TY - JOUR
T1 - Development of a pepper-pot emittance meter for diagnostics of low-energy multiply charged heavy ion beams extracted from an ECR ion source
AU - Nagatomo, T.
AU - Tzoganis, V.
AU - Kase, M.
AU - Kamigaito, O.
AU - Nakagawa, T.
N1 - Publisher Copyright:
© 2015 AIP Publishing LLC.
PY - 2016/2/1
Y1 - 2016/2/1
N2 - Several fluorescent materials were tested for use in the imaging screen of a pepper-pot emittance meter that is suitable for investigating the beam dynamics of multiply charged heavy ions extracted from an ECR ion source. SiO2 (quartz), KBr, Eu-doped CaF2, and Tl-doped CsI crystals were first irradiated with 6.52-keV protons to determine the effects of radiation damage on their fluorescence emission properties. For such a low-energy proton beam, only the quartz was found to be a suitable fluorescent material, since the other materials suffered a decay in fluorescence intensity with irradiation time. Subsequently, quartz was irradiated with heavy 12C4+, 16O4+, and 40Ar11+ ions, but it was found that the fluorescence intensity decreased too rapidly to measure the emittance of these heavy-ion beams. These results suggest that a different energy loss mechanism occurs for heavier ions and for protons.
AB - Several fluorescent materials were tested for use in the imaging screen of a pepper-pot emittance meter that is suitable for investigating the beam dynamics of multiply charged heavy ions extracted from an ECR ion source. SiO2 (quartz), KBr, Eu-doped CaF2, and Tl-doped CsI crystals were first irradiated with 6.52-keV protons to determine the effects of radiation damage on their fluorescence emission properties. For such a low-energy proton beam, only the quartz was found to be a suitable fluorescent material, since the other materials suffered a decay in fluorescence intensity with irradiation time. Subsequently, quartz was irradiated with heavy 12C4+, 16O4+, and 40Ar11+ ions, but it was found that the fluorescence intensity decreased too rapidly to measure the emittance of these heavy-ion beams. These results suggest that a different energy loss mechanism occurs for heavier ions and for protons.
UR - http://www.scopus.com/inward/record.url?scp=84946547284&partnerID=8YFLogxK
U2 - 10.1063/1.4934688
DO - 10.1063/1.4934688
M3 - Article
AN - SCOPUS:84946547284
SN - 0034-6748
VL - 87
JO - Review of Scientific Instruments
JF - Review of Scientific Instruments
IS - 2
M1 - 02B920
ER -