Measurements of the profile of an intense electron beam

Bubley, Alexander; Panasyuk, V. M.; Parkhomchuk, V. V.; Reva, V. B.

doi:10.1134/s0020441206010106

Cited by 7 publications

(3 citation statements)

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“…Interaction of the electron and intense ion currents necessitated control of electron density in the beam cross-section. For this reason, special electron guns are developed, which allow noticeably decreasing the electron beam density at the center where the intense ion beam is stored [47,48] See Fig. 14.…”

Section: Electron Currentmentioning

confidence: 61%

Cooling Methods for Charged Particle Beams

Parkhomchuk

Skrinsky

2008

Rev. Accl. Sci. Tech.

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Section: Electron Currentmentioning

confidence: 61%

Cooling Methods for Charged Particle Beams

Parkhomchuk

Skrinsky

2008

Rev. Accl. Sci. Tech.

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“…1, consists of an array of short pancake-coil solenoids in the drift, the gun, and the collector sections [2]. The new system has the advantage that local field errors can be corrected by adjusting the coil angle [3]. However, the pancake coils present challenging requirements in terms of mechanical alignment to ensure B z /B r < 5 × 10 −4 in terms of field quality, where B z is the axial field component and B r the radial field component.…”

Section: Introductionmentioning

confidence: 99%

Alignment of a Solenoid System by Means of a Translating-Coil Magnetometer

Pentella,

Mattsson Kjellqvist,

Petrone

et al. 2024

IEEE Trans. Appl. Supercond.

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The electron cooler operating at the Antiproton Decelerator (AD) at CERN is at the end of its life cycle. The electron cooler, operated for over 40 years, has been used to decelerate anti-proton beams having an energy of about 5.3 MeV. A new electron cooler is being designed and expected to be commissioned during the Long Shutdown 3 (LS3) in 2026. The initial magnet system design consists of an array of pancake solenoid coils as well as an expansion solenoid. The mechanical alignment of the pancake coils must comply with challenging requirements, where the coils need to have 0.1 mrad angle positioning accuracy and Bz/Br < 5 × 10 −4 in terms of field quality. In this paper, a new measurement method for the determination of a solenoid coil angle is presented, which allows for faster identification of the pancake-coil angles. The method was experimentally validated on an existing transducer, and the results were used for the design of a new measurement system capable of meeting the requirements.

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“…The small geometric dimensions in MHCD's have limited detailed quantitative experimental diagnostic studies of their properties, although some examples of such studies have been reported [2][3][4][5][6][7]. Probe and microwave diagnostics are very challenging due to the reduced dimensions of the discharge and thus, spectroscopy is the technique most commonly used to study MHCD discharges [8][9][10][11][12][13][14][15][16][17], Modeling and simulation have also been carried out to understand the basic physics of microdischarges. In this paper, here we intend to simulate the cylindrical geometry of a MHCD as realistically as possible by taking into account reasonable boundary conditions in the discharge behavior within a two-dimensional, self-consistent fluid model.…”

Section: Introductionmentioning

confidence: 99%

Predicted Properties of Cylindrical Microhollow Cathode Discharges in Helium Using a Two‐Dimensional, Self‐Consistent Fluid Model

Meng

Yan

et al. 2009

Contrib. Plasma Phys.

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In this paper, a numerical simulation model was developed to simulate the helium plasma in a cylindrical Microhollow cathode based on a two-dimensional, time-dependent and self-consistent fluid model. The aim of our work is to provide estimates of the main discharge and plasma parameters and to help understand the basic mechanisms governing the MHCD devices. Accurate solutions of the continuity equations, electron energy balance equation and possion's equation with realistic boundary conditions are obtained. Realistic discharge characteristics are simulated, which are very important to understand the phenomena of microhollow cathode discharge (MHCD). The results show that there exists a hollow cathode effect in the discharge process. He electric field is mainly a radial field close to the cathode in the discharge area. The influences of gas pressure and cathode dimension on discharge characteristics were also investigated.

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Measurements of the profile of an intense electron beam

Cited by 7 publications

References 0 publications

Cooling Methods for Charged Particle Beams

Cooling Methods for Charged Particle Beams

Alignment of a Solenoid System by Means of a Translating-Coil Magnetometer

Predicted Properties of Cylindrical Microhollow Cathode Discharges in Helium Using a Two‐Dimensional, Self‐Consistent Fluid Model

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