rf systems wg2 main linac
DESCRIPTION
RF Systems WG2 Main Linac. S. Choroba. RF System Layout. 2 Talks on RF System Layout Choroba, DESY: TESLA RF System Baseline Tantawi, SLAC: Comments on the RF System for ILC. Tesla RF System Baseline S.Choroba. 572 RF Stations 36 Cavities per Station 10MW Multibeam Klystrons in Tunnel - PowerPoint PPT PresentationTRANSCRIPT
RF System Layout
2 Talks on RF System Layout
Choroba, DESY: TESLA RF System Baseline
Tantawi, SLAC: Comments on the RF System for ILC
Tesla RF System Baseline S.Choroba
•572 RF Stations •36 Cavities per Station•10MW Multibeam Klystrons in Tunnel•Bouncer Type Modulator installed in Access Halls•Pulse Cables connecting Modulator and Pulse transformer•Linear Waveguide RF Distribution System with Circulators
Comments on the RF System for the ILC
Tantawi, SLAC
=> no circulators
=> 20000 magnetronsThese ideas have already been discussed within the TESLACollaboration before: e.g. the use of 20000 IOTs (magnetrons probably too noisy). But might be worthwhile to investigate them again
Modulators•Bouncer Modulator is state of the art for 1.7ms, 10Hz, 120kV•Several units have been build and are in operation•Subunits are made by industry
Modulators cont.
Modulator Design Issues, Jensen FNAL
•Bouncer Modulators developed, built and operated by FNAL (well known and proven design)•Proposed ideas to improve the bouncer modulator (control, switch, capacitors etc., some of these are already at VUVFEL modulators)•Other modulators should be investigated: e.g.SNS type, Thomcast modulator, Bouncer with multiple klystrons, Marx bank modulator, Series Switch modulator and mismatched PFN
RF Distribution
Baseline: linear distribution with circulators
Hybrid C oupl er RF Distributi on
Cryomodule 1 Cryomodule 2 Cryomodule 3
RF from Kl ystron
cavity i nput coupler
waveguide transformer
hybrid coupler
circulator load
DETAIL
RF Distribution cont.Alternative Distribution without circulators, Tantawi, SLAC
•Similar ideas have been developed before at DESY•Sami Tantawi will come to DESY to discuss these and similar ideas
RF Distribution cont.
Other waveguide components discussed by Sami Tantawi:
•Active window•Ferrite Tuner