Presentation is loading. Please wait.

Presentation is loading. Please wait.

ELECTROMAGNETIC, THERMAL, AND STRUCTURAL ANALYSIS OF RF CAVITIES USING ANSYS 2.1 GHz 3-Cell Cavity Cliff Brutus 7/9/15 Workbench Job Name: 2.1ghz_Symmetry_4-25-15.

Published byJuliana Pearson Modified over 9 years ago

Similar presentations

Presentation on theme: "ELECTROMAGNETIC, THERMAL, AND STRUCTURAL ANALYSIS OF RF CAVITIES USING ANSYS 2.1 GHz 3-Cell Cavity Cliff Brutus 7/9/15 Workbench Job Name: 2.1ghz_Symmetry_4-25-15."— Presentation transcript:

1 ELECTROMAGNETIC, THERMAL, AND STRUCTURAL ANALYSIS OF RF CAVITIES USING ANSYS 2.1 GHz 3-Cell Cavity Cliff Brutus 7/9/15 Workbench Job Name: 2.1ghz_Symmetry_4-25-15 APDL Job Name: 2_1_ghz_apdl_6-19-15

2 Overall Layout Waveguide RF Window Beam Direction Compact NEG and Ion Pump combination Arc Detector Viewport Cold Cathode Gauge Tuner Actuator Field Probe

3 CAD ModelRF Analysis Thermal AnalysisStructural Analysis RF, Thermal and Structural Simulation

4 Full Model Symmetry RF Analysis The cavity is not symmetric about its mid-plane since field probe port is on one side. Model is simplified by removing all the flanges, bolts and some ports that are not needed in the analysis Then the model is constructed to take advantage of the symmetry of the cavity about the beam axis

5 CRITICAL AREAS: 0.0008 mVOLUME: 0.005 m 6,423,586 Elements Frequency: 2114781678.364 Hz BODY AREAS: 0.0015 m Regions near coupling slots, nose cones, waveguide and tuner are especially important for accurate frequency prediction Mesh density enhanced 6x in this region Maintains accuracy while keeping solution time convenient RF Analysis

6 Electric Wall AreasUnselected surfaces for BC 284,799 Nodes RF Analysis

7 E-sum Nodal Solution 3.509E6 V/m

8 H-sum Nodal Solution 1.372E4 A/m

9 Ez path from -0.146m to 0.207m E-field along beam axis

10 Thermal Analysis Must determine scaling factor for power dissipation -> used the integral of the E-field along the beam axis also the stored energy as a comparison Scaling Factor = sqrt(U 250k /U ansys ) = 3902790.61 Thermal loads Calculated heat flux on walls from RF solution (H-field) Cooling channel convection HF = ½ * H 2 * R

11 ANSYS Freq.2.1147816GHz U @ 250KV0.0096875 J Epk3.509E6 V/m Hpk1.372E4 A/m Integ. Ez280164.1656 V Q-factor13902.0013 Workbench reaction: - 4706.89 W for ½ model ANSYS APDL Total Est. Power Loss including Tuner9261.92W ANSYS Workbench Total Est. Power Loss including Tuner9413.78W Est. Power Loss on cavity surface8728.58W Est. Power Loss on tuner685.2W Est. Power Loss on windowTBDW >> For the window, Binping has not finish the design to move the window further away from the cavity. Scaling Factor = sqrt(U 250k /U ansys ) = 3902790.61 Est. Power Loss @ 200KV = 5927.630773 W Est. Power Loss @ 250KV = 9261.923084 W -202.36 W -1127.4 W -166.83 W -342.6 W-2867.7 W

12 Nose Cone and Coupling Slots Cooling

13 ODIDx = yR 15.889.523.181.5mm 0.6251950.3748020190.1251960.059055in Flow3GPM h 12131 W/m^2-K Velocity 8.71 Ft/sec 340.2 K Worst Case Water Ambient Temperature : 305.15 K Thermal Simulation # 8494 h = 13153 W/m^2-K Dh=.2634in Flow1.5GPM Velocity8.83Ft/sc

14 Sliding and Rotating Support Structural Simulation Fix Support

15 Without vacuum & displacement on one end Axial thermal expansion: 0.0043” Body sizing: 0.001m Radial thermal expansion: 0.0014” Structural Simulation Coupling Slots Sizing: 0.0005m 9267 psi

16 Frequency Shift and Tuning 17562405 elements 23836406 nodes 9254748 elements 12963308 nodes

17 E-sum Nodal Solution

18

19 H-sum Nodal Solution

20

21 Ez path from -0.146m to 0.207m E-field along beam axis

22 RF Results ANSYS Freq.2.1154457 GHz U @ 250KV0.0096875 J Est. Power Loss 9006.96 W Epk @ 250KV4.5751E6 V/m Hpk @ 250KV1.6299E4 A/m Integ. Esum along Z @ 250KV 350005.26 V Q-factor14296.2845 Scaling Factor = U 250k /U ansys = 0.0096875/2*0.273637E-15 = 1.770137079E13 Ez int 0.8319E-1

23 Thermal Simulation ! Surface power density scaling; scaling factor must be calculated sfscale,hflux,1.770137079E13

24 Thermal Simulation

25 ODIDx = yR 15.889.523.181.5mm 0.6251950.3748020190.1251960.059055in Flow3GPM h 12131 W/m^2-K Velocity 8.71 Ft/sec 665.5 C = 338.65 K Worst Case Water Ambient Temperature : 305.15 K # 8494 h = 13153 W/m^2-K Dh=.2634in Flow1.5GPM Velocity8.83Ft/sc mp,kxx,14,401 !* Thermal Conductivity

26 Thermal Simulation 65.5 C = 338.65 K

27 Thermal Simulation 665.5 C = 338.65 K

28 Thermal Simulation 665.5 C = 338.65 K

29 Without vacuum & displacement on one end Axial thermal expansion: 0.15E-3 m = 0.0059” Body sizing: 0.001m Radial thermal expansion: 0.391E-4 m = 0.0015 ” Structural Simulation Coupling Slots Sizing: 0.0005m mp,ex,15,129.8E9 !* Young's Modulus (Pa) copper mp,kxx,15,401 !* Thermal Conductivity mp,alpx,15,1.77e-5 !* Coefficient of Thermal Expansion mp,nuxy,15,0.343 !* Poisson's Ratio mp,ex,15,10 !* Young's Modulus (Pa) Vacuum

30 Frequency Shift and Tuning 9254748 elements 12963308 nodes Frequency Shift = Ideal Shape Frequency – Steady State Deformed Shape Frequency =2115445725.041Hz – 2113456626.968 Hz = 1989098.073 Hz = 1.989 MHz 5MHz Tuning Range of tuner

31 E-sum Nodal Solution

32

33 H-sum Nodal Solution

34

35 RF Results ANSYS Freq.2.113456626 GHz U @ 250KV0.0096875 J Est. Power Loss 8993.06 W Epk @ 250KV4.6045E6 V/m Hpk @ 250KV1.6175E4 A/m Integ. Esum along Z @ 250KV 349828.06 V Q-factor14304.927 Scaling Factor = U 250k /U ansys = 0.0096875/2*0.273637E-15 = 1.738915814E13 Ez int 0.83891E-1

36 2.1 GHz Cavity

37 Thanks Silvia Verdu Andres Binping Xiao Chen Pai Steve Bellavia Chris Cullen Andrew Lambert (Berkley National Lab) Tom Schultheiss (AES)

Download ppt "ELECTROMAGNETIC, THERMAL, AND STRUCTURAL ANALYSIS OF RF CAVITIES USING ANSYS 2.1 GHz 3-Cell Cavity Cliff Brutus 7/9/15 Workbench Job Name: 2.1ghz_Symmetry_4-25-15."

Similar presentations

RFQ Cooling Studies.

RFQ Cooling Studies.
RFQ End Flange Dipole Tuner Finger Cooling. Basis of Study Need multi-purpose end flange –Adjustable dipole mode suppression fingers –Beam current transformer.

RFQ End Flange Dipole Tuner Finger Cooling. Basis of Study Need multi-purpose end flange –Adjustable dipole mode suppression fingers –Beam current transformer.
Tom Powers Practical Aspects of SRF Cavity Testing and Operations SRF Workshop 2011 Tutorial Session.

Tom Powers Practical Aspects of SRF Cavity Testing and Operations SRF Workshop 2011 Tutorial Session.
MICE RF and Coupling Coil Module Outstanding Issues Steve Virostek Lawrence Berkeley National Laboratory MICE Collaboration Meeting October 26, 2004.

MICE RF and Coupling Coil Module Outstanding Issues Steve Virostek Lawrence Berkeley National Laboratory MICE Collaboration Meeting October 26, 2004.
D. Lipka, MDI, DESY Hamburg, July 2012 Simulation of fields around spring and cathode for photogun D. Lipka, MDI, DESY Hamburg.

D. Lipka, MDI, DESY Hamburg, July 2012 Simulation of fields around spring and cathode for photogun D. Lipka, MDI, DESY Hamburg.
CFD Simulations of a Novel “Squirt-Nozzle and Water Bath” Cooling System for the RFQ.

CFD Simulations of a Novel “Squirt-Nozzle and Water Bath” Cooling System for the RFQ.
Normal-Conducting Photoinjector for High Power CW FEL Sergey Kurennoy, LANL, Los Alamos, NM, USA An RF photoinjector capable of producing high continuous.

Normal-Conducting Photoinjector for High Power CW FEL Sergey Kurennoy, LANL, Los Alamos, NM, USA An RF photoinjector capable of producing high continuous.
MICE RF Cavity Design and Fabrication Update Steve Virostek Lawrence Berkeley National Laboratory MICE Collaboration Meeting October 27, 2004.

MICE RF Cavity Design and Fabrication Update Steve Virostek Lawrence Berkeley National Laboratory MICE Collaboration Meeting October 27, 2004.
1 Design of Gridded-Tube Structures for the 805 MHz RF Cavity Department of Mechanical, Materials, and Aerospace Engineering M. Alsharoa (PhD candidate)

1 Design of Gridded-Tube Structures for the 805 MHz RF Cavity Department of Mechanical, Materials, and Aerospace Engineering M. Alsharoa (PhD candidate)
Integration of Cavities and Coupling Coil Modules Steve Virostek Lawrence Berkeley National Laboratory MICE Collaboration Meeting March 28 – April 1, 2004.

Integration of Cavities and Coupling Coil Modules Steve Virostek Lawrence Berkeley National Laboratory MICE Collaboration Meeting March 28 – April 1, 2004.
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 201 MHz Cavity and Coupling Coil Module Steve Virostek Lawrence Berkeley National Laboratory MICE Video Conference March 10, 2004.
Injector RF Design Review November 3, 2004 John Schmerge, SLAC LCLS RF Gun Thermal Analysis John Schmerge, SLAC November 3,

Injector RF Design Review November 3, 2004 John Schmerge, SLAC LCLS RF Gun Thermal Analysis John Schmerge, SLAC November 3,
Progress on the MICE 201 MHz Cavity Design Steve Virostek Lawrence Berkeley National Lab RF Working Group Fermilab August 22, 2007  automatic.

Progress on the MICE 201 MHz Cavity Design Steve Virostek Lawrence Berkeley National Lab RF Working Group Fermilab August 22, 2007  automatic.
Status of Coil Structural Design and Magnetic-Structural Analysis Presented by X.R. Wang Contributors: ORNL: D. Williamson UCSD: S. Malang, A.R. Raffray.

Status of Coil Structural Design and Magnetic-Structural Analysis Presented by X.R. Wang Contributors: ORNL: D. Williamson UCSD: S. Malang, A.R. Raffray.
RF-Accelerating Structure: Cooling Circuit Modeling Riku Raatikainen 16.8.2010.

RF-Accelerating Structure: Cooling Circuit Modeling Riku Raatikainen
Coupler without copper coating S. Kazakov 11/13/2013.

Coupler without copper coating S. Kazakov 11/13/2013.
Rossana Bonomi, Alberto Degiovanni, Marco Garlasché, Silvia Verdú Andrés 5.7 GHz high gradient test cavity 16 - 06 - 2010.

Rossana Bonomi, Alberto Degiovanni, Marco Garlasché, Silvia Verdú Andrés 5.7 GHz high gradient test cavity
RFQ Thermal Analysis Scott Lawrie. Vacuum Pump Flange Vacuum Flange Coolant Manifold Cooling Pockets Milled Into Vanes Potentially Bolted Together Tuner.

RFQ Thermal Analysis Scott Lawrie. Vacuum Pump Flange Vacuum Flange Coolant Manifold Cooling Pockets Milled Into Vanes Potentially Bolted Together Tuner.
ELECTROMAGNETIC, THERMAL, AND STRUCTURAL ANALYSIS OF RF CAVITIES USING ANSYS 2.1 GHz 3-Cell Cavity Cliff Brutus 6/15/15 Job Name: 2.1ghz_Symmetry_4-25-15.

ELECTROMAGNETIC, THERMAL, AND STRUCTURAL ANALYSIS OF RF CAVITIES USING ANSYS 2.1 GHz 3-Cell Cavity Cliff Brutus 6/15/15 Job Name: 2.1ghz_Symmetry_
Bias Magnet for the Booster’s 2-nd Harmonic Cavity An attempt to evaluate the scope of work based of the existing RF design of the cavity 9/10/2015I. T.

Bias Magnet for the Booster’s 2-nd Harmonic Cavity An attempt to evaluate the scope of work based of the existing RF design of the cavity 9/10/2015I. T.

Similar presentations

Ads by Google