University of Wisconsin -- Madison Fusion Technology Institute Inertial Electrostatic Confinement...
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University of Wisconsin -- Madison Fusion Technology Institute Inertial Electrostatic Confinement Group Presented by Richard Bonomo October 2009 US-Japan IEC Workshop 2009 1 Richard Bonomo 1* , Eric Alderson 1 , Gabriel Becerra 1 , David Boris 2 , Logan Campbell 1 , David Donovan 1 , Brian Egle 1 , Gil Emmert 1 , Lauren Garrison 1 , Gerald Kulcinski 1 , Matthew Michalak 1 , John Santarius 1 , Craig Schuff 1 , Sam Zenobia 1 1,2, * see abstract for affiliations and contact information UW-Madison IEC Laboratory continuing capacity upgrades and infrastructure upgrades U.S. Japan 2009 IEC Workshop Madison, WI, USA
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Transcript of University of Wisconsin -- Madison Fusion Technology Institute Inertial Electrostatic Confinement...
University of Wisconsin -- Madison
Fusion Technology InstituteInertial Electrostatic Confinement Group
Presented by Richard Bonomo October 2009 US-Japan IEC Workshop 2009
1
Richard Bonomo1*, Eric Alderson1, Gabriel Becerra1, David Boris2, Logan Campbell1, David Donovan1, Brian Egle1, Gil Emmert1, Lauren Garrison1, Gerald Kulcinski1, Matthew Michalak1, John
Santarius1, Craig Schuff1, Sam Zenobia1
1,2, * see abstract for affiliations and contact information
UW-Madison IEC Laboratorycontinuing capacity upgrades and infrastructure upgrades
U.S. Japan 2009 IEC Workshop
Madison, WI, USA
University of Wisconsin -- Madison
Fusion Technology InstituteInertial Electrostatic Confinement Group
Presented by Richard Bonomo October 2009 US-Japan IEC Workshop 2009
2
Presentation Outline1. Current Status2. Laboratory configuration and basic
operation3. Power Supply Installation4. Other Infrastructure Improvements
_____________________________
Prof. Gerald Kulcinski provided an overview of experiments in progress this morning.
University of Wisconsin -- Madison
Fusion Technology InstituteInertial Electrostatic Confinement Group
Presented by Richard Bonomo October 2009 US-Japan IEC Workshop 2009
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Current Status of Laboratory
• Personnel:– 7 graduate students– 1 staff engineer/researcher/laboratory manager– 4 faculty
University of Wisconsin -- Madison
Fusion Technology InstituteInertial Electrostatic Confinement Group
Presented by Richard Bonomo October 2009 US-Japan IEC Workshop 2009
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Current Status of Laboratory(as of October 2009)
• Apparatus– 3 operating IEC devices– 1 materials testing device (newly installed)– 300 kVDC power supply (newly installed)– 2-channel low-ripple filament-heating-and-bias
power supply (newly installed)
University of Wisconsin -- Madison
Fusion Technology InstituteInertial Electrostatic Confinement Group
Presented by Richard Bonomo October 2009 US-Japan IEC Workshop 2009
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Laboratory LayoutFTI Primary Laboratory
B151 ERBTotal floor area (incl. brick wall) 730 sq ft / 68 sq m
MITE-E
14 MeV-n-rated wallsExperiment cell (12 X 12 ft) / (3.7 X 3.7 m)
University of Wisconsin -- Madison
Fusion Technology InstituteInertial Electrostatic Confinement Group
Presented by Richard Bonomo October 2009 US-Japan IEC Workshop 2009
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Laboratory ApparatusHELIOS HOMER 3HeCTRE / SIGFE MITE-E
University of Wisconsin -- Madison
Fusion Technology InstituteInertial Electrostatic Confinement Group
Presented by Richard Bonomo October 2009 US-Japan IEC Workshop 2009
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RGA
High-Voltage Feedthrough
Proton Detector
Neutron Detector
(Ground)
Spectrometer
D2 and HeGas FlowControllers
D2D2
D2
D2
D2
D2
D2
D2
D2
D2 D2
D2
D2
D2
D2
D2
D2
D2 D2
D2
D2
D2
D2
D2
D2
D2
D2
D2
D2
D2
D2
D2
D2 D2
D2
D2
D2
D2
D2
D2
D3+
D2
D1+
D3+
D+
D2+
D3+
D3+
D+
D2
D2
D2
D2
D2
D2 D2
D2D2
D2
D2D2D2
D3+
D2
D2+
D3+
D+
D3+
D3+
D+
D3+
Filaments
65 cm
91 cmCathode
(Negative 40 to 120 kV)
Anode(Ground Potential)
Source Region
Deuterium Flowed into Chamber
Filaments Ionize Deuterium Gas
Voltage Applied to Cathode
University of Wisconsin -- Madison
Fusion Technology InstituteInertial Electrostatic Confinement Group
Presented by Richard Bonomo October 2009 US-Japan IEC Workshop 2009
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Data Flow (typical)
A to D LabviewAnalog Data
Display
Digital recordExperiment
Particle (n, p)detection data
Temporal binningand counting
Display
Manual keyboard entryInto MySQL database
Data are analyzed using a number of software packages available in the laboratory and at the college computing facility
University of Wisconsin -- Madison
Fusion Technology InstituteInertial Electrostatic Confinement Group
Presented by Richard Bonomo October 2009 US-Japan IEC Workshop 2009
Infrastructure Improvement
• Completed since last yearInstallation of the new negative-polarity
high-voltage power supply, 0-300 kVDC, 0-200 mA purchased from Phoenix Nuclear Laboratories (Piefer, earlier today)
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University of Wisconsin -- Madison
Fusion Technology InstituteInertial Electrostatic Confinement Group
Presented by Richard Bonomo October 2009 US-Japan IEC Workshop 2009
10
Motivation for Power Supply Upgrade• Improved access to 3He-3He Fusion Regime
Source: J. F. Santarius
~55%
~500%
Spherical Velocity Distribution, Maximum Charge States
University of Wisconsin -- Madison
Fusion Technology InstituteInertial Electrostatic Confinement Group
Presented by Richard Bonomo October 2009 US-Japan IEC Workshop 2009
11
Motivation for Power Supply Upgrade• Neutron flux appears to be monotonically increasing with voltage
(greater voltage ==> more neutrons)
Graph courtesy of David Donovan
University of Wisconsin -- Madison
Fusion Technology InstituteInertial Electrostatic Confinement Group
Presented by Richard Bonomo October 2009 US-Japan IEC Workshop 2009
12
Motivation for Power Supply Upgrade• Neutron flux appears to be monotonically increasing with currrent
(greater current ==> more neutrons)
Graph courtesy of David Donovan
University of Wisconsin -- Madison
Fusion Technology InstituteInertial Electrostatic Confinement Group
Presented by Richard Bonomo October 2009 US-Japan IEC Workshop 2009
13
University of Wisconsin -- Madison
Fusion Technology InstituteInertial Electrostatic Confinement Group
Presented by Richard Bonomo October 2009 US-Japan IEC Workshop 2009
Infrastructure Improvement
• Completed since last yearFilament heating and bias power supply 2 independent power supplies, each having:
0-130 VDC for heating, up to 1 kW 0-300 VDC for bias, up to ~10 A (3 kW) Ripple less than 1 Vp-p at full output
(vs. 10 Vp-p for old supply)
Four output ports, 3 of which are individually trimmed via a rheostat
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University of Wisconsin -- Madison
Fusion Technology InstituteInertial Electrostatic Confinement Group
Presented by Richard Bonomo October 2009 US-Japan IEC Workshop 2009
Infrastructure Improvement• Completed since last yearFilament heating and bias power supply
Extensively instrumented, and equipped for remote monitoring of: Filament Voltage Bias Voltage Heating and Bias Currents for all eight output ports
Monitoring circuitry interfaced to LabView
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University of Wisconsin -- Madison
Fusion Technology InstituteInertial Electrostatic Confinement Group
Presented by Richard Bonomo October 2009 US-Japan IEC Workshop 2009
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Infrastructure Improvement
• Completed since last yearDesign and construction of additional vacuum chamber
for materials testing (Zenobia, Tues. PM) Installation of twelve 0-15kVDC power supplies in
support of SIGFE (replaces 2 adapted capacitor-charging power supplies) (Egle, Mon. PM)
University of Wisconsin -- Madison
Fusion Technology InstituteInertial Electrostatic Confinement Group
Presented by Richard Bonomo October 2009 US-Japan IEC Workshop 2009
17
Infrastructure Improvement
• Completed since last yearDesign and construction of new bias-pulsing power
supply for HEU detection experiments(awaiting first “live” trials)
More rapid turn-on and turn-off of filament bias(< 10 µs ?)
Compact design: reduces number of “boxes” required
Repackaging of high-voltage capacitors needed to support cathode voltage during pulse operation
University of Wisconsin -- Madison
Fusion Technology InstituteInertial Electrostatic Confinement Group
Presented by Richard Bonomo October 2009 US-Japan IEC Workshop 2009
18
Infrastructure Improvement• Completed since last yearAdaptation of cable switching system to allow flexibility
during the transition to higher-voltage operation (differing cable sizes)
Installation of a higher-frame-rate (up to 200 FPS) video camera with X-Ray shielding
Development and deploying of Time-of-flight diagnostic (Donovan, Tues. AM)
Conversion of database “back-end” from Access (MS JET) to open-source MySQL
University of Wisconsin -- Madison
Fusion Technology InstituteInertial Electrostatic Confinement Group
Presented by Richard Bonomo October 2009 US-Japan IEC Workshop 2009
19
Infrastructure Improvements• Anticipated in the near future (postponed from last year)
– Design and installation of glass-metal seal on HELIOS helicon ion source
University of Wisconsin -- Madison
Fusion Technology InstituteInertial Electrostatic Confinement Group
Presented by Richard Bonomo October 2009 US-Japan IEC Workshop 2009
20
Infrastructure Improvements
• Anticipated in the near future (postponed from last year)– Re-configuring of experiment grounds and power
connections
University of Wisconsin -- Madison
Fusion Technology InstituteInertial Electrostatic Confinement Group
Presented by Richard Bonomo October 2009 US-Japan IEC Workshop 2009
21
Infrastructure Improvements
• Anticipated in the near future (postponed from last year)– Fabrication of new metal-free HV
feed-throughs, and installation on HOMER and HELIOS.
University of Wisconsin -- Madison
Fusion Technology InstituteInertial Electrostatic Confinement Group
Presented by Richard Bonomo October 2009 US-Japan IEC Workshop 2009
22
Infrastructure Improvements• Anticipated in the more distant future:
– Design and installation of a 3He recovery system.
Motivation:
University of Wisconsin -- Madison
Fusion Technology InstituteInertial Electrostatic Confinement Group
Presented by Richard Bonomo October 2009 US-Japan IEC Workshop 2009
23
Concluding Remarks
• IEC Laboratory staff continues to improve experimental apparatus, infrastructure and methodologies, and to design innovative experiments.
• The laboratory should be able to expand the operating regime (cathode current and voltage) in a very substantial way in the course of the next two years.
University of Wisconsin -- Madison
Fusion Technology InstituteInertial Electrostatic Confinement Group
Presented by Richard Bonomo October 2009 US-Japan IEC Workshop 2009
Questions?
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