the first stage commissioning of TPS (Taiwan Photon source) storage ring in NSRRC, two room temperature Petra cavities will be used. At this commission stage, 100mA with 950keV beam loss is estimated to have 47.5kW beam loss for each cavity. In the meanwhile, the cavity loss at the specified 1.2MV of each cavity will be about 50kW. Therefore, coupling coefficient of 2 is required. However, the initial design specification of Petra cavity has only beta of about 1.7. Hence, the modification of the input coupler is done with the enhancement of its beta as well as advanced water cooling for some heat point. Besides, due to the two-tuner system of Petra cavity, special field-balance tuner control system is also developed. In RF condition for better vacuum up to 1.4MV, some modification of the tuner mechanical structure is also done to reach high vacuum condition (lower than 5*10-9 Torr) for storage ring requirement.  
 
THPEA053 Data Acquisition and Monitoring for TPS SRF Module Horizontal Test 3264
 
  • Y.-H. Lin, L.-H. Chang, M.H. Chang, L.J. Chen, F.-T. Chung, M.-C. Lin, Z.L. Liu, C.H. Lo, M.H. Tsai, Ch. Wang, M.-S. Yeh, T.-C. Yu
    NSRRC, Hsinchu, Taiwan
  • M.H. Tsai
    NTUT, Taiwan
 
  Three KEKB-type single-cell SRF modules were shipped to NSRRC before the end of 2012. The horizontal test of the first KEKB-type SRF module has been already finished in January of 2013. While the horizontal tests for the next two SRF module will be completed in May and August of this year. This article introduces the data acquisition and monitoring systems during the SRF horizontal test in NSRRC.  
 
THPME035 The Electronic System Design and Realization for First Set 500 MHz KEKB SRF Module High Power Test 3588
 
  • F.-T. Chung, L.-H. Chang, M.H. Chang, L.J. Chen, M.-C. Lin, Y.-H. Lin, Z.L. Liu, C.H. Lo, M.H. Tsai, Ch. Wang, T.-T. Yang, M.-S. Yeh, T.-C. Yu
    NSRRC, Hsinchu, Taiwan
 
  This article reports the home-made electronics circuits for reading the various electronics signals which can be used for site acceptance of superconducting resonant cavity. The adjustment of parameters during 1st SRF high power acceptance can also be used for the update of the 2nd electronics. The modular electronics system will provide the advantages of fast repair, preparing spare parts easily, short install time and flexible adjustment. The hardware whole electronics system is mainly designed by CPLD, PLC and Display meters. The Military Standard connectors are used for signals connection. There are always junction boxes for signal transmission test and convenient signal jumping for ensuring the correct signal source. In safety action, there are Fast Interlock Sum (0-10us) and slow ready chain (50ms-150ms). The complete system realizes the real time monitor and protection of superconducting resonant cavity.