On the Korean Contributions for ILC RF Sources 2nd ILC Workshop in Korea December 28-29, 2004 포항공대 가속기연구소 박 성 주

ILC RF Requirements based on TESLA500

Example of ILC Layout

Comparision between Commercial MBKs THALES TH1801 CPI VKL-8301 TOSHIBA E3736 Frequency [GHz] 1.3 ← RF Output Power [MW] 10 Beam Voltage / Current [kV/A] 117 / 131 Beam Perveance 3.3 Efficiency [%] 65 Number of Beams 7 6 Cathode Loading [A/cm2] 5.5 < 2.5 < 2.1 RF Pulse Duration [ms] 1.5 Rep. Rate [Hz] Gain [dB] 48.2 Expected Lifetime [hour] 40,000 100,000

Appearances of Commercial MBKs THALES TH1801 CPI VKL-8301 TOSHIBA E3736

Estimation of Wall-Plug Power for RF System

Possibility of MBK Fabrication in Korea Tube related capabilities in Korea: PAL have full capabilities for providing pulsed 80-MW S-band RF system. KAPRA is developing CW 1-MW 700-MHz Klystron for PEFP proton linac. There are considerable activities in Universities (SNU, POSTECH,…). In-house tube R&D can be performed but not recommended. Localization of tube design followed by the acquisition of fabrication drawings (if possible !) would be the right choice for fast fabrication. Possible collaboration scheme: PAL-KAPRA for high-power RF technologies and infra-structures. Distributed resources (mainly among Universities) for investigating various physics & engineering isssues.

PAL’s Potential for MBK Fabrication Special facilities for klystron fabrication XHV Baking Station Various Furnaces HP Microwave Test-Lab Infra-Structures Chemical Cleaning Shop, Plating Facility, Welding Shop, 3D CMM,… Magnetic Field Measurement Facilities Full-line of Microwave Equipments High-Quality Manpowers Beam-Dynamics Experts Mechanical Engineers High-Power Electrical Engineers RF Engineers (LL & HL) XHV Experts were involved in the PLS construction, now in the PAL XFEL project Expected Production Rate: ~ 10 tubes/year