OUTLINE

Background Requirements Test results Future tests

Please note information is limited until Hitachi present results in SC conference in September this year

Background and ObjectivesWall plug to RF efficiency

Pushing modulator designers to decreaseRise time and fall time

Wasted energy!

Recent ongoing program to increase klystron efficiency

from ~44% to >>65%Reduces power requirements and cost of modulators

What about solenoid power consumption ?

Collaboration between CERN, KEK and Japanese Industry (Hitatchi)Plus input from SLAC and CPI

Acceptance test completed successfully at Hitachi15 February 2019

Normal conducting Bucking coil to be installed before klystron assembly(Given to CERN for tests by CPI)

• Magnet now at CERN• Will confirm magnetic

measurements in coming weeks• Waiting for ‘warm’ counter coil

• Collaboration with Scandiova• Removal of ‘warm’ solenoid

power supplies from Xbox2 modulator

• Integration of SC magnet interlocks and power supplies

• Integration of klystron with SC magnet and modulator

Full results will be presented in SC magnet conference in September

14 - 15 September 2019

Thank you for your attention