A-PHOENIX, an electron cyclotron resonance ion source for the Spiral 2 facility

A-PHOENIX is a new compact hybrid electron cyclotron resonance ion source using a large permanent magnet hexapole (1.92 T at the magnet surface) and high temperature superconducting Solenoids (3 T) to make min- B structure suitable for 28 GHz cw operation. The final assembly of the source was achieved at the end of June 2007. The first plasma of A-PHOENIX at 18 GHz was done on the 16th of August, 2007. The technological specificities of A-PHOENIX are presented. The large hexapole built is presented and experimental magnetic measurements show that it is nominal with respect to simulation. A fake plasma chamber prototype including thin iron inserts showed that the predicted radial magnetic confinement can be fulfilled up to 2.15 T at the plasma chamber wall. Scheduled planning of experiments until the end of 2008 is presented.

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“…Special thin plasma chamber designs including pure iron parts have been studied by simulation. 1 proposed on Fig. 2.…”

Section: B Special Plasma Chambersmentioning

confidence: 97%

“…1. The final detailed drawings were achieved in June 2006 and mechanical parts were ordered since this date.…”

Section: A Hexapolementioning

confidence: 99%

First plasma of the A-PHOENIX electron cyclotron resonance ion source

Thuillier

Lamy

Latrasse

et al. 2008

Review of Scientific Instruments

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“…In tandem with the rapid evolution of accelerator technology, the hybrid superconducting ECR ion source [3] has swiftly emerged as a distinctive technological direction for high-performance ECR ion sources. Distinguished by its remarkable features, including an operational frequency reaching up to 24 GHz, a straightforward structure, low construction costs, high stability, and overall performance akin to superconducting ECR ion sources [4], the hybrid technology finds versatile applications. It can be employed in high-intensity, highly charged ion beam injectors, high-voltage multi-discipline platforms with electrostatic acceleration, and industrialized device applications [5,6].…”

Section: Introductionmentioning

confidence: 99%

Ion beam stability prediction of ECR ion source based on TCN-DTW network

Wang,

Qian,

Sun

et al. 2024

J. Inst.

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The Electron Cyclotron Resonance (ECR) ion source is an irreplaceable apparatus for producing high-intensity, highly charged heavy ion beams, representing a critical component for heavy ion accelerators. The operation of the ECR ion source is inherently influenced by various factors, leading to fluctuations in beam intensity. Such instability not only diminishes the efficacy of accelerator operations but also introduces distortions in terminal experimental data. Addressing these challenges, this study proposes the application of a Temporal Convolutional Network (TCN) based on a Dynamic Time Warping (DTW) loss function (TCN-DTW) for predicting the stability of the ion beams. Prior to constructing the prediction network, raw data undergoes preprocessing through an Interquartile Range (IQR) anomaly detection mechanism and the Savitzky-Golay (SG) filtering algorithm with an adaptive window. Experimental results demonstrate a substantial enhancement in prediction performance when employing the TCN network with the DTW loss function compared to traditional alternatives. This approach facilitates effective forecasting of the ion source beam current trend, offering a basis for the control and correction of long-term stability. Consequently, it provides valuable insights for optimizing the ECR ion source and enhancing overall accelerator operational performance.

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Trends in the production of highly charged ions

Závodszky

2007

Nuclear Instruments and Methods in Physics Research Section B:

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A-PHOENIX, an electron cyclotron resonance ion source for the Spiral 2 facility

Cited by 8 publications

References 8 publications

First plasma of the A-PHOENIX electron cyclotron resonance ion source

First plasma of the A-PHOENIX electron cyclotron resonance ion source

Ion beam stability prediction of ECR ion source based on TCN-DTW network

Trends in the production of highly charged ions

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