Design Considerations for Beam Port Insulator Rings

Slides:

Advertisements

Similar presentations

Plasma Window Options and Opportunities for Inertial Fusion Applications Leslie Bromberg Ady Herskovitch* MIT Plasma Science and Fusion Center ARIES meeting.

Advertisements

The scaling of LWFA in the ultra-relativistic blowout regime: Generation of Gev to TeV monoenergetic electron beams W.Lu, M.Tzoufras, F.S.Tsung, C. Joshi,

September 24-25, 2003 HAPL meeting, UW, Madison 1 Armor Configuration & Thermal Analysis 1.Parametric analysis in support of system studies 2.Preliminary.

1 Introduction to Plasma Immersion Ion Implantation Technologies Emmanuel Wirth.

Ch 25.5 – Potential due to Continuous Distribution We have an expression for the E-potential of a point charge. Now, we want to find the E-potential due.

Systems Analysis for Modular versus Multi-beam HIF Drivers * Wayne Meier – LLNL Grant Logan – LBNL 15th International Symposium on Heavy Ion Inertial Fusion.

Update on Self Pinch Transport of Heavy Ion Beams for Chamber Transport D. V. Rose, D. R. Welch, Mission Research Corp. S. S. Yu, Lawrence Berkeley National.

DAH, UW-FTI ARIES-IFE, April 2002, 1 Results from parametric studies of thin liquid wall IFE chambers D. A. Haynes, Jr. Fusion Technology Institute University.

Physics of fusion power Lecture 11: Diagnostics / heating.

Beamline Design Issues D. R. Welch and D. V. Rose Mission Research Corporation W. M. Sharp and S. S. Yu Lawrence Berkeley National Laboratory Presented.

Wayne R. Meier Lawrence Livermore National Lab Heavy Ion Fusion Modeling Update - Spot Size Model Changes* ARIES Meeting April 22-23, 2002 * This work.

Plasma Window Performance Leslie Bromberg Katie Maurer Ady Herskovitch* MIT Plasma Science and Fusion Center ARIES meeting Madison, WI April 23, 2002 *Brookhaven.

Update on Self-Pinched Transport Simulations D. V. Rose and D. R. Welch Mission Research Corp. General Atomics, 7/1/02.

DAH, RRP, UW - FTI ARIES-IFE, January 2002, 1 Thin liquid Pb wall protection for IFE chambers D. A. Haynes, Jr. and R. R. Peterson Fusion Technology Institute.

Vapor Conditions Including Ionization State in Thick Liquid Wall IFE Reactors Presented by D. A. Haynes, Jr. for the staff of the Fusion Technology Institute.

Wayne R. Meier Lawrence Livermore National Lab Heavy Ion Fusion Modeling Update* ARIES e-Meeting October 17, 2001 * This work was performed under the auspices.

The Heavy Ion Fusion Virtual National Laboratory UC Berkeley Christophe S. Debonnel 1,2 (1) Thermal Hydraulics Laboratory Department of Nuclear Engineering.

The Heavy Ion Fusion Virtual National Laboratory UC Berkeley C.S. Debonnel 1,2, S.S. Yu 2, P.F. Peterson 1 (1) Thermal Hydraulics Laboratory Department.

Advanced Energy Technology Group Mechanisms of Aerosol Generation in Liquid-Protected IFE Chambers M. S. Tillack, A. R. Raffray.

Ionization. Measuring Ions A beam of charged particles will ionize gas. –Particle energy E –Chamber area A An applied field will cause ions and electrons.

April 4-5, 2002 A. R. Raffray, et al., Chamber Clearing Code Development 1 Chamber Dynamics and Clearing Code Development Effort A. R. Raffray, F. Najmabadi,

Impact of Liquid Wall on Fusion Systems Farrokh Najmabadi University of California, San Diego NRC Fusion Science Assessment Committee November 17, 1999.

June7-8, 2001 A. R. Raffray, et al., Completion of Assessment of Dry Chamber Wall Option Without Protective Gas, and Initial Planning Activity for Assessment.

Simulations of Neutralized Drift Compression D. R. Welch, D. V. Rose Mission Research Corporation Albuquerque, NM S. S. Yu Lawrence Berkeley National.

The Heavy Ion Fusion Virtual National Laboratory Comparison of final focus magnetic systems for the Assisted Pinched Transport and the RPD-2002 J. Barnard,

Chamber Dynamic Response Modeling Zoran Dragojlovic.

Beam Interaction with Chamber Aerosols D. R. Welch and D. V. Rose, MRC C. L. Olson, SNL S. S. Yu, LBNL October 2-4, 2002 Presented at the ARIES Project.

Propagation of HI Beams in Chamber Metal Vapor Atmosphere C. Olson, Sandia National Laboratories D. Welch, D. Rose, B. Oliver, T. Genoni, and R. Clark,

The Heavy Ion Fusion Virtual National Laboratory ARIES-IFE Meeting Atlanta, Georgia September 4, 2003 “Modular Solenoid with Assisted Pinch” by S. Yu,

May 5-6, 2003/ARR 1 Town Meeting on Liquid Wall Chamber Dynamics ARIES Town Meeting Hilton Garden Inn, Livermore, CA May 5-6, 2003 Background and Goals.

Modeling of Assisted and Self- Pinch Transport D. V. Rose and D. R. Welch Mission Research Corporation C. L. Olson Sandia National Laboratories S. S. Yu.

October 24, Remaining Action Items on Dry Chamber Wall 2. “Overlap” Design Regions 3. Scoping Analysis of Sacrificial Wall A. R. Raffray, J.

ARIES-IFE Assessment of Operational Windows for IFE Power Plants Farrokh Najmabadi and the ARIES Team UC San Diego 16 th ANS Topical Meeting on the Technology.

The Heavy Ion Fusion Virtual National Laboratory Towards An Analytic Model for Beam Spot Size in Ballistic Neutralized Transport Simon Yu, J. Barnard,

Progress Report on Chamber Dynamics and Clearing Farrokh Najmabadi, Rene Raffray, Mark S. Tillack, John Pulsifer, Zoran Dragovlovic (UCSD) Ahmed Hassanein.

ARIES-IFE: An Integrated Assessment of Chamber Concepts for IFE Power Plants Mark Tillack for the ARIES Team 19th IEEE/NPSS SOFE January 22-25, 2002 Atlantic.

Coupling of APT Transported Ion beam to Hybrid Target D. R. Welch and D. V. Rose Mission Research Corporation C. L. Olson Sandia National Laboratories.

January 8-10, 2003/ARR 1 1. Pre-Shot Aerosol Parameteric Design Window for Thin Liquid Wall 2. Scoping Liquid Wall Mechanical Response to Thermal Shocks.

Aug. 8-9, 2006 HAPL meeting, GA 1 Advanced Chamber Concept with Magnetic Intervention: - Ion Dump Issues - Status of Blanket Study A. René Raffray UCSD.

Wayne R. Meier Lawrence Livermore National Lab Per Peterson UC Berkeley Updated Heavy Ion Driver Parameters for Snowmass Point Design ARIES Meeting July.

Design Considerations for Thin Liquid Film Wall Protection Systems S.I. Abdel-Khalik and M.Yoda Georgia Institute of Technology ARIES Project Meeting,

Status of Operational Windows for HIF Chamber Transport Modes D. V. Rose, D. R. Welch, C. L. Olson, S. Neff, and S. S. Yu ARIES Project Meeting January.

The Heavy Ion Fusion Virtual National Laboratory UC Berkeley Christophe S. Debonnel 1,2 (1) Thermal Hydraulics Laboratory Department of Nuclear Engineering.

RRP:10/17/01Aries IFE 1 Liquid Wall Chamber Dynamics Aries Electronic Workshop October 17, 2001 Robert R. Peterson Fusion Technology Institute University.

Diversion of Plasma in Beam Port with a Vertical Magnetic Field D. R. Welch, D. V. Rose, S. S. Yu and W. Sharp Presented at the ARIES Project Meeting April.

STREAMER INITIATION AND PROPAGATION IN WATER WITH THE ASSISTANCE OF BUBBLES AND ELECTRIC FIELD INITIATED RAREFACTION Wei Tian a) and Mark J. Kushner b)

Distribution of Advanced Design Research FY02 FY03 (Current) ARIES (IFE & MFE) System Studies1,9661,939 Socio-economic Studies UCSD/UW/RPI 1,189.

ARIES-IFE Study L. M. Waganer, June 7, 2000 Page 1 Considerations of HI Beam and Vacuum System Arrangement L. Waganer The Boeing Company 7 June 2001 ARIES.

HAPL WORKSHOP Chamber Gas Density Requirements for Ion Stopping Presented by D. A. Haynes, Jr. for the staff of the Fusion Technology Institute.

TRIGGERING EXCIMER LASERS BY PHOTOIONIZATION FROM A CORONA DISCHARGE* Zhongmin Xiong and Mark J. Kushner University of Michigan Ann Arbor, MI USA.

The Heavy Ion Fusion Virtual National Laboratory Analytical and Numerical Studies of Ion Beam Plasma Interaction for Heavy Ion Driven Inertial Fusion Igor.

The Heavy Ion Fusion Virtual National Laboratory UC Berkeley Christophe S. Debonnel Thermal Hydraulics Laboratory Department of Nuclear Engineering University.

The Heavy Ion Fusion Virtual National Laboratory Pulsed Normal Quadrupoles for a Heavy Ion Fusion Driver Final Focus Section D. Shuman, S. S. Yu, LBNL.

ARIES Workshop Dry Wall Response to the HIB (close-coupled) IFE target Presented by D. A. Haynes, Jr. for the staff of the Fusion Technology Institute.

Aerosol Limits for Target Tracking Ronald Petzoldt ARIES IFE Meeting, Madison, WI April 22-23, 2002.

 Plasma backlight generates light using pulsed dielectric barrier discharge  Applied voltage excites xenon atoms in the gas chamber and enables the formation.

-Plasma can be produced when a laser ionizes gas molecules in a medium -Normally, ordinary gases are transparent to electromagnetic radiation. Why then.

The Heavy Ion Fusion Virtual National Laboratory Neutralized Transport Experiment (NTX) P. K. Roy, S. S. Yu, S. Eylon, E. Henestroza, A. Anders, F. M.

Slide 1 The Heavy Ion Fusion Science Virtual National Laboratory Why heavy ions? Target requires: 3.5 – 6 MJ in ~ 10 ns  500 TW Range ~ 0.02 – 0.20 g/cm.

The Neutronics of Heavy Ion Fusion Chambers Jeff Latkowski and Susana Reyes 15 th Heavy Ion Inertial Fusion Symposium Princeton, NJ June 9, 2004 Work performed.

Target threat spectra Gregory Moses and John Santarius with Thad Heltemes, Milad Fatenejad, Matt Terry and Jiankui Yuan Fusion Technology Institute University.

Simulation of Heavy Ion Beam Propagation D. R. Welch and D. V. Rose Mission Research Corporation, Albuquerque NM C. L. Olson Sandia National Laboratories.

Ion Mitigation for Laser IFE Optics Ryan Abbott, Jeff Latkowski, Rob Schmitt HAPL Program Workshop Atlanta, Georgia, February 5, 2004 This work was performed.

SPES Target Group Data…… INFN-CISAS-CNR collaboration The Ablation Ion Source for refractory metal ion beams A preliminary design.

Heavy Ion Fusion Modeling Update*

IFE Wetted-Wall Chamber Engineering “Preliminary Considerations”

University of California, San Diego

University of California, San Diego

Action Items from ARIES IFE Meeting, UW, April 22-23, 2002 (DRAFT)

Presentation transcript:

Design Considerations for Beam Port Insulator Rings Simon Yu Lawrence Berkeley National Laboratory ARIES Meeting October 24, 2001

What is the Propagation Window for Channel Assisted Pinch? Beam Dynamics (LSP) (10 ns timescale) Channel Formation (10 s timescale) Breakdown Management is a key component of channel formation: - breakdown in the channel when voltage is applied - no breakdown to the chamber walls Beam port insulator rings are designed to inhibit breakdown to chamber walls 1

Channel transport could ease chamber focus requirements and reduce driver costs Laser Z-Pinch Stable? ~ 5 Torr Xe ~50 kA Return path/ channel interaction ? 2 Breakdown to Walls?

Z-Pinch Formation is a 3-step process

Gas Breakdown Management The key parameter for gas breakdown is E/p - (E=electric field, p=gas density) For Xenon, breakdown occurs at Design goal: (1) create reduced density hole (nch) in channel such that (E/p)ch > (E/p)Xe (2) Maintain low E/p everywhere else in chamber (where gas density is n0) (E/p)0 < (E/p)Xe Necessary condition: where Rchamber ≈ length of channel ≈ chamber radius and Rport ≈ radius of port insulator (E/p)Xe = 60 V/cm/torr nchRchamber < n0Rport 4

From breakdown requirement, port size given by ≈ Rport > Rchamber. PORT DESIGN From breakdown requirement, port size given by ≈ Rport > Rchamber. We have done some hydrodynamics calculations to determine (nch/no) < 0.1. (Black body radiation model) We need a port design that is acceptable electrically and structurally Two port designs were constructed which were compatible with thick liquid walls. We have constructed another port design which MAY be more compatible with dry wall and wet wall concepts. 5

PREPULSE phase - HYDRODYNAMIC EXPANSION Gas Density Gas Temperature t=0 T=60s 6

nch/n0 7

nch/n0 (Initial temperature /300º K) 8

Beam Energy Loss Places Constraint on Maximum Density in Channel Example: 4GeV Pb ions going through 4 m of 0.5 Torr Xe gas will lose 9 % of its energy. In general Where Zg - atomic number of gas Zi - effective charge state of stripped ion  - speed of ion / speed of light 9

Fusion Chamber for Channel Assisted Pinch Current-carrying Channel Target Return current channel 10

11

12

New Insulator Geometry Chamber wall (ground potential) Xe filled chamber Metal wall (high potential) Channel axis 13

Electric Field Profile (Poisson Calculations) 14

Continued studies of channel hydrodynamics to determine nch/n0 Near Term Objectives Continued studies of channel hydrodynamics to determine nch/n0 Continued electrical optimization of insulator (Poisson) Structural integrity and protection of insulator (Raffray et al) 15