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-- RamonaValenzuelaPerez - 2012-06-21

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Proton Detector: Charged Fusion Products Diagnostic

Please note that though Florida International Univeristy (FIU) is collaborating with the Princeton Plasma Physics Laboratory (PPPL) and the Culham Centre for Fusion Energy (CCFE), this TWiki page is maintained by FIU collaborators (FEPP) and the page is hosted by FIU. Please see the CCFE Information section for the address of the Wiki page maintained and hosted by the CCFE.

Proton Detector (PD) installed in MAST

The Proton Detector is a charged fusion products diagnostic developed to study MHD instabilities. Using similar techniques that were implemented to directly measure these fast ions in conventional tokamaks, the PD is the first diagnostic to directly measure 3MeV protons from deuterium-deuterium (DD) fusion reactions in a spherical tokamak. Advantages to this system design include the size (rough estimate: smaller than a 2L soda bottle), cost, and energy resolution.

Most of the PD was designed, built, and tested at FIU. Testing also took place at the PPPL and CCFE. It was then installed in the Mega Amp Spherical Tokamak (MAST) to detect charged products from beam-plasma fusion reactions during neutral beam injection. The 4 channel silicon surface barrier detector array was mounted to a mechanical probe arm so that the diagnostic could be inserted into the vessel at different radial positions to probe different regions in the plasma. Analogue voltage signals, directly proportional to the energy deposited by the energetic ions, were continuously digitized at 60MHz during plasma discharges. Proton and triton pulses in these signals were identified to create energy spectra and proton production rates (up to 300kHz).

We are currently in the process of data analysis. We are developing techniques to fit our experimental data to create proton emission profiles of the plasma during sawtooth, fishbone, and ELM instabilities. Future work will also include a combined analysis with the MAST Neutron Camera data. Please see the FEPP group page for our research group's contact information.

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FEPP and Collaborator Highlights

Some of our former FEPP students were mentioned in the Princeton Plasma Physics Laboratory Weekly Highlights Newsletter (NSTX section)

One of our former FEPP undergraduate students, Pierre Avila, who joined the Physics graduate program at the University of Houston - Clear Lake was featured in the American Physical Society Bridge Program

Summer 2015, a FEPP graduate student will graduate with a Ph.D. in Physics

  • Ramona Perez will join Intel as an RET Design Engineer
April 2015, a FEPP undergraduate student graduated with a B.S. in Physics
  • Adrianna Angulo joined the Applied Physics graduate program at the University of Michigan
Our collaborator Douglass Darrow was a speaker for an FP&L Distinguished Nuclear Lecture Series at Florida International University on March 20, 2015

Our figure has made the cover of the HTPD Conference Proceedings:

cover1_scaled.jpgcover2_scaled.jpg

Our collaborator Marco Cecconnello was the first author on a paper in Plasma Phys. Control. Fusion:

  • M. Cecconello, O.M. Jones, W.U. Boeglin, R.V. Perez, D.S. Darrow, I. Klimek, S.E. Sharapov, M. Fitzgerald, K.G. McClements, D.L. Keeling, S.Y. Allan, C.A. Michael, R.J. Akers, N.J. Conway, R. Scannell, M. Turnyanskiy, G. Ericsson & the MAST team. Energetic ion behaviour in MAST. PPCF-100336.R1, Plasma Phys. Control. Fusion 57 (2015) 014006 doi:10.1088/0741-3335/57/1/014006

Between April and August of 2014, FEPP undergraduate students graduated with a B.S. in Physics

  • Pierre Avila joined the Physics graduate program at the University of Houston - Clear Lake
  • Omar Leon joined the Applied Physics graduate program at the University of Michigan
  • Carlos Lopez joined Excet, Inc. Research & Development Division as Engineer III
  • Doug Tuckler joined the Physics graduate program at the University of Cincinnati
Our collaborator Scott Allan is featured during a synopis of a CCFE tour: http://rooksheathscience.wordpress.com/2014/01/31/visit-to-culham-centre-for-fusion-energy-2/

Our undergraduate student researchers speak about their summer research experience at the CCFE during the PD installation and data collection: http://news.fiu.edu/2013/09/mcnair-students-study-protons-hidden-language-of-train-conductors-in-uk/66638

Presentations after MAST Data Collection

High-Temperature Plasma Diagnostics (HTPD) 2014

PPPL NSTX-U Collaborator Research Plan Meeting FIU Physics Department Graduate Research Competition
  • April 21st, 2014
  • Miami, Florida
  • Presenter: Ramona V Perez (1st place)
FIU Graduate Scholarly Forum
  • March 31st, 2014
  • Miami, Florida
  • Presenter: Ramona V Perez (3rd place)
PPPL NSTX-U Physics Meeting 55th Annual Meeting of the Division of Plasma Physics (DPP) MAST Friday Physics Seminar
  • Friday, September 13th, 2013
  • Culham Centre for Fusion Energy, Culham, England
  • Presentation: MAST_presentation_091313.pdf
  • Presenter: Ramona V Perez

Publications

Energetic ion behaviour in MAST

  • First author: Collaborator Marco Cecconnello, Invited Paper from the EPS Conference 2014
  • Plasma Phys. Control. Fusion 57 (2015) 014006

    • Investigating fusion plasma instabilities in the Mega Amp Spherical Tokamak using mega electron volt proton emissions

  • First author: FEPP Group Member Ramona V Perez, Invited Paper from the HTPD Conference 2014
  • Rev. Sci. Instrum. 85 , 11D701 (2014); http://dx.doi.org/10.1063/1.4889736

    • Concept of a charged fusion product diagnostic for NSTX

  • First author: FEPP Group Member Werner Boeglin, Contributed Paper from the HTPD Conference 2010
  • Rev. Sci. Instrum. 81 , 10D301 (2010); doi: 10.1063/1.3464262

    • FSU Superconducting Linear Accelerator Laboratory Data Collection

    Dates

    • Travel & Installation: January 5th & January 6th 2015
    • Data collection: January 6th - 8th 2015
    • Decommission: January 8th & January 9th 2015
    • Onsite collaborators (at FSU SLAL)
      • January 5th - January 9th: Ramona Perez (FIU), Alex Netepenko (FIU), Ingo Wiedenhoever (FSU), Lagy Baby (FSU),
      • January 6th - January 9th: Adrianna Angulo (FIU)
      • January 6th - January 8th: Werner Boeglin (FIU)

    MAST Data Analysis Log and Detector Orientations

    Please click: DataLog

    MAST Data Collection

    Dates

    • Parasitic Data collection: August 15th - August 16th & September 2013
    • Dedicated Data collection: August 19th - August 23rd 2013
    • Onsite collaborators (at CCFE)
      • July 22nd - September 13th: Ramona Perez (FIU)
      • August 5th - August 16th: Werner Boeglin (FIU), Adrianna Angulo (FIU), Carlos Lopez (FIU), Omar Leon (FIU), Pierre Avila (FIU)
      • August 12th- August 23rd: Doug Darrow (PPPL)
    Dedicated Shots Data Collection
    • Monday August 19th 2013
    • Tuesday August 20th 2013
    • Wednesday August 21st 2013
    • Thursday August 22nd 2013
    Parasitic/ Piggybacking Data Collection
    • Thursday August 15th 2013
    • Friday August 16th 2013
    • Friday August 23rd 2013
    • Wednesday September 4th 2013
    • Friday September 6th 2013
    • Monday September 9th 2013
    • Tuesday September 10th 2013
    • Wednesday September 11th 2013
    • Thursday September 12th 2013
    Information for sending equipment back to FIU after data collection:

    MAST Installation

    Dates

    • FP-001 & FP-005 Planning Meeting: August 5th, August 15th 2013
    • Diagnostic installation: July 22nd - August 12th 2013
    • Proton Detector Completely Installed and Operational: August 15th 2013
    PD_INSTALLATION_DETAILS_081613_Ramona.pdf

    MAST Electrical Design Review

    Final Cable Block Diagram

    • August 2013
    • Draft for Final Cable Block Diagram Drawn by: Ramona Perez
    • Final Cable Block Diagram (below) Drawn by: Andrew Page (CCFE)
    • M11505005.pdf

    Electrical Design Review Materials

    Date

    • Wednesday June 19th, 2013
    • 9:00 AM FL, 14:00 Culham
    Attendees
    • FIU: Adrianna Angulo, Werner Boeglin, Omar Leon, Ramona Perez
    • MAST: Scott Y Allan, Richard Martin, Ken McClements, Paul Stevenson, Nigel Thomas-Davies
    • PPPL: Doug Darrow
    EDR Materials Supporting Documents (for reference if needed)

    MAST Noise Testing

    Dates

    • Onsite noise testing: March 2013
    • Remote noise testing: March - May 2013
    Collaborators travelling to MAST
    • Ramona Perez: March 11th - March 24th 2013
    • Werner Boeglin: March 11th - March 15th 2013
    • Doug Darrow: March 11th - March 20th 2013
    Instructions to run DAQ Program (if need be) Information for sending equipment back to FIU after remote testing Radiation source Electrical Design
    • cable_block_diagram.pdf
    • All cable lengths used will be the same for the July data collection
    • MAST reciprocating probe cable lengths were simulated for noise testing
    Mechanical Design
    • Changes to probe head orientation angles made during noise testing

    March 19th, 2013 Noise Testing Group Meeting

    MAST Prototype

    Installation: January 2013

    Comments:

    • Prototype type dimensions fit into RP access cube (reduction in probe head diameter requested for greater ease of installation)
    • Our prototype RP connector may have become distorted during the welding of the connector to the prototype shell (this issue was fixed at the CCFE)
    • A dummy RP shaft end was created and sent to FIU to test the fit of the RP connector before bringing the diagnostic for the summer data collection
    • Vacuum vent hole had to be drilled in top of prototype to bake for RP installation (at the CCFE)
    Machine Drawings:

    MAST Mechanical Design Review

    As-Built Mechanical Design

    Mechanical Design Review Materials

    Date

    • September 9th, 2012
    • Remote from FIU to the CCFE
    Presentation Materials Drawings Supporting Documents (for reference if needed)

    Preliminary Mechanical Design Reviews

    MAST Preliminary Mechanical Design Review Materials

    Date

    • June 26th, 2012
    Materials

    PPPL Preliminary Mechanical Design Review Materials

    Date

    • June 19th, 2012
    Materials

    FIU Experimental Plasma Physics (FEPP) Group

  • Collaborator Invited Paper from the EPS Conference 2014
  • Plasma Phys. Control. Fusion 57 (2015) 014006
  • FEPP Group Member Invited Paper from the HTPD Conference 2014
    • FEPP Group Member Contributed Paper from the HTPD Conference 2010
      • Rev. Sci. Instrum. 81, 10D301 (2010); doi: 10.1063/1.3464262

    CCFE Information for FIU Collaborators

    If you are not renting a car and need to plan ahead regarding working late hours at the CCFE, see CCFE Useful Travel Information for Visiting Collaborators

    Find the country code for calling CCFE colleagues, links for troubleshooting remote access, and information on obtaining collaborator data from XPAD. See CCFE Useful Links and Information

    FIU Funding Acknowledgements

    • This material is based upon work supported by the U.S. Department of Energy contract numbers DESC0001157 and DEAC0209CH11466, Florida International University, the FIU GPSC Research and Conference Travel Grants, the FIU Ronald E. McNair Post-Baccalaureate Achievement Program, the FIU Physics Department, the FIU College of Arts & Sciences, and the American Physical Society Forum on Graduate Student Affairs.

    Back to FEPP

    -- RamonaValenzuelaPerez - 2013-09-25

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