New Ion Source Filament for Prolonged Ion Source Operation on A Medical Cyclotron

Dave Prevost; Keerthi Jayamanna; Linda Graham; Sam Varah; Cornelia Hoehr

doi:10.3390/instruments3010005

New Ion Source Filament for Prolonged Ion Source Operation on A Medical Cyclotron

Instruments ◽

10.3390/instruments3010005 ◽

2019 ◽

Vol 3 (1) ◽

pp. 5 ◽

Cited By ~ 1

Author(s):

Dave Prevost ◽

Keerthi Jayamanna ◽

Linda Graham ◽

Sam Varah ◽

Cornelia Hoehr

Keyword(s):

Ion Source ◽

Efficient Operation ◽

Medical Isotopes ◽

Maintenance Activities ◽

Cost Efficient ◽

Source Operation

Cyclotrons are an important tool for accelerator sciences including the production of medical isotopes for imaging and therapy. For their successful and cost-efficient operation, the planned and unplanned down time of the cyclotron needs to be kept at a minimum without compromising reliability. One of the often required maintenance activities is the replacement of the filament in the ion source. Here, we are reporting on a new ion source filament tested on a medical cyclotron and its prolonging effect on the ion source operation.

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INFLUENCE OF METAL HYDRIDE HOLLOW CATHODE ON PENNING ION SOURCE OPERATION

10.46813/2021-131-065 ◽

2021 ◽

pp. 65-68

Author(s):

I. Sereda ◽

D. Ryabchikov ◽

Ya. Hrechko ◽

Ie. Babenko

Keyword(s):

Plasma Density ◽

Hollow Cathode ◽

Metal Hydride ◽

Discharge Current ◽

Ion Source ◽

Negative Bias ◽

Working Pressure ◽

Discharge Operation ◽

Source Operation ◽

Gas Supply

The influence of metal hydride hollow cathode on a Penning ion source operation has been carried out. The feature of investigation is hydrogen injection only due to its desorption from metal hydride under ion-stimulated processes. The regimes of optimal discharge operation in the hollow cathode mode are determined. It has been revealed that the transition to the hollow cathode mode occurs at lower voltages, the discharge works without external gas supply, and the working pressure in the cell is set at the level determined by the discharge current. The supply of a negative bias to the metal hydride hollow cathode weakly affects the features of the emission of axial particles, although it allows the increase of plasma density near the metal hydride hollow cathode.

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Status report on ECR ion source operation at GANIL

Review of Scientific Instruments ◽

10.1063/1.1690447 ◽

2004 ◽

Vol 75 (5) ◽

pp. 1488-1491 ◽

Cited By ~ 4

Author(s):

P. Lehérissier ◽

C. Barué ◽

C. Canet ◽

M. Dubois ◽

M. Dupuis ◽

...

Keyword(s):

Ion Source ◽

Status Report ◽

Ecr Ion Source ◽

Source Operation

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Dissociation of Molecular Hydrogen Ions Enhanced by Ion-Source Operation

Physical Review ◽

10.1103/physrev.139.a1068 ◽

1965 ◽

Vol 139 (4A) ◽

pp. A1068-A1071 ◽

Cited By ~ 11

Author(s):

E. S. Chambers

Keyword(s):

Molecular Hydrogen ◽

Ion Source ◽

Hydrogen Ions ◽

Source Operation

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A Concept for the Dynamic Adjustment of Maintenance Intervals by Analysing Heterogeneous Data

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.794.507 ◽

2015 ◽

Vol 794 ◽

pp. 507-515 ◽

Cited By ~ 2

Author(s):

Michael Freitag ◽

Stephan Oelker ◽

Marco Lewandowski ◽

Rajesh Murali

Keyword(s):

Enterprise Resource Planning ◽

Wind Farm ◽

Resource Planning ◽

Heterogeneous Data ◽

Remaining Useful Life ◽

Offshore Wind ◽

Dynamic Adjustment ◽

Efficient Operation ◽

Industrial Facilities ◽

Maintenance Activities

Efficient operation and maintenance processes are important factors to reduce the operating costs of industrial facilities and components. Therefore, both research and industry developed maintenance strategies ranging from fixed time intervals to condition-based activities. However, due to unpredictable events, disturbances and unknown processing times for maintenance activities, many strategies do not meet the requirements of real-world industrial systems. In this paper, a new data-driven concept is presented where data analysis is used to support the dynamic adjustments of maintenance intervals. An overall strategy is developed in which the analysis of data is an integral part for standard maintenance processes, considering their particular workflow and their constraints. The analysed data come from different systems such as Enterprise Resource Planning, Condition Monitoring Systems, and internal service logs of the components or from maintenance activities. The concept encompasses the aligned application of different methods for aggregating these data and for predicting the component’s condition and its remaining useful life. In particular, it is exemplarily shown how the Weibull distribution, the Wiener process, and neural networks are combined to support decisions regarding the dynamic adjustment of the maintenance intervals in industrial facilities. This leads to a better utilisation of components, avoids failures and breakdowns and saves cost. The capability and applicability of these methods is illustrated by applying them to generators of an offshore wind farm.

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