Introduction of CANON ELECTRON TUBES DEVICES Co Ltd

Introduction of CANON ELECTRON TUBES & DEVICES Co. , Ltd. • Company Overview • Klystrons HG 2019 12 June 2019 Toshiro ANNO （C） Canon Electron Tubes & Devices Co. , Ltd.

Company overview History Founded: 1915 Developed the First X-ray tube to be produced in Japan. Established: 2003 Renamed: Nov. 2018 Canon Electron Tubes & Devices Co. , Ltd. Headquarters 1385 Shimoishigami Otawara, Tochigi Japan Products Microwave Tubes Power Grid Tubes Radiation Detectors X-ray Tubes Image Intensifiers X-ray Flat Panel Detectors （C） Canon Electron Tubes & Devices Co. , Ltd. Headquarters ~150 km Mt. Fuji Tokyo office 2

Applications of klystrons SPring-8 / SACLA Scientific Research Facilities J-PARC Science Neutron source, FEL, Synchrotron radiation, High energy physics (Accelerator) Fusion (Heating) http: //www. spring 8. or. jp/ Radar System Airport Radar TDWR (Terminal Doppler Weather Radar) ARSR (Air Route Surveillance Radar) ASR (Airport Surveillance Radar) Industrial & Medical LINAC, Sterilization Non-destructive Inspection, Industrial Heating Radiation Therapy http: //www. jma. go. jp/jma/index. html （C） Canon Electron Tubes & Devices Co. , Ltd. https: //j-parc. jp/ Industrial & Medical Equipment Proton Therapy https: //www. avoplc. com/ 3

Principles of klystrons Collector Bunched Beam (RF current) Output window Output microwave Interaction section Input microwave Last cavity Intermediate cavities Electron bunching Drift tube First cavity Cathode Electron gun DC Beam (DC current) （C） Canon Electron Tubes & Devices Co. , Ltd. 4

CETD Klystrons in scientific research facilities MAX-IV Lab ESS CLS RAL JINR IHEP PLS RIKEN THU PAL XFEL AIST DICP KOMAC Tohoku Univ. KSTAR TUS Daresbury Lab. Osaka Univ. GSI SLAC FNAL BNL SIRIUS KEK DESY SSRF JAEA SOLEIL NSRL SPring-8 CSNS J-PARC PSI RRCAT Tokyo Univ. CERN SAGA-LS INFN Hokkaido Univ. ASP-LS SACLA AICHI-LS CETD klystrons are used in many facilities all over the world. （C） Canon Electron Tubes & Devices Co. , Ltd. 5

X-band pulse klystron for science Typical Operations 1 m 1. 9 m E 37113 E 37115 High Eff. tube is under development in collaboration with CERN. （C） Canon Electron Tubes & Devices Co. , Ltd. E 3768 Parameter E 37113 E 37115 E 3768 * Frequency 11994 MHz 11424 MHz Peak Power 6 MW 50 MW Pulse Length 5 μs 2 μs 0. 4 μs Repetition Rate 400 pps 50 pps 25 pps Beam Voltage 155 k. V 460 k. V Efficiency 40% 46% * E 3768 needs modification Accelerator Facilities and development because of some limits. CERN Xbox-3 4 sockets (E 37113) SINAP 1 socket (E 37115) KEK(XTF) 3 sockets (E 3768) Tokyo Univ. 1 socket (E 3768) ★ 3 -Cell Traveling-wave Output Cavity (E 37113/E 37115) ★ 4 -Cell Traveling-wave Output Cavity (E 3768) PPM focusing 6

C-band pulse klystron for science Typical Operations 202 1. 4 m E 37202 E 37212 Parameter E 37202 E 37212 Frequency 5712 MHz Peak Power 50 MW Pulse Duration 2. 5 s 3 s Repetition Rate 60 pps 100 pps Beam Voltage 358 k. V Beam Current 322 A Efficiency 43% Power Gain 52 d. B Average RF power 7. 5 k. W 15 k. W Accelerator Facilities SACLA 64 sockets (E 37202) Swiss FEL 28 sockets (E 37212) ★ 3 -Cell Traveling-wave Output Cavity （C） Canon Electron Tubes & Devices Co. , Ltd. 7

S-band pulse klystron for science (50 MW class) Typical Operations 1. 4 m E 3730 A E 37302 A E 37310 （C） Canon Electron Tubes & Devices Co. , Ltd. Parameter E 3730 A E 37302 A E 37310 Frequency 2856 MHz 2998 MHz Peak Power 50 MW 45 MW 37 MW Pulse Length 4 μs 3 μs 4. 5 μs Repetition Rate 50 pps 20 pps 100 pps Beam Voltage 312 k. V 315 k. V 295 k. V Efficiency 45% 40% Accelerator Facilities KEK 60 sockets RIKEN 1 socket Tohoku Uni. 1 socket IHEP(China) 16 sockets MXIS(USA) 2 sockets THU(China) 1 socket RRCAT(India) 1 socket SSRF(China) CNPEM(Brazil) BNL(USA) DESY(Germany) MAX-IV(Sweden) 20 sockets Jagiellonian Univ. (Poland) 8

S-band pulse klystron for science (80 MW class) Typical Operations 1. 9 m E 3712 E 37333 （C） Canon Electron Tubes & Devices Co. , Ltd. Parameter E 3712 E 37333 Frequency 2856 MHz 2998 MHz Peak Power 100 MW 80 MW 70 MW Pulse Length 1 μs 4 μs 3 μs Repetition Rate 50 pps 100 pps Beam Voltage 422 k. V 400 k. V 387 k. V Efficiency 46% 42% 40% Accelerator Facilities SPring-8 13 sockets (E 3712) PAL(Korea) 12 (PLS) + 50 (X-FEL)sockets (E 3712 type) KEK 9 sockets (E 3712) SAGA-LS 2 sockets (E 3712) AIST 2 sockets (E 3712) NSRL(China) 2 sockets (E 3712) CLARA(UK) 4 sockets (E 37333) 9

L-band pulse klystron for science Typical Operations 2. 8 m 3. 6 m E 37503 MBK 2. 3 m E 37504 E 3736 H MBK （C） Canon Electron Tubes & Devices Co. , Ltd. Parameter E 37504 E 37503 E 3736 Frequency 704 MHz 999. 516 MHz 1300 MHz Peak Power 1. 5 MW 20 MW 10 MW Pulse Duration 3. 5 ms 150 s 1. 5 ms Repetition Rate 14 pps 50 pps 10 pps Beam Voltage 115 k. V 159 k. V 117 k. V Beam Current 25 A 180 A 131 A Efficiency 62% 70% 66% Accelerator Facilities ESS 18 sockets (E 37504), under construction CERN 1 socket (E 37503) DESY 7 sockets (E 3736) SLAC/KEK 1 socket (E 3736) ★ Tapered Pillbox Window (E 3736, E 37503) ★ 6 -Beam Multi-Beam Klystron (E 3736, E 37503) 10

RF Windows Example of RF windows (S, C, X-band) Parameter S-band C-band X-band Frequency [MHz] 2856/2998 5712 11424/11994 Long Peak power [MW] Average power [k. W] Standard max. 50 (4 μs) max. 25 (3 μs) max. 28 Waveguide size max. 48 WR 284 Position on center axis （C） Canon Electron Tubes & Devices Co. , Ltd. max. 6 (5 μs) (max. 25) max. 12 WR 187 WR 90 Long Standard Electric field strength CETD windows • Variety of frequencies (UHF to X-band) • Customization possible Long Electric field strength Pillbox type Position on center axis 11

High efficiency klystron development in CETD Conventional design 5 cavities Output power: 7. 5 MW Efficiency: 45% Test result of prototypes #1 KEK Bunch Phase High Efficiency design 10 cavities 62% in simulation （C） Canon Electron Tubes & Devices Co. , Ltd. #2: Collector length and cavity frequencies were modified from #1. 1 m #2 FOR SALE Parameter #1 #2 Operating frequency [MHz] 2856 Beam voltage [k. V] 131. 1 140. 2 Beam current [A] 83. 4 88. 0 Output power [MW] 6. 2 7. 3 RF pulse width [ s] 4. 5 4. 0 Pulse repetition rate [pps] 100 Drive power [W] 60 72 Power efficiency [%] 56. 9 59. 2 Power gain [d. B] 50. 5 49. 0 Micro perveance [ A/V 3/2] 1. 76 1. 68 Solenoid power [k. W] 2. 6 - 59. 2% efficiency at 7. 3 MW output power was achieved. - New bunching method is effective for efficiency enhancement. 12

（C） Canon Electron Tubes & Devices Co. , Ltd.