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Published byNicholas Shandy
Modified over 2 years ago
RFQ Structural Mods Scott Lawrie
Vacuum Pump Flange Vacuum Flange Coolant Manifold Cooling Pockets Milled Into Vanes Potentially Bolted Together Tuner & Coupler Ports Vanes
Increased Pumping Area Original design: Twelve 12mm wide slots Pumping area = 7045 mm 2 Modified design: Four 25mm wide slots Pumping area = 9749 mm 2 (43% greater)
Simulation Bodies 25mm 12mm Section of pump’s debris-catching grill Inter-vane vacuum Bulk quadrant vacuum Pumping slot vacuum
Magnetic Field Results B-field plot path
≈1W total heat ≈10mW total heat Turbo-pump grill position B-field along plot path
Because B-field is not uniform, neither is heat load. Therefore 1W is an over-estimate, but let’s not push it! Magnetic Field Across Grill Assume 1mm pitch, square wire grill
Frequency varies with RFQ length Mode Frequency / MHz Resonant Frequency: Superfish
Present geometry Q = 12463 Shunt Impedance = 2830 MΩ/m Power/Quadrant/cm = 186 W
Increased quadrant radius to bring on tune Q = 12749 Shunt Impedance = 3022 MΩ/m Power/Quadrant/cm = 174 W
Reduced quadrant radius but increased vane width Q = 11504 Shunt Impedance = 2308 MΩ/m Power/Quadrant/cm = 228 W
20mm wide vanes allow: 1.More material, so greater thermal conductivity and strength 2.Easier to machine straight edges 3.More room for cooling pocket penetration toward vane tip
RFQ Thermal Analysis Scott Lawrie. Vacuum Pump Flange Vacuum Flange Coolant Manifold Cooling Pockets Milled Into Vanes Potentially Bolted Together Tuner.
Fine-Tuning the RFQ End Region. “…The Devil is in the Detail” RFQ bulk design very close to completion But before drafting need to check: Repeatability.
RFQ End Flange Dipole Tuner Finger Cooling. Basis of Study Need multi-purpose end flange –Adjustable dipole mode suppression fingers –Beam current transformer.
2.1GHz cavity without cell-to-cell coupling slots – 1.875” beam pipe Binping Xiao Aug
F.E.T.S. RFQ Mechanical Design by Peter Savage 7 th January 2010.
RFQ Matcher. What am I doing this time?! Concerned that modulations and matcher affect field flatness and frequency These are very small features How.
CFD Simulations of a Novel “Squirt-Nozzle and Water Bath” Cooling System for the RFQ.
The Front End Test Stand Collaboration ELECTROMAGNETIC DESIGN OF A RFQ FOR THE FRONT END TEST STAND AT RAL A. Kurup, A. Letchford The RAL front end test.
Imperial College London, FETS 1 RFQ development for high power beams 1. Introduction 2. Particle dynamics in the RFQ 3. Electrodynamic design of the RF.
Modifications Required on Model Before Meshing & Solving Slice up to define mesh in different areas –Transversely separate vane-tip region (about 16x16mm.
EMMA Cavity Update Emma Wooldridge 27/02/07. Requirements Initial Design Cavity Options & Optimisation Available Designs Future Work.
Design of Standing-Wave Accelerator Structure Jeff Neilson, Sami Tantawi, and Valery Dolgashev SLAC National Accelerator Laboratory US High Gradient Research.
Effect of RFQ Modulations on Frequency and Field Flatness.
704 MHz cavity design based on 704MHZ_v7.stp C. Pai
A. Lambert: Thermal and Mechanical Analysis PXIE RFQ Design Review, Berkeley, CA April 12, 2012 Thermal and Mechanical Analysis of the PXIE RFQ Andrew.
Replies to Spanish RFQ Questions (slides re-used from previous talks)
Q.17. A wire of Nichrome (a nickel–chromium–iron alloy commonly used in heating elements) is 1.0 m long and 1.0 mm 2 in cross-sectional area. It carries.
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.
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.
EXAMPLE 27.1: A copper wire carries a current of 10 A. It has a cross- sectional area of 0.05 cm 2. Estimate the drift velocity of the electrons.
Status of the 201 MHz Cavity and Coupling Coil Module Steve Virostek Lawrence Berkeley National Laboratory MICE Video Conference March 10, 2004.
Status of the rt CH-cavity - Anja Seibel -. Outline CH-Cavity CH-Parameter Heat distribution Cooling concept Final CH-Cavity First measurement results.
56 MHz SRF Cavity and Helium vessel Design C. Pai
ESS RFQ B. POTTIN and RFQ team CEA-IRFU. RFQ design Strategy 3 RF codes to validate calculations Consideration of machining and assembly possibilities.
PXIE RFQ Status RFQ Fabrication Summary Module 2 bead pull test complete (Timer will give a talk next). Vane machining continues. We are.
56 MHz SRF Cavity Thermal Analysis and Vacuum Chamber Strength C. Pai
Integration of Cavities and Coupling Coil Modules Steve Virostek Lawrence Berkeley National Laboratory MICE Collaboration Meeting March 28 – April 1, 2004.
Simple CFD Estimate of End Flange Tuner Finger Cooling.
STATUS OF THE NC BUNCHING RFQ (Sub-task: SC-RFQ) Antonio Palmieri INFN-LNL.
R&D Status and Plan on The Cryostat N. Ohuchi, K. Tsuchiya, A. Terashima, H. Hisamatsu, M. Masuzawa, T. Okamura, H. Hayano 1.STF-Cryostat Design 2.Construction.
Longitudinal Expansion of RFQ Vane Ends at Section-to-Section Interface.
Cavity support scheme options Thomas Jones 25/06/15 to 06/07/15 1.
PXIE RFQ Engineering Design Steve Virostek Engineering Division Lawrence Berkeley National Laboratory April 10, 2012 Project X Collaboration
1 Al Moretti, APC, Fermilab MAP- Winter Meeting February 28 - March 4, 2011 TJNAF Newport News, VA.
Laboratori Nazionali di Legnaro (Italy) DTL design status A. Pisent.
CH26.Problems Current and Resistance JH.
56 MHz SRF Cavity Cryostat support system and Shielding C. Pai
The force on a charge q moving with a velocity The magnitude of the force.
RAON LEBT Design Yonghwan Kim Institute for Basic Science Yonghwan Kim Institute for Basic Science.
1308 E&M Direct current, resistance, and circuits 1.At 20.0°C, a mainly silicon resistor has a resistance of 585 Ω, and a tungsten resistor has a resistance.
Chapter 30. Induction and Inductance What is Physics? Two Experiments Faraday's Law of Induction Lenz's Law Induction and.
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.
201-MHz RF Cavity Construction (Plan) for MICE Derun Li Center for Beam Physics Lawrence Berkeley National Laboratory NFMCC Meeting March 17, 2008.
Status of the Front End Test Stand April Infrastructure R8 refurbished Laser lab under construction Vacuum system for first section delivered Stands.
TESLA DAMPING RING RF DEFLECTORS DESIGN F.Marcellini & D. Alesini.
MICE RF and Coupling Coil Module Outstanding Issues Steve Virostek Lawrence Berkeley National Laboratory MICE Collaboration Meeting October 26, 2004.
201 MHz NC RF Cavity R&D Derun Li Center for Beam Physics Lawrence Berkeley National Laboratory WG3 at NuFact 2004 July 28, 2004.
201 MHz and 805 MHz Cavity Developments in MUCOOL Derun Li Center for Beam Physics Lawrence Berkeley National Laboratory Nufact 2002 Workshop, London,
704 MHz cavity folded tuner Thermal Analysis C. Pai
704MHz Warm RF Cavity for LEReC Binping Xiao Collider-Accelerator Department, BNL July 8, 2015 LEReC Warm Cavity Review Meeting July 8, 2015.
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