Measurement method for laser-accelerated multi-hundred-MeV protons utilizing multiple Coulomb scattering in an emulsion cloud chamber. (1st January 2023)

• Record Type: Journal Article
• Authors: Asai, Takafumi; Inoue, Chihiro; Jinno, Satoshi; Kitagawa, Nobuko; Kodaira, Satoshi; Morishima, Kunihiro; Fukuda, Yuji; Yamauchi, Tomoya; Kanasaki, Masato
• Is Part Of: Japanese journal of applied physics. Volume 62:Number 1(2023)
• Publication Date: 2023-01-01
• Subjects: nuclear emulsion -- Ion beam diagnosis -- laser plasma -- laser driven ion acceleration; Physics -- Periodicals; 621.05
• DOI: 10.35848/1347-4065/acac59
• Languages: English
• ISSNs: 0021-4922

Abstract

Abstract: We have developed a measurement method for laser-accelerated multi-hundred-MeV-class protons using an emulsion cloud chamber (ECC), which consists of a stack of nuclear emulsion films and scatterer plates. Based on multiple Coulomb scattering (MCS) theory depending on the incident energy of protons, we have constructed a regression model to inversely estimate the incident energy by means of support vector regression (SVR) with a radial basis function. The prediction accuracy was approximately 10% (standard deviation) for protons with energies up to 0.3 GeV in a 25 layer ECC with 0.5 mm thick tungsten plates, corresponding to a 2 cm thick compact detector.