Ion-production efficiency of a singly charged ion source developed toward a 11C irradiation facility for cancer therapy

2019 ◽  
Vol 90 (5) ◽  
pp. 053303
Author(s):  
K. Katagiri ◽  
T. Wakui ◽  
S. Hojo ◽  
A. Yu. Boytsov ◽  
E. D. Donets ◽  
...  
Keyword(s):  
Cancer Therapy ◽  
Production Efficiency ◽  
Ion Source ◽  
Ion Production ◽  
Singly Charged

Progress in Development of a Converging Beam Neutron Source for Driving a Sub-Critical Fission Reactor

2002 ◽  
Author(s):  
G. H. Miley ◽  
H. Momota ◽  
Y. Shaban ◽  
H. Hora
Keyword(s):  
Neutron Source ◽  
Production Efficiency ◽  
Ion Source ◽  
Small Scale ◽  
Production Region ◽  
Fission Reactor ◽  
Plant Safety ◽  
Modular Units ◽  
Single Target ◽  
Ion Production

Several laboratories are studying the possibility of a fission reactor system based on driving a sub-critical assembly using an accelerator-spallation target neutron source. The objective is to effectively eliminate possible criticality and meltdown accidents, increasing plant safety. However, one disadvantage is the large cost projected for the accelerator-driven source. In an ICONE-8 paper we proposed to overcome this problem by use of a Converging Beam Neutron Source (CBNS) to produce 14-MeV D-T fusion neutrons to drive the sub-critical core. [1] The CBNS is analogous to an accelerator-plasma target device with built-in re-circulation of the ions. It offers the unique advantage of being small enough to allow insertion of multiple “modular” units in fuel channel locations (cf. the large single target used in accelerator-drive designs). As proposed in an ICONE-9 paper, a first important step in development of such systems might be use in low power research reactors. [2] This reduces the neutron source strength requirement to a level only slightly above that obtained with present IEC experiments. Still, a key step for CBNS development is to increase the neutron production efficiency obtained in previous small-scale experiments. To do this we have recently developed a unique RF-driven ion source so that the ion production region can be separated from the main CBNS chamber. This has the combined advantages of allowing ion production at relatively high pressure, while the CBNS chamber can be pumped to ultra-low pressure. Initial experiments with this arrangement are presented here and it is shown that a very favorable scaling to the yields required for research reactor operation are predicted.

Accessibility condition of wave propagation and multicharged ion production in electron cyclotron resonance ion source plasma

2016 ◽  
Vol 87 (2) ◽  
pp. 02A710 ◽  
Author(s):  
Yushi Kato ◽  
Keisuke Yano ◽  
Takuya Nishiokada ◽  
Tomoki Nagaya ◽  
Daiju Kimura ◽  
...  
Keyword(s):  
Wave Propagation ◽  
Cyclotron Resonance ◽  
Electron Cyclotron Resonance ◽  
Ion Source ◽  
Electron Cyclotron ◽  
Ion Production

scholarly journals Numerical modeling of the negative hydrogen ion production in the ion source for cyclotrons

2017 ◽  
Author(s):  
M. Onai ◽  
H. Etoh ◽  
S. Mattei ◽  
T. Shibata ◽  
Y. Aoki ◽  
...  
Keyword(s):  
Numerical Modeling ◽  
Ion Source ◽  
Hydrogen Ion ◽  
Ion Production ◽  
Negative Hydrogen Ion

Development of compact 2.45 GHz ECR ion source for generation of singly charged ions

2019 ◽  
Vol 14 (01) ◽  
pp. C01009-C01009
Author(s):  
S.L. Bogomolov ◽  
A.E. Bondarchenko ◽  
A.A. Efremov ◽  
Yu.E. Kostyukhov ◽  
K.I. Kuzmenkov ◽  
...  
Keyword(s):  
Ion Source ◽  
Ecr Ion Source ◽  
Singly Charged ◽  
Charged Ions

scholarly journals Calcium and lithium ion production for laser ion source

2016 ◽  
Vol 87 (2) ◽  
pp. 02A901 ◽  
Author(s):  
M. Okamura ◽  
K. Palm ◽  
C. Stifler ◽  
D. Steski ◽  
S. Ikeda ◽  
...  
Keyword(s):  
Lithium Ion ◽  
Ion Source ◽  
Laser Ion Source ◽  
Ion Production

scholarly journals Improvement of microwave injection for heavy-ion production at a compact ECR ion source

2018 ◽  
Author(s):  
Masayuki Muramatsu ◽  
Kouta Hamada ◽  
Takuto Watanabe ◽  
Yushi Kato ◽  
Katsuyuki Takahashi ◽  
...  
Keyword(s):  
Heavy Ion ◽  
Ion Source ◽  
Ecr Ion Source ◽  
Ion Production

Effect of Operating Parameters on Analyte Signals in Elemental Electrospray Mass Spectrometry

1995 ◽  
Vol 49 (3) ◽  
pp. 324-334 ◽  
Author(s):  
George R. Agnes ◽  
Gary Horlick
Keyword(s):  
Flow Rate ◽  
Alkali Metals ◽  
Gas Flow ◽  
Ion Source ◽  
Gas Flow Rate ◽  
Singly Charged ◽  
Capillary Tip ◽  
Interface Parameters ◽  
Two Parameters ◽  
Solvent Clusters

A parametric investigation of an electrospray ion source and interface has been carried out with a focus on elemental analysis. The source and interface variables investigated were the curtain-gas flow rate and the voltage biases of the electrospray capillary tip, the front plate, the sampling plate, the skimmer, and the barrel ion extractor lens. The analytes studied (M+ and M++) included the alkali metals, the alkaline earth metals, and cobalt—all prepared in methanol (MeOH) solutions. The two most important interface parameters in terms of their effect on the nature of the resulting mass spectrum were the curtain-gas flow rate and the sampling-plate voltage bias. A minimum, but modest, flow rate of curtain gas was required in order to observe analyte ion signals, and, when combined with a low sampling-plate voltage, the observed signal species were primarily analyte ion–solvent clusters [M(MeOH) n+1 and M(MeOH) m+2]. As the values of these two parameters were increased, these species were declustered, plus-two analyte ions were reduced to plus-one species, and ultimately the mass spectra were dominated by the bare singly charged analyte ion (M+). Also, these two variables (curtain-gas flow rate and sampling-plate voltage) seem to act in a synergistic manner, with neither variable alone able to effect complete declustering and charge reduction.

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