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Shuichi Noguchi, KEK6-th ILC School, November 20111 Auxiliary Components Input Power Coupler HOM Dumping Coupler Frequency Tuner He Jacket Magnetic Shield Cryostat ; Assembly & Alignment Part-2
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Shuichi Noguchi, KEK6-th ILC School, November 20112 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 / Pre-tuning Error. Feed-back can be used in CW operation.
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Shuichi Noguchi, KEK6-th ILC School, November 20113 Detuning Effect Input Power Reflection Cavity Field Phase Change
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Shuichi Noguchi, KEK6-th ILC School, November 20114 Phaser Diagram exp(j t) 90 o
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Shuichi Noguchi, KEK6-th ILC School, November 20115 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
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Shuichi Noguchi, KEK6-th ILC School, November 20116 Tuning Principle : by Slater Volume Change of ΔV Frequency Change of Δf
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Shuichi Noguchi, KEK6-th ILC School, November 20117 Normal Conducting Superconducting Stretch / Squeeze ~1 Piston Tuners 3000N/mm
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Shuichi Noguchi, KEK6-th ILC School, November 20118 123 Booster TunerBooster-1Booster-2Booster-3Experience Saclay-1Lever ScrewTTF Saclay-2Cam & LeverScrewUnder Test Blade LeverScrewUnder Test Ball-ScrewLarge ScrewWorm Gear Tested Slide JackWedgeScrewGearSTF Drive (Motor) Piezo 3000N/mm Need Force Boosters Common Configuration of Tuners
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Shuichi Noguchi, KEK6-th ILC School, November 20119 Drive Force Fixed Point With Bearing Acting Point Lever He Jacket Bellows Lever Arm
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Shuichi Noguchi, KEK6-th ILC School, November 201110 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
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Shuichi Noguchi, KEK6-th ILC School, November 201111 Saclay-1 on a TTF Cavity Double Lever Tuner Stiffness ~ 100 N/ m Second LeverFirst Lever Two Piezos Motor & Gear Screw
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Shuichi Noguchi, KEK6-th ILC School, November 201112 Saclay – 2 : Cam & Lever Cam Lever Arm Drive Screw Motor & Gear Shaft Support
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Shuichi Noguchi, KEK6-th ILC School, November 201113 Saclay - 2 : Cam & Lever Eccentric Shaft (Cam) Shaft Support with Piezo He Jacket Lever Arm
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Shuichi Noguchi, KEK6-th ILC School, November 201114
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Shuichi Noguchi, KEK6-th ILC School, November 201115 Blade : Jack System
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Shuichi Noguchi, KEK6-th ILC School, November 201116 Blade Tuner 25 N/ m Original DESY Revised INFN Not Stiff, Fatigue of Blade, K S =13N/ m
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Shuichi Noguchi, KEK6-th ILC School, November 201117 Blade : Jack, Lever & Screw Lever Piezo Gear & Motor Screw
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Shuichi Noguchi, KEK6-th ILC School, November 201118 TTF Blade Tuner
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Shuichi Noguchi, KEK6-th ILC School, November 201119 Geometry of the revised tuner 3.9.4 the piezo positions correspond to the double blade packs: as seen these packs withstand an higher load and therefore they were doubled.
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Shuichi Noguchi, KEK6-th ILC School, November 201120 The ILC Blade Tuner On the basis of the test results here presented the ILC Blade Tuner prototype is already close to fulfill all the XFEL and ILC specifications. The experience gained with the cold tests on the so called 3.0.0 prototype has been used for the final revision of the Blade Tuner, currently under construction. The first 8 units for Fermilab have been produced and 2 more are under construction. Double Piezo
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Shuichi Noguchi, KEK6-th ILC School, November 201121 Ball Screw : Large Ball Screw
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Shuichi Noguchi, KEK6-th ILC School, November 201122 A prototype coaxial ball screw tuner
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Shuichi Noguchi, KEK6-th ILC School, November 201123 Coaxial Ball Screw 500N/ m Need Long Stroke Piezo, Fatigue of Blade
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Shuichi Noguchi, KEK6-th ILC School, November 201124 Slide Jack Tuner Roller Wedge & Screw Caterpillar Roller Screw
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Shuichi Noguchi, KEK6-th ILC School, November 201125 Slide Jack Tuner 290N/ m Piezo Stack Drive Shaft Taper Invar Rod Caterpillar
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Shuichi Noguchi, KEK6-th ILC School, November 201126 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
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Shuichi Noguchi, KEK6-th ILC School, November 201127 Coupler Opening Piezo can be replaced
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Shuichi Noguchi, KEK6-th ILC School, November 201128 Stroke of Motor Tuner Cryomodule - CCryomodule - A Trouble of two motor tuners occurred in C2/ACC011 (Blade) and A4/MHI-09 (Slide-Jack/end) !!
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Shuichi Noguchi, KEK6-th ILC School, November 201129 DC Response of Piezo Tuner (Cryo-A) 50Hz/div 100Hz/div50Hz/div 50W RF Amp. + PLL (Vpiezo = 0 ~ +500V) 200Hz 350Hz 450Hz A1; MHI-05 KEK A3; MHI-07 KEK A2; MHI-06 KEK A4; MHI-09 KEK
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Shuichi Noguchi, KEK6-th ILC School, November 201130 Pulse Response by Pezo Tuner (Cryo-A) Piezo Drive Frequency = 250 Hz Pt Piezo Drive Pulse (freq., Vpp) Single Pulse Response (parameters ; frequency ; amplitude ; delay time)
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Shuichi Noguchi, KEK6-th ILC School, November 201131 He Jacket & Lorentz Detuning
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