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Title: Short-pulse, compressed ion beams at the Neutralized Drift Compression Experiment

Abstract

We have commenced experiments with intense short pulses of ion beams on the Neutralized Drift Compression Experiment (NDCX-II) at Lawrence Berkeley National Laboratory, with 1-mm beam spot size within 2.5 ns full-width at half maximum. The ion kinetic energy is 1.2 MeV. To enable the short pulse duration and mm-scale focal spot radius, the beam is neutralized in a 1.5-meter-long drift compression section following the last accelerator cell. A short-focal-length solenoid focuses the beam in the presence of the volumetric plasma that is near the target. In the accelerator, the line-charge density increases due to the velocity ramp imparted on the beam bunch. The scientific topics to be explored are warm dense matter, the dynamics of radiation damage in materials, and intense beam and beam-plasma physics including select topics of relevance to the development of heavy-ion drivers for inertial fusion energy. Below the transition to melting, the short beam pulses offer an opportunity to study the multi-scale dynamics of radiation-induced damage in materials with pump-probe experiments, and to stabilize novel metastable phases of materials when short-pulse heating is followed by rapid quenching. First experiments used a lithium ion source; a new plasma-based helium ion source shows much greater charge deliveredmore » to the target.« less

Authors:
 [1];  [2]; ORCiD logo [3];  [2];  [3];  [2];  [1];  [3];  [1];  [1];  [1]
+ Show Author Affiliations
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Publication Date:
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES)
OSTI Identifier:
1335698
Alternate Identifier(s):
OSTI ID: 1415957
Grant/Contract Number:  
AC02-05CH11231; AC52-07NA27344; AC02 -09CH11466
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Physics. Conference Series
Additional Journal Information:
Journal Volume: 717; Conference: 9. International Conference on Inertial Fusion Sciences and Applications (IFSA), Seattle, WA (United States), 20-25 Sep 2015; Journal ID: ISSN 1742-6588
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Seidl, P. A., Barnard, J. J., Davidson, R. C., Friedman, A., Gilson, E. P., Grote, D., Ji, Q., Kaganovich, I. D., Persaud, A., Waldron, W. L., and Schenkel, T. Short-pulse, compressed ion beams at the Neutralized Drift Compression Experiment. United States: N. p., 2016. Web. doi:10.1088/1742-6596/717/1/012079.
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Seidl, P. A., Barnard, J. J., Davidson, R. C., Friedman, A., Gilson, E. P., Grote, D., Ji, Q., Kaganovich, I. D., Persaud, A., Waldron, W. L., & Schenkel, T. Short-pulse, compressed ion beams at the Neutralized Drift Compression Experiment. United States. https://doi.org/10.1088/1742-6596/717/1/012079
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Seidl, P. A., Barnard, J. J., Davidson, R. C., Friedman, A., Gilson, E. P., Grote, D., Ji, Q., Kaganovich, I. D., Persaud, A., Waldron, W. L., and Schenkel, T. Sun . "Short-pulse, compressed ion beams at the Neutralized Drift Compression Experiment". United States. https://doi.org/10.1088/1742-6596/717/1/012079. https://www.osti.gov/servlets/purl/1335698.
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@article{osti_1335698,
title = {Short-pulse, compressed ion beams at the Neutralized Drift Compression Experiment},
author = {Seidl, P. A. and Barnard, J. J. and Davidson, R. C. and Friedman, A. and Gilson, E. P. and Grote, D. and Ji, Q. and Kaganovich, I. D. and Persaud, A. and Waldron, W. L. and Schenkel, T.},
abstractNote = {We have commenced experiments with intense short pulses of ion beams on the Neutralized Drift Compression Experiment (NDCX-II) at Lawrence Berkeley National Laboratory, with 1-mm beam spot size within 2.5 ns full-width at half maximum. The ion kinetic energy is 1.2 MeV. To enable the short pulse duration and mm-scale focal spot radius, the beam is neutralized in a 1.5-meter-long drift compression section following the last accelerator cell. A short-focal-length solenoid focuses the beam in the presence of the volumetric plasma that is near the target. In the accelerator, the line-charge density increases due to the velocity ramp imparted on the beam bunch. The scientific topics to be explored are warm dense matter, the dynamics of radiation damage in materials, and intense beam and beam-plasma physics including select topics of relevance to the development of heavy-ion drivers for inertial fusion energy. Below the transition to melting, the short beam pulses offer an opportunity to study the multi-scale dynamics of radiation-induced damage in materials with pump-probe experiments, and to stabilize novel metastable phases of materials when short-pulse heating is followed by rapid quenching. First experiments used a lithium ion source; a new plasma-based helium ion source shows much greater charge delivered to the target.},
doi = {10.1088/1742-6596/717/1/012079},
journal = {Journal of Physics. Conference Series},
number = ,
volume = 717,
place = {United States},
year = {Sun May 01 00:00:00 EDT 2016},
month = {Sun May 01 00:00:00 EDT 2016}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1088/1742-6596/717/1/012079
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Works referenced in this record:

Moderate energy ions for high energy density physics experiments
journal, December 2004

Beam dynamics of the Neutralized Drift Compression Experiment-II, a novel pulse-compressing ion accelerator
journal, May 2010

  • Friedman, A.; Barnard, J. J.; Cohen, R. H.
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Towards pump–probe experiments of defect dynamics with short ion beam pulses
journal, November 2013

  • Schenkel, T.; Lidia, S. M.; Weis, C. D.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 315
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Accessing Defect Dynamics using Intense, Nanosecond Pulsed Ion Beams
journal, January 2015

Efficient Annealing of Radiation Damage Near Grain Boundaries via Interstitial Emission
journal, March 2010

Short intense ion pulses for materials and warm dense matter research
journal, November 2015

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  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 800
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Development and testing of a pulsed helium ion source for probing materials and warm dense matter studies
journal, February 2016

  • Ji, Q.; Seidl, P. A.; Waldron, W. L.
  • Review of Scientific Instruments, Vol. 87, Issue 2
  • DOI: 10.1063/1.4932569

Defocusing of an ion beam propagating in background plasma due to two-stream instability
journal, April 2015

  • Tokluoglu, Erinc; Kaganovich, Igor D.
  • Physics of Plasmas, Vol. 22, Issue 4
  • DOI: 10.1063/1.4917245

Enhanced collective focusing of intense neutralized ion beam pulses in the presence of weak solenoidal magnetic fields
journal, May 2012

  • Dorf, Mikhail A.; Davidson, Ronald C.; Kaganovich, Igor D.
  • Physics of Plasmas, Vol. 19, Issue 5
  • DOI: 10.1063/1.4722999

Local formation of nitrogen-vacancy centers in diamond by swift heavy ions
journal, December 2014

  • Schwartz, J.; Aloni, S.; Ogletree, D. F.
  • Journal of Applied Physics, Vol. 116, Issue 21
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Reaching the quantum limit of sensitivity in electron spin resonance
journal, December 2015

Towards highest peak intensities for ultra-short MeV-range ion bunches
journal, July 2015

  • Busold, Simon; Schumacher, Dennis; Brabetz, Christian
  • Scientific Reports, Vol. 5, Issue 1
  • DOI: 10.1038/srep12459
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    Works referencing / citing this record:

    Amplification due to two-stream instability of self-electric and magnetic fields of an ion beam propagating in background plasma
    journal, May 2018

    • Tokluoglu, Erinc K.; Kaganovich, Igor D.; Carlsson, Johan A.
    • Physics of Plasmas, Vol. 25, Issue 5
    • DOI: 10.1063/1.5038878
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