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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]
  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. https://doi.org/10.1088/1742-6596/717/1/012079.
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
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.
@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 = {2016},
month = {5}
}

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Works referenced in this record:

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journal, November 2015

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Reaching the quantum limit of sensitivity in electron spin resonance
journal, December 2015


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    Works referencing / citing this record:

    Irradiation of materials with short, intense ion pulses at NDCX-II
    journal, May 2017


    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