Report
Recent Experiments At Ndcx-II: Irradiation Of Materials Using Short, Intense Ion Beams
| العنوان: | Recent Experiments At Ndcx-II: Irradiation Of Materials Using Short, Intense Ion Beams |
|---|---|
| المؤلفون: | Seidl, P. A., Ji, Q., Persaud, A., Feinberg, E., Ludewigt, B., Silverman, M., Sulyman, A., Waldron, W. L., Schenkel, T., Barnard, J. J., Friedman, A., Grote, D. P., Gilson, E. P., Kaganovich, I. D., Stepanov, A., Treffert, F., Zimmer, M. |
| سنة النشر: | 2016 |
| المجموعة: | Physics (Other) |
| مصطلحات موضوعية: | Physics - Accelerator Physics |
| الوصف: | We present an overview of the performance of the Neutralized Drift Compression Experiment-II (NDCX-II) accelerator at Berkeley Lab, and summarize recent studies of material properties created with nanosecond and millimeter-scale ion beam pulses. The scientific topics being explored include the dynamics of ion induced damage in materials, materials synthesis far from equilibrium, warm dense matter and intense beam-plasma physics. We summarize the improved accelerator performance, diagnostics and results of beam-induced irradiation of thin samples of, e.g., tin and silicon. Bunches with over 3x10^10 ions, 1- mm radius, and 2-30 ns FWHM duration have been created. To achieve these short pulse durations and mm-scale focal spot radii, the 1.2 MeV He+ ion beam is neutralized in a drift compression section which removes the space charge defocusing effect during final compression and focusing. Quantitative comparison of detailed particle-in-cell simulations with the experiment play an important role in optimizing accelerator performance; these keep pace with the accelerator repetition rate of ~1/minute. Comment: Submitted to the 2016 North American Particle Accelerator Conference (NAPAC16). Proceedings to be published at http://jacow.org/ |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/1610.05253 |
| رقم الانضمام: | edsarx.1610.05253 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |