2014 Fiscal Year Research-status Report
A compact coherent x-ray source development using relativistic high-order harmonics from laser-gas jet interactions
| Project/Area Number |
25390135
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| Research Institution | Japan Atomic Energy Agency |
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Principal Investigator |
ESIRKEPOV Timur 独立行政法人日本原子力研究開発機構, 原子力科学研究部門 量子ビーム応用研究センター, 研究副主幹 (10370363)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | 高次高潮波発生 / プラズマ / レーザー / 相対論的相互作用 / 相対論的自己集中 / 船首波 / Particle in Cell 法 / クラスタサーバ |
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| Outline of Annual Research Achievements |
1. I equipped the cluster server “Shkaf-2” with additional RAM memory, so that the total RAM memory became 1024 GB.
2. I performed multi-parametric high-resolution 2D simulations using the cluster “Shkaf-2”. I chose the parameters of simulations so that they correspond to the 30 J, 30 fs pulse of the newly constructed JKAREN-P (petawatt) laser, which will start operation in August 2015 in JAEA-Kansai. I scanned the plasma density from 1.E+18 to 1.E+20 per cubic cm at maximum, as it will be accessible in the experiments.
3. Owing to the previous advanced funds payment, which enabled the cluster memory extension ahead of schedule, I performed a series of preliminary low-resolution 3D PIC simulations using the cluster “Shkaf-2”. Basing on the results of these simulations, I found the optimal parameters for the high-resolution 3D PIC simulations on the supercomputer in JAEA-Tokai, whose availability is very limited.
4. The paper on the properties of high-order harmonics generation containing the angular distribution of high-order harmonics obtained with my high-resolution 2D PIC simulations has been submitted to the New Journal of Physics. After revision, the paper has been accepted and published.
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
The cluster “Shkaf-2” is complete and operates as planned. Using it, I performed high-resolution 2D and low-resolution 3D PIC simulations according to the plan.
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| Strategy for Future Research Activity |
Analyzing the accumulated results of multi-parametric 2D PIC simulations, via post-processing, I will summarize the properties of the high-order harmonics, the dependence of their spectra and divergence on the laser-plasma interaction parameters. I will investigate the regimes especially interesting for applications, such as bright high-order harmonics in the “water window” region (wavelength 2.3-4.4 nm) and bright coherent x-ray source with 1 keV photon energy.
I will prepare papers for publications in refereed journals and make presentations for the international and domestic conferences and workshops.
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| Causes of Carryover |
This small amount is the result of rounding in the price estimation.
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| Expenditure Plan for Carryover Budget |
I will use the funds mainly for participation in scientific conferences and for publication fees.
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