advanced rf ko excitation methods for high quality spills
play

Advanced RF-KO excitation methods for high quality spills Slow - PowerPoint PPT Presentation

Oct 28, 2023 •160 likes •594 views

Advanced RF-KO excitation methods for high quality spills Slow Extraction Workshop 2019, Fermilab, July 22nd-24th 2019 Fiona Faber Heidelberg Ion-Beam Therapy Center Overview HIT-Facility Accelerator RF-KO Examined

  1. Advanced RF-KO excitation methods for high quality spills Slow Extraction Workshop 2019, Fermilab, July 22nd-24th 2019 Fiona Faber Heidelberg Ion-Beam Therapy Center

  2. Overview • HIT-Facility • Accelerator • RF-KO • Examined excitation methods • Simulated micro spill structure • Extraction process • Experimental results F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 2

  3. Heidelberg Ion-Beam Therapy Center Cancer therapy using p and C-ions Particle energy defining depth in matter Irradiating tumor slice by slice Slow extraction used for scanning the tumor 668 patients in 2018 F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 3

  4. HIT-Facility Treatment: p (~10 10 particles/spill), C (~10 8 particles/spill) Experiments: p, He, C, O Synchrotron, 3 Ion sources (48 - 430 MeV/u) Linac (7 MeV/u) 3 treatment rooms High energy beam transport Gantry Beam dump Experimental area F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 4

  5. Extraction method RF-KO • Excitation of 3rd order resonance • Triangular stable phase space area is formed (separatrix) • Optical elements constant during extraction • Increase of transversal emittance with RF-signal • The signal of the excitation function defines the quality of the spill K. Noda et al., Nucl. Instr. and Meth. A 374 (1996) F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 5

  6. Extraction method RF-KO • Excitation of 3rd order resonance • Triangular stable phase space area is formed (separatrix) • Optical elements constant during extraction • Increase of transversal emittance with RF-signal • The signal of the excitation function defines the quality of the spill K. Noda et al., Nucl. Instr. and Meth. A 374 (1996) F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 6

  7. Extraction method RF-KO • Excitation of 3rd order resonance • Triangular stable phase space area is formed (separatrix) • Optical elements constant during extraction • Increase of transversal emittance with RF-signal • The signal of the excitation function defines the quality of the spill F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 7

  8. Intensity feedback loop • Intensity feedback loop Exciter enables controlled mean extraction rates (PID) Ionization chambers • Higher average intensity -> faster irradiation • Less machine tuning • Fast variation of extraction rates C. Schoemers et al., Nucl. Instr. Meth. A vol. 795 (2015), pp. 92 - 99. F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 8

  9. Motivation Spill with intensity control and AM To prevent peaks exceeding the measurement limit the mean intensity is reduced -> increasing the treatment time Increasing spill quality: • Higher mean intensity -> decreasing treatment time • Higher comfort for patients • Increasing number of patients C: 1.55 · 10 8 extracted particles E: 430.1 MeV/u Resolution: 50 m s/bin F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 9

  10. Frequency modulation methods used at HIMAC 1995 2002 Time Scale: 200 ms/div Time Scale: 2 ms/div | 500 m s/div K. Noda et al., Nucl. Instr. and Meth. A 374 K. Noda et al., Nucl. Instr. and Meth. A 492 (1996) 269-277 (2002) 253 - 263 F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 10

  11. Simulation • Combining MADX for tracking & Python for analysis Exciter • Only synchrotron lattice • Space charge and positioning inaccuracies neglected • Start distribution: Gaussian particle distribution after acceleration • Extracted defined by passing electrostatic septum Electrost. septum Magn. septum F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 11

  12. Excitation methods Pseudo random binary phase shift keying (PRBPSK) Exemplary excitation signal Excitation spectrum F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 12

  13. Simulated micro spill structure for PRBPSK F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 13

  14. Excitation methods Single frequency modulation (FM) Exemplary excitation signal Frequency modulation Idea by K. Noda et al., Nucl. Instr. and Meth. A 492 (2002), pp. 253 - 263 F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 14

  15. Excitation methods Single frequency modulation (FM) Exemplary excitation signal Excitation spectrum Idea by K. Noda et al., Nucl. Instr. and Meth. A 492 (2002), pp. 253 - 263 F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 15

  16. Simulated micro spill structure for single FM Frequency modulation Spill F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 16

  17. Simulated micro spill structure for single FM Frequency modulation PRBPSK Single FM Spill F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 17

  18. Excitation methods Dual frequency modulation (FM) Exemplary excitation signal Frequency modulation Idea by K. Noda et al., Nucl. Instr. and Meth. A 492 (2002), pp. 253 - 263 F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 18

  19. Excitation methods Dual frequency modulation (FM) Exemplary excitation signal Excitation spectrum Idea by K. Noda et al., Nucl. Instr. and Meth. A 492 (2002), pp. 253 - 263 F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 19

  20. Simulated micro spill structure for dual FM Frequency modulation Spill F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 20

  21. Simulated micro spill structure for dual FM Frequency modulation PRBPSK Dual FM Spill F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 21

  22. Excitation process F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 22

  23. Excitation process Direct excitation Washed out spill -> high quality + synchrotron motion (Chromaticity ≠ 0 & bunched) Caused by exciting the diffusion region* *Idea by K. Noda et al., Nucl. Instr. and Meth. A 492 (2002), pp. 253 - 263 F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 23

  24. Excitation process Caused by exciting the extraction region* Driven oscilation effect *Idea by K. Noda et al., Nucl. Instr. and Meth. A 492 (2002), pp. 253 - 263 F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 24

  25. Excitation process Simulation of isolated driven oscillation of betatron amplitudes of particles 3 particles starting at 100%, 50% and 5% of the initial emittance while excited by the single FM F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 25

  26. Excitation process Simulation of isolated driven oscillation of betatron amplitudes of particles 3 particles starting at 100%, 50% and 5% of the initial emittance while excited by the single FM Kick at cycle restart depending on phase F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 26

  27. Excitation methods Extended frequency modulation (FM) Exemplary excitation signal Frequency modulation F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 27

  28. Excitation methods Extended frequency modulation (FM) Exemplary excitation signal Excitation spectrum F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 28

  29. Simulated micro spill structure for extended FM Frequency modulation Spill F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 29

  30. Simulated micro spill structure for extended FM Frequency modulation PRBPSK Extended FM Spill F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 30

  31. Experiment • Particle: Carbon • Energy: 430.1 MeV/u • Particles: 4 · 10 8 per spill Resolution: 50 m s/bin • • Bunched: f sync = 500 Hz • Chromaticity: -0.79 F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 31

  32. Measured macro spills confirming simulations (Constant exciter amplitude) PRBPSK Single FM 1Hz Dual FM Extended FM 1Hz 1Hz F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 32

  33. Experimental results (Intensity control + AM) PRBPSK Extended FM Sweep rate: 1800 Hz Optimized by parameter scans: • Lower frequency limit • Higher frequency limit • Sweep rate • Frequency limits of additional FM F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 33

  34. Experimental results (Intensity control + AM) PRBPSK Extended FM Sweep rate: 1800 Hz <MM> = 2.18 <MM> = 1.47 1.55 · 10 8 particles extracted in total Max-to-Mean ratio: Calculation of 200 bins ≙ 10 ms F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 34

  35. Experimental results (Intensity control + AM) PRBPSK Extended FM Sweep rate: 1800 Hz Zoom Zoom PRBPSK Extended FM Sweep rate: 1800 Hz F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 35

  36. Extraction rate distribution of PRBPSK and extended FM F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 36

  37. Extraction rate distribution of PRBPSK and extended FM Reduction of spill ripple by 45% ! F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 37

  38. Excitation spectrum Extended FM Sweep rate: 1 Hz F. Faber Slow Extraction Workshop 2019 - Fermilab, 22nd-24th July 2019 38

Recommend

1 Excitatory Inhibitory excitation inhibition 2 excitation excitation inhibition

1 Excitatory Inhibitory excitation inhibition 2 excitation excitation inhibition

1 Excitatory Inhibitory excitation inhibition 2 excitation excitation inhibition inhibition Synaptic strength (receptors, transporters, Metabolic changes transmitter release, etc.) (anoxia, hypoglycemia) Membrane properties Cell

264 views • 9 slides
Quantum Chemistry Workshop (Advanced) Excitation Energies and Excited State Densities Mikael

Quantum Chemistry Workshop (Advanced) Excitation Energies and Excited State Densities Mikael

PRACE Spring School in Computational Chemistry 2018 Quantum Chemistry Workshop (Advanced) Excitation Energies and Excited State Densities Mikael Johansson http://www.iki.fi/mpjohans Objective: To learn how to compute electronic excitation

1.35k views • 33 slides
Resonant Excitation of Envelope Modes as an Emittance Diagnostic in High-Intensity Circular

Resonant Excitation of Envelope Modes as an Emittance Diagnostic in High-Intensity Circular

Resonant Excitation of Envelope Modes as an Emittance Diagnostic in High-Intensity Circular Accelerators Will Stem 3-19-2015 Outline Some Traditional Methods of Measuring Emittance Emittance Dependence on Envelope Mode Frequency

330 views • 32 slides
Day 3 Day 3 Day 3 Resonant photon excitation in EBIT Synchrotron radiation (PETRAIII),

Day 3 Day 3 Day 3 Resonant photon excitation in EBIT Synchrotron radiation (PETRAIII),

Day 3 Day 3 Day 3 Resonant photon excitation in EBIT Synchrotron radiation (PETRAIII), Free-electron lasers (LCLS) , provide X-rays with high power and energy resolution Resonant photon excitation in EBITs Photon beams interact with

486 views • 31 slides
EXCITATION SPECTRUM OF INTERACTING QUANTUM GASES JAN DEREZI NSKI Dept. of Math. Methods in

EXCITATION SPECTRUM OF INTERACTING QUANTUM GASES JAN DEREZI NSKI Dept. of Math. Methods in

EXCITATION SPECTRUM OF INTERACTING QUANTUM GASES JAN DEREZI NSKI Dept. of Math. Methods in Phys., Faculty of Physics, University of Warsaw I will describe arguments indicating that homogeneous interacting quantum gas, both Bosonic and

2.03k views • 146 slides
1 whatever is the poorest, is going to be limiting overall performance. Your efficiency is going

1 whatever is the poorest, is going to be limiting overall performance. Your efficiency is going

MITOCW | 4. Charge Excitation The following content is provided under a Creative Commons license. Your support will help MIT OpenCourseWare continue to offer high quality educational resources for free. To make a donation or view additional

654 views • 32 slides
Michael G. Rossmann and Hybrid Methods: High Quality Interpretation of Low Resolution CryoEM

Michael G. Rossmann and Hybrid Methods: High Quality Interpretation of Low Resolution CryoEM

Michael G. Rossmann and Hybrid Methods: High Quality Interpretation of Low Resolution CryoEM Maps S. Saif Hasan -Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore MD -Center for

445 views • 26 slides
Excitation and Ionisation in High Energy Density Plasmas Steven Rose Imperial College London

Excitation and Ionisation in High Energy Density Plasmas Steven Rose Imperial College London

Excitation and Ionisation in High Energy Density Plasmas Steven Rose Imperial College London University of Oxford, UK Overview Laser-produced plasmas can produce the highest laboratory thermal radiation fields (i.e. excluding laser

957 views • 76 slides
A Standard f A S tandard for or High Quality High Quality Instruction Instruction

A Standard f A S tandard for or High Quality High Quality Instruction Instruction

Charles Smith, Ph.D. Executive Director, David P. Weikart Center for Youth Program Quality #readyby21 A Standard f A S tandard for or High Quality High Quality Instruction Instruction Higherorderengagement

386 views • 36 slides
EXCITATION SPECTRUM OF INTERACTING BOSONS IN THE MEAN FIELD INFINITE VOLUME LIMIT JAN DEREZI

EXCITATION SPECTRUM OF INTERACTING BOSONS IN THE MEAN FIELD INFINITE VOLUME LIMIT JAN DEREZI

EXCITATION SPECTRUM OF INTERACTING BOSONS IN THE MEAN FIELD INFINITE VOLUME LIMIT JAN DEREZI NSKI Dept. of Math. Methods in Phys., Faculty of Physics, University of Warsaw Joint work with MARCIN NAPI ORKOWSKI We show that low lying

510 views • 32 slides
Chapter 14 Methods for Quality Improvement Quality, Processes, and Systems Quality of a good or

Chapter 14 Methods for Quality Improvement Quality, Processes, and Systems Quality of a good or

Chapter 14 Methods for Quality Improvement Quality, Processes, and Systems Quality of a good or service the extent to which it satisfies user needs and preferences 8 Dimensions of Quality Performance Features Reliability

677 views • 40 slides
DRONING ON: A REVIEW OF UAV USE IN RECENT SPILLS ATTENDED BY ITOPF UKSpill Seminar 18, U.K.

DRONING ON: A REVIEW OF UAV USE IN RECENT SPILLS ATTENDED BY ITOPF UKSpill Seminar 18, U.K.

DRONING ON: A REVIEW OF UAV USE IN RECENT SPILLS ATTENDED BY ITOPF UKSpill Seminar 18, U.K. Susannah Domaille, ITOPF Video: Mentor Marine ITOPF Worldwide Over 800 spills experience Promote effective spill response P ROMOTING EFFECTIVE SPILL

413 views • 19 slides
Regional Leadership Forums on Advanced Illness Care The Coalition To Transform Advanced Care

Regional Leadership Forums on Advanced Illness Care The Coalition To Transform Advanced Care

Regional Leadership Forums on Advanced Illness Care The Coalition To Transform Advanced Care Eugene Washington PCORI Engagement Award C-TACs Vision: all Americans with advanced illness will receive comprehensive, high-quality, person- and

271 views • 11 slides
Squeeze-and-Excitation Networks Jie Hu 1,* Li Shen 2,* Gang Sun 1 2 Department of Engineering

Squeeze-and-Excitation Networks Jie Hu 1,* Li Shen 2,* Gang Sun 1 2 Department of Engineering

Squeeze-and-Excitation Networks Jie Hu 1,* Li Shen 2,* Gang Sun 1 2 Department of Engineering Science, 1 Momenta University of Oxford Large Scale Visual Recognition Challenge Squeeze-and-Excitation Networks (SENets) formed the foundation of our

320 views • 19 slides
Leading the Charge in the Vanadium Industry Gabanintha Vanadium Project Advanced High Grade

Leading the Charge in the Vanadium Industry Gabanintha Vanadium Project Advanced High Grade

Leading the Charge in the Vanadium Industry Gabanintha Vanadium Project Advanced High Grade Low Cost Large Scale High Quality Long Life Development Project ASX: TMT, TMTO; FRA: TN6 www.tmtlimited.com.au RIU Sydney

696 views • 38 slides
Lower and upper estimates on the excitation threshold for DNLS lattices J. Cuevas, N.I.

Lower and upper estimates on the excitation threshold for DNLS lattices J. Cuevas, N.I.

Definition of the excitation threshold Upper and lower estimates for the excitation threshold Figures from numerical studies Discussion Lower and upper estimates on the excitation threshold for DNLS lattices J. Cuevas, N.I. Karachalios and F.

246 views • 22 slides
Monitoring and data filtering I. Classical Methods Advanced Quantitative Methods in Herd

Monitoring and data filtering I. Classical Methods Advanced Quantitative Methods in Herd

Monitoring and data filtering I. Classical Methods Advanced Quantitative Methods in Herd Management Dan Brge Jensen, IPH Dias 1 Outline Framework and Introduction Shewart Control chart Basic principles Examples: milk yield and

515 views • 33 slides
Advanced Methods for Data Processing and Reconstruction Accelerating Reconstruction on advanced

Advanced Methods for Data Processing and Reconstruction Accelerating Reconstruction on advanced

Advanced Methods for Data Processing and Reconstruction Accelerating Reconstruction on advanced hardware architectures: Tracking on accelerators Graph Neural Networks for reconstruction Accelerating ML inference Allison Reinsvold Hall (FNAL),

572 views • 17 slides
NEW MULTI-PROCESSOR DIGITAL EXCITATION SYSTEM ECS2100 OVERVIEW Digital Excitation System Logic

NEW MULTI-PROCESSOR DIGITAL EXCITATION SYSTEM ECS2100 OVERVIEW Digital Excitation System Logic

NEW MULTI-PROCESSOR DIGITAL EXCITATION SYSTEM ECS2100 OVERVIEW Digital Excitation System Logic Structure Power Structure Primary Function - Supply Field Current Voltage Regulators provide field current To the field of main exciter

641 views • 47 slides
22 Advanced Topics 4: Adaptation Methods In this section, we will cover methods for adapting

22 Advanced Topics 4: Adaptation Methods In this section, we will cover methods for adapting

22 Advanced Topics 4: Adaptation Methods In this section, we will cover methods for adapting sequence-to-sequence models to a partic- ular type of problem. As a specific subset of these methods, we also often discuss domain adaptation : adapting

321 views • 4 slides
SLIDES &amp; Accessories - high quality furniture fittings - high quality furniture fittings

SLIDES &amp; Accessories - high quality furniture fittings - high quality furniture fittings

Ta b l e SLIDES &amp; Accessories - high quality furniture fittings - high quality furniture fittings SISO A/S MILEPARKEN 11 DK - 2740 SKOVLUNDE (COPENHAGEN) DENMARK PHONE: (+45) 45 830 900 FAX: (+45) 45 830 444 - high quality furniture

715 views • 48 slides
SLIDES &amp; Accessories - high quality furniture fittings - high quality furniture fittings

SLIDES &amp; Accessories - high quality furniture fittings - high quality furniture fittings

Ta b l e SLIDES &amp; Accessories - high quality furniture fittings - high quality furniture fittings SISO A/S MILEPARKEN 11 DK - 2740 SKOVLUNDE (COPENHAGEN) DENMARK PHONE: (+45) 45 830 900 FAX: (+45) 45 830 444 - high quality furniture

789 views • 52 slides
Serving High Quality Meals in Summer Meal Programs June 2016 Importance of High Quality Meals

Serving High Quality Meals in Summer Meal Programs June 2016 Importance of High Quality Meals

Serving High Quality Meals in Summer Meal Programs June 2016 Importance of High Quality Meals Increase and retain participation Help children learn, grow, and stay healthy 2 What is a High Quality Meal? Appealing &amp; Appetizing Variety

897 views • 43 slides
PRESENTATION PRICES HIGH QUALITY PRINTS CARD MOUNTED PRINTS High quality photographic prints

PRESENTATION PRICES HIGH QUALITY PRINTS CARD MOUNTED PRINTS High quality photographic prints

PRESENTATION PRICES HIGH QUALITY PRINTS CARD MOUNTED PRINTS High quality photographic prints (not inkjets). Each one A high quality 9x6&quot; photographic print in a smart 11x8&quot; individually colour corrected and printed on premium black

442 views • 4 slides

More recommend