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Highly collimated high charge GeV electron beam from laser wakefield acceleration via ionization injection
https://repo.qst.go.jp/records/75622
https://repo.qst.go.jp/records/7562203957fd6-853b-4f4e-be24-3bad2fdbcd1c
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-04-17 | |||||
| タイトル | ||||||
| タイトル | Highly collimated high charge GeV electron beam from laser wakefield acceleration via ionization injection | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||
| 資源タイプ | conference object | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
黄, 開
× 黄, 開× Neagu, Liviu× Nakamiya, Yoshihide× Rotaru, Florin× Secareanu, Radu× Cuciuc, Mihai× Matei, Dan× Pirozhkov, Alexander× Bierwage, Andreas× Ogura, Koichi× Sagisaka, Akito× Nakanii, Nobuhiko× Kiriyama, Hiromitsu× 神門, 正城× HUANG, KAI× Pirozhkov, Alexander× Bierwage, Andreas× Ogura, Koichi× Sagisaka, Akito× Nakanii, Nobuhiko× Kiriyama, Hiromitsu× Kando, Masaki |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Laser wakefield acceleration (LWFA) [1] has been studied intensively in the past decades. With the optimization of chirped pulse amplification technology (CPA) [2], high quality electron beams with energies over GeV [3] have been generated. The ultrahigh acceleration gradient allows for the construction of a table top x-ray free electron laser [4]. To achieve lasing in the x-ray wavelength range, GeV class electron beam with high brightness is necessary. We succeeded generating highly collimated quasi-monoenergetic electron beams with peak energies up to GeV via ionization-injection [5, 6] using the J-KAREN-P laser. By incident of 300 TW laser pulses into a 10 mm gas jet, comparison studies were performed with pure (He), (He:Ne) mixture and (He:N2) mixture gases. We observed that the divergences, energies and charges of electron beams have dependences on gas species and mixture ratios. The smallest divergence of electron beams from (He:Ne) was merely 0.18 mrad (rms), which was 5 times smaller than that from (He:N2) gas. For many shots, we got extremely high charge electron bunches at plasma denties lower than the self-injection threshold. This study shows the capabilities of the ionization injection regime manipulate and optimize the qualities of the GeV class electron beams from laser wakefield acceleration. |
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| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | HEDS2019 | |||||
| 発表年月日 | ||||||
| 日付 | 2019-04-24 | |||||
| 日付タイプ | Issued | |||||
