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EMMA Cavity Update Emma Wooldridge 27/02/07
Requirements Initial Design Cavity Options & Optimisation Available Designs Future Work
Requirements 19 Cavities Run from multiple IOTs or klystrons Voltage ~ 135 – 200 kV Shunt Impedance ~ 3 MΩ Beam pipe radius 19 mm Length 110 mm flange to flange –76 mm internal width
Shunt Impedance P = Power V = Cavity Voltage R sh = Shunt Impedance
Initial Design The ELBE bunching cavity For use on EMMA the shunt impedance must be increased from 1.4 MΩ
Cavity Options Modified ELBE design Scaled PEP II design Something else?
Optimising the Design Change –Width A –Height B –Nose cone Penetration C Radius D Angle E (All done whilst keep the frequency at 1.3 GHz)
Effect of Cavity Width
Nose Cone Angle
ELBE Like Design Nose cones have been made smaller Corners have been chamfered
PEP II Like Design Nose cones shallower Shape is flattened out
New Design Torus shape High Shunt Impedance
Nose Cone Radius
Comparison Practical shunt impedance assumes 80% of theoretical value
Field on axis Voltage / V Distance / mm BPM at 97mm
Voltage / V BPM at 97mm
Distance / mm Voltage / V BPM at 97mm
Closest BPM approx. 97 mm away from cavity centre Maximum voltage from cavity on BPM is 1 V.
Further Work Include realistic beam tubes Investigate half re- entrant design Add Coupler Add Tuners – 5.5 MHz Could cavity HOMs be used as BPMs?
EMMA RF System Summary RF Requirements (S Berg): Aperture: –Aperture 34.7 mm (min) –Dispersion effects may increase by 3 – 4 mm Frequency: –Frequency range.
2.1GHz cavity without cell-to-cell coupling slots – 1.875” beam pipe Binping Xiao Aug
704MHz Warm RF Cavity for LEReC Binping Xiao Collider-Accelerator Department, BNL July 8, 2015 LEReC Warm Cavity Review Meeting July 8, 2015.
2.1 GHz Warm RF Cavity for LEReC Binping Xiao Collider-Accelerator Department, BNL June 15, 2015 LEReC Warm Cavity Review Meeting June 15, 2015.
13 th April 2007FFAG 07 Carl Beard EMMA RF System Carl Beard, Emma Wooldridge, Peter McIntosh, Peter Corlett, Andy Moss, James Rogers, Joe Orrett ASTeC,
29 th June 2006EuroFEL DS5 Feedback Carl Beard EMMA RF Systems.
RF scheme of electron linear accelerator with energy MeV Levichev A.E. Budker Institute of Nuclear Physics SB RAS.
=1 cavity: parameters Dimensions for cavity fabrication before any chemical polishing and at room Temp. outer ½ cell pick-up side inner ½ cells outer.
704 MHz warm cavity November 4, 2015 A.Zaltsman: SRF & warm RF components for LEReC1 A single cell 704 MHz warm cavity is used to correct the beam energy.
RF Sources and Combiners Emma Wooldridge. 28th-29th April 2004Joint Accelerator Workshop Outline Very quick RF power overview RF power sources –Triodes.
RF Tutorial G Burt. TM 010 Monopole Mode E H Beam Z 0 =377 Ohms.
Accelerator Science and Technology Centre Prospects of Compact Crab Cavities for LHC Peter McIntosh LHC-CC Workshop, CERN 21 st August 2008.
Engineering of the power prototype of the ESRF HOM damped cavity* V. Serrière, J. Jacob, A. Triantafyllou, A.K. Bandyopadhyay, L. Goirand, B. Ogier * This.
RFQ Structural Mods Scott Lawrie. Vacuum Pump Flange Vacuum Flange Coolant Manifold Cooling Pockets Milled Into Vanes Potentially Bolted Together Tuner.
TESLA DAMPING RING RF DEFLECTORS DESIGN F.Marcellini & D. Alesini.
Coupler Short-Range Wakefield Kicks Karl Bane and Igor Zagorodnov Wake Fest 07, 11 December 2007 Thanks to M. Dohlus; and to Z. Li, and other participants.
Cavity BPM Simulations A. Liapine. Analysis of the Existing BPMs BINP KEK.
I. Ben-Zvi Update Ilan Ben-Zvi for the Stony Brook, BNL and AES SPL teams Presented by Rama Calaga.
Status of work on the HOM coupler. 2 nd Harmonic cavity Meeting 11/II-2016 Thermal analyses with shims (Y.Terechkine). Gennady Romanov On behalf of Y.Terechkine.
IP BPM’s for ATF2 Vladimir Vogel KEK May30, 2005 Third Mini-Workshop on Nano Project at ATF.
704 MHz cavity folded tuner Thermal Analysis C. Pai
BEPCII Transverse Feedback System Yue Junhui Beam Instrumentation Group IHEP ， Beijing.
Sub-Harmonic Buncher design for CLIC Drive Beam Injector Hamed Shaker School of Particles and Accelerators Institute for Research in Fundamental Sciences,
CIEMAT ACTIVITIES ON STRIPLINE KICKERS I. Rodríguez.
KEK R&D for LHC Plan of 800MHz Cavity Calculation of 400MHz Cavity 16 th September 2009, LHC-CC09 at CERN K.Nakanishi.
BPM for FF test (ATF2) Vladimir Vogel KEK 2nd Nano Workshop, KEK, December 12, 2004.
Freq [GHz]Q0Q0 R/Q [Ω]±Voltage [kV]
30 th September 2004 High Power RF Couplers James Rogers High Power RF Couplers ELSRF Daresbury Laboratory.
Shuichi NoguchiTTC Meeting at Milano, Injector Cryomodule for cERL at KEK Cavity 2 Prototypes were tested. Input Coupler 2 Couplers were tested.
S. N. “ Cavities for Super B-Factory” 1 of 38 Sasha Novokhatski SLAC, Stanford University Accelerator Session April 20, 2005 Low R/Q Cavities for Super.
Update on RF parameters A.Lachaize11 th HPPS design meeting04/09/13.
Sensitivity of HOM Frequency in the ESS Medium Beta Cavity Aaron Farricker.
AM test sample. outside 20 mm inside 19 mm wallthickness 1 mm height features 4 mm.
LIU-SPS Beam Dynamics WG E. Shaposhnikova LIU-SPS coordination meeting
H. Haseroth Thursday, February 5-8, 2002 MUCOOL / MICE 1 RF & RF power H. Haseroth CERN Situation of 88 MHz test cavity Availability of amplifiers.
Travelling Wave Tube For Broadband amplifier helix TWTs (proposed by Pierce and others in 1946 ) are widely used For High average power purposes the coupled.
ALPHA Storage Ring Indiana University Xiaoying Pang.
Rossana Bonomi, Alberto Degiovanni, Marco Garlasché, Silvia Verdú Andrés 5.7 GHz high gradient test cavity
4GLS Cavity considerations for BBU Emma Wooldridge Accelerator Science and Technology Centre.
Development of a High Resolution Cavity BPM for the CLIC Main Beam J.R. Towler, S. Boogert, F.J. Cullinan, T. Lefevre, A. Lyapin, L. Soby, M.Wendt.
Andrew Moss ESLS 04 Daresbury Laboratory SRS Status The RF system The performance of the SRS Recent upgrades Upgrades planned Conclusion.
Functional Skills – Maths L2 Perimeter, Area and Volume Presented by: Bill Haining.
The selection of operating mode for 10MW L-band MBK with high efficiency Institute of Electronics, Chinese Academy of Sciences Beijing, China November.
Novel two beam accelerator structures for CLIC applications L.R.Carver, et al L.R. Carver 1,2,3, Y. Jiang 2, R. M. Jones 1,2,3, J.L. Hirshfield 2,4 1 School.
Proposals for conceptual design of the CLIC DR RF system at 2 GHz 20/10/2010 A.Grudiev.
RF 1/33 ALBA RF system why, how and other questions Francis Perez.
Preliminary design of SPPC RF system Jianping DAI 2015/09/11 The CEPC-SppC Study Group Meeting, Sept. 11~12, IHEP.
Cavity support scheme options Thomas Jones 25/06/15 to 06/07/15 1.
1 Al Moretti, APC, Fermilab MAP- Winter Meeting February 28 - March 4, 2011 TJNAF Newport News, VA.
Status of the 201 MHz Cavity and Coupling Coil Module Steve Virostek Lawrence Berkeley National Laboratory MICE Video Conference March 10, 2004.
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