Author: Li, Y.D.
Paper Title Page
TUPAB351 The Progress of 300 kW Home-Made Fully Solid-State Transmitter for TPS 2328
 
  • T.-C. Yu, F.Y. Chang, M.H. Chang, S.W. Chang, L.J. Chen, F.-T. Chung, Y.D. Li, M.-C. Lin, Z.K. Liu, C.H. Lo, Ch. Wang, M.-S. Yeh
    NSRRC, Hsinchu, Taiwan
  
  To sup­port the sta­ble op­er­a­tion of Tai­wan Pho­ton Source (TPS) with 500mA beam cur­rent and the in-creas­ing beam line con­struc­tion, a 3rd RF plant is thus con­structed for such de­mand. The RF power source of the other 2 RF plants adopts kly­stron type trans­mit­ter and the 3rd RF plants is trans­ferred to new tech­nol­ogy of solid-state for bet­ter re­dun­dancy and eas­ier mainte-nance. Base on the suc­cess of solid-state power am­pli-fier de­vel­op­ment in 2020, a 3rd RF power source is thus de­cided to be made in house by solid-state tech-nol­ogy. The 500MHz 300kW solid-state trans­mit­ter is con­structed by 4 80 kW solid-state power am­pli­fier (SSPA) tow­ers and power com­bined by 3 WR1800 3-dB hy­brid cou­plers. Each tower is con­sisted of 110 850W final stage SSPA mod­ules with 4 100W pre-am­pli­fiers and 6 600W drive am­pli­fiers. The pre and drive am­pli­fiers are power com­bined for higher re­dun-dancy. The DC power are eco­nom­i­cal in­dus­trial 48V AC-DC rack mount power sup­plies which are par­al­lel con­nected for higher total DC power and best re­dun-dancy. The ar­chi­tec­ture and pre­sent progress are pre-sented in this ar­ti­cle.  
poster icon Poster TUPAB351 [2.348 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB351  
About • paper received ※ 20 May 2021       paper accepted ※ 11 June 2021       issue date ※ 20 August 2021  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)  
 
WEPAB296 A Klystron Phase Lock Loop for RF System at TPS Booster Ring 3354
 
  • F.Y. Chang, M.H. Chang, S.W. Chang, L.J. Chen, F.-T. Chung, Y.D. Li, M.-C. Lin, Z.K. Liu, C.H. Lo, Ch. Wang, M.-S. Yeh, T.-C. Yu
    NSRRC, Hsinchu, Taiwan
  
  In TPS booster ring, the DLLRF is used to con­trolled the ramp­ing gap volt­age and also the en­ergy sav­ing mod­ule is ap­plied to save power while the ring does not in­ject beam. But we oc­curred to have a prob­lem of PI sat­u­ra­tion due to a large phase change when the en­ergy sav­ing mod­ule work­ing. The en­ergy sav­ing mod­ule switches the anode volt­age of the kly­stron from high to low level to de­crease the cath­ode cur­rent while the ring does not in­ject and do the op­po­site while the ring in­jects. This ac­tion causes a large phase change of the trans­mit­ter and leads the PI con­troller to work in the wrong di­rec­tion. We add a kly­stron phase loop to solve this sit­u­a­tion.  
poster icon Poster WEPAB296 [0.792 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB296  
About • paper received ※ 19 May 2021       paper accepted ※ 01 July 2021       issue date ※ 30 August 2021  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)  
 
THXC07 Adaptive Control of Klystron Operation Parameters for Energy Saving at Storage Ring of TPS 3748
 
  • T.-C. Yu, F.Y. Chang, M.H. Chang, S.W. Chang, L.J. Chen, F.-T. Chung, Y.D. Li, M.-C. Lin, Z.K. Liu, C.H. Lo, Ch. Wang, M.-S. Yeh
    NSRRC, Hsinchu, Taiwan
  
  To sat­isfy max­i­mum beam cur­rent op­er­a­tion in the stor­age ring of TPS, the op­er­a­tion pa­ra­me­ters of both RF trans­mit­ters are set to be able to gen­er­ate its maxi-mum RF power in daily usage. Under such con­di­tion, the kly­strons can de­liver any power below 300kW at con­stant AC power con­sump­tion which is about 520-530 kW. Hence, the AC power usage is in­de­pen­dent of the re­quired RF out­put power. To best uti­lize the avail-able AC power based on the re­quired RF power, an adap­tive con­trol method­ol­ogy is pro­posed here to change the op­er­a­tion pa­ra­me­ters of the kly­stron, cath-ode volt­age and anode volt­age, ac­cord­ing to the pre-sent RF power. The cor­re­spond­ing op­er­a­tion parame-ters are ap­plied by the prior tested table which maps the op­er­a­tion pa­ra­me­ters with the dif­fer­ent sat­u­ra­tion RF power. The test re­sults show that the saved en­ergy can be 32% to 11% from 30mA to 450mA for both RF plants as com­par­ing to con­stant op­er­a­tion pa­ra­me­ters of 1047 kW AC power.  
slides icon Slides THXC07 [1.241 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THXC07  
About • paper received ※ 19 May 2021       paper accepted ※ 06 July 2021       issue date ※ 11 August 2021  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)