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

2. ILC RF Requirements based on TESLA500

3. Example of ILC Layout

4. 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

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

6. Estimation of Wall-Plug Power for RF System

7. 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.

8. 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