1. Shuichi Noguchi,SRF2007,10.71 New Tuners for ILC Cavity Application Shuichi Noguchi KEK

2. Shuichi Noguchi,SRF2007,10.72 Outline  Brief Introduction  New Tuners for ILC Application Elliptical Cavity Pulsed Operation High Gradient Lorentz Detuning Compensation ( Cavity Deformation by Maxwell Stress )

3. Shuichi Noguchi,SRF2007,10.73 Frequency Tuner  RF Accelerating Cavities usually have Tuners.  They are used to tune the Cavity Resonance Frequency, in order to minimize the reflected RF power, usually.  Tuning Accuracy << Resonant Band Width  They must cover the Wide Range of the Fabrication Error.  Feed-back can be used in CW operation.

4. Shuichi Noguchi,SRF2007,10.74 Possible Error Sources Error Sources Magnitude / Bandwidth Speed Fabrication Error Very LargeStatic Drift ( Temperature, Pressure )ComparableSlow Micro-Phonics ( Vibration )SmallSlow Beam Loading ( if  is not 0 ) ComparableSlow De-tuning OffsetComparableOffset Lorentz De-tuningComparableFast in Transient

5. Shuichi Noguchi,SRF2007,10.75 Tuning Principle : by Slater Volume Change of ΔV  Frequency Change of Δf

6. Shuichi Noguchi,SRF2007,10.76 Normal ConductingSuperconducting Stretch / Squeeze  ～１ Piston Tuners 3000N/mm

7. Shuichi Noguchi,SRF2007,10.77 New Tuners Several Candidates for the ILC Cavity Requirement Stroke > 2mm, Axial Force > 6000N It must not move the Beam Axis. Compact and Reliable Fast Response  Piezo

8. Shuichi Noguchi,SRF2007,10.78 123 Booster TunerBooster-1Booster-2Booster-3Experience Saclay-1Lever ScrewTTF Saclay-2Cam & LeverScrewUnder Test Blade LeverScrewUnder Test Ball-ScrewLarge ScrewWorm Gear Under Test Slide JackWedgeScrewGearUnder Test Drive (Motor) Piezo 3000N/mm Need Force Boosters Common Configuration of Tuners

9. Shuichi Noguchi,SRF2007,10.79 Drive Force Fixed Point Acting Point Lever He Jacket Bellows Lever Arm

10. Shuichi Noguchi,SRF2007,10.710 Saclay -1 : Operation Principle Design by M. Maurier and P. Leconte based of the MACSE tuner design  L screw  L arms  L cavity Second Lever First Lever Motor Notch to absorb Span Change Support Rod Screw

11. Shuichi Noguchi,SRF2007,10.711 Saclay-1 on a TTF Cavity Double Lever Tuner Stiffness ~ 100 N/  m Second LeverFirst Lever Two Piezos Motor & Gear Screw

12. Shuichi Noguchi,SRF2007,10.712 Saclay – 2 : Cam & Lever Cam Lever Arm Drive Screw Motor ＆ Gear Shaft Support

13. Shuichi Noguchi,SRF2007,10.713 Saclay - 2 : Cam & Lever Eccentric Shaft (Cam) Shaft Support with Piezo He Jacket Lever Arm

14. Shuichi Noguchi,SRF2007,10.714

15. Shuichi Noguchi,SRF2007,10.715 Blade : Jack System

16. Shuichi Noguchi,SRF2007,10.716 Blade : Jack, Lever & Screw Lever Piezo Gear & Motor Screw

17. Shuichi Noguchi,SRF2007,10.717 Blade Tuner 25 N/  m Original DESY Revised INFN Not Stiff, Fatigue of Blade, K S =13N/  m

18. Shuichi Noguchi,SRF2007,10.718 Ball Screw : Large Ball Screw

19. Shuichi Noguchi,SRF2007,10.719 Coaxial Ball Screw 500N/  m Need Long Stroke Piezo, Fatigue of Blade

20. Shuichi Noguchi,SRF2007,10.720 Slide Jack Tuner Roller Wedge & Screw Caterpillar Roller Screw

21. Shuichi Noguchi,SRF2007,10.721 Slide Jack Tuner 290N/  m Piezo Stack Drive Shaft Taper Invar Rod Caterpillar

22. Shuichi Noguchi,SRF2007,10.722 Tesla-like STF Baseline Cavity Package Pulse motor (outside) Piezo element Replaceable Motor drive shaft Titanium Jacket 2K He line Support base Invar Rod Slide Jack Tuner Nb/Ti Flange Inside Magnetic Shield Stiff Endplate Fixed Coupler

23. Shuichi Noguchi,SRF2007,10.723 Summary  Several Candidates for ILC Application  After Experimental Demonstration of Performances and Comparison from many Aspects, Decision will be done.  Some of these Tuners can be used for other Application, with Simplified Design.