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Fluctuation in energy-loss measurements in allene-doped liquid argon for heavy ions
https://repo.qst.go.jp/records/45570
https://repo.qst.go.jp/records/4557036ebfef4-fece-4c1a-8609-bd27485426a5
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2009-07-06 | |||||
| タイトル | ||||||
| タイトル | Fluctuation in energy-loss measurements in allene-doped liquid argon for heavy ions | |||||
| 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_6501 | |||||
| 資源タイプ | journal article | |||||
| 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 |
Masuda, Kimiaki
× Masuda, Kimiaki× Nishikido, Fumihiko× Shibamura, Eido× Kikuchi, Jun× Doke, Tadayoshi× Murakami, Takeshi× 増田 公明× 錦戸 文彦× 菊池 順× 道家 忠義× 村上 健 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Liquid argon (LAr) has suitable properties for use as a particle-detector medium, however, its response to heavy ions is not linear, because of the non-perfect collection of charge produced by the incident ions due to the strong recombination between the liberated electrons and argon ions. We were able to improve the linearity of the response by doping photoionization materials, such as allene (C3H4), to LAr. Using allene-doped LAr, we made some experiments of the heavy ion calorimeters for the mass identification of relativistic iron ions, but this approach was unsuccessful. We therefore investigated the cause of the failure using relativistic heavy ions of neon, argon and iron. The energy resolutions obtained experimentally were of the order of several percent at the full width at half maximum (FWHM) for neon to iron ions passing through a LAr gap of 10 mm. These values were 2 or 3 times worse than those predicted theoretically, and the poor energy resolution led to insufficient mass resolution. Here, we describe methods for measuring fluctuation in energy-loss signals in LAr, and discuss the factors determining the resolution. | |||||
| 書誌情報 |
Nuclear Instruments & Methods in Physics Research Section A 巻 570, 号 3, p. 487-497, 発行日 2006-11 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0168-9002 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1016/j.nima.2006.10.189 | |||||
