Thermo-mechanical design of the Plasma Driver Plate for the MITICA ion source

2010 ◽  
Vol 85 (7-9) ◽  
pp. 1073-1079 ◽  
Author(s):  
Mauro Pavei ◽  
Mauro Dalla Palma ◽  
Diego Marcuzzi
Keyword(s):  
Mechanical Design ◽  
Ion Source ◽  
Driver Plate

Thermo-mechanical design of the extraction grids for RF negative ion source at HUST

2017 ◽  
Vol 114 ◽  
pp. 1-5 ◽  
Author(s):  
Chen Zuo ◽  
Kaifeng Liu ◽  
Dong Li ◽  
Zhiyuan Mei ◽  
Zhe Zhang ◽  
...  
Keyword(s):  
Mechanical Design ◽  
Ion Source ◽  
Negative Ion

The mechanical design and simulation of a scaled H− Penning ion source

2016 ◽  
Vol 87 (2) ◽  
pp. 02B131 ◽  
Author(s):  
T. Rutter ◽  
D. Faircloth ◽  
D. Turner ◽  
S. Lawrie
Keyword(s):  
Mechanical Design ◽  
Ion Source

scholarly journals Development of the radio frequency quadrupole proton linac for ESS-Bilbao

2020 ◽  
Vol 231 ◽  
pp. 02001
Author(s):  
Juan Luis Muñoz ◽  
Ibon Bustinduy ◽  
Igor Rueda ◽  
David de Cos
Keyword(s):  
Radio Frequency ◽  
Frequency Tuning ◽  
Mechanical Design ◽  
Design Procedure ◽  
Ion Source ◽  
Beam Dynamics ◽  
Radio Frequency Quadrupole ◽  
Electromagnetic Design ◽  
Rf Cavity ◽  
Cavity Design

The Radio Frequency Quadrupole (RFQ) linear accelerator for ESS-Bilbao is described. This device will complete ESS-Bilbao injection chain after the ion source and the LEBT. The design was finished in 2015 and machining of the accelerator cavity started in 2016. The RFQ is a 4-vane structure, aimed to accelerate protons from 45 keV to 3:0MeV and operating at 352:2MHz in pulsed mode with a duty cycle up to 10%. Total length is about 3:1m divided in 4 segments. Each segment is itself assembled from four components, named vanes, by using polymeric vacuum gaskets with no brazing among them. Notable aspects of the design are the constant mean aperture R0, vane radius ρ and thus ρ/R0 ratio and also uniform inter vane voltage. Novel procedures for the design of the modulation and integrated beam dynamics and electromagnetic design have been developed for this task. In this paper, the complete design procedure and its results are presented, including beam dynamics, RF cavity design, field flatness and frequency tuning, cooling and thermo-mechanical design.

Mechanical Design of a Nb3Sn Superconducting Magnet System for a 45 GHz ECR Ion Source

2018 ◽  
Vol 28 (3) ◽  
pp. 1-6 ◽  
Author(s):  
Mariusz Juchno ◽  
Li Zhu ◽  
Aurelio Hafalia ◽  
Wang Lu ◽  
Emmanuele Ravaioli ◽  
...  
Keyword(s):  
Mechanical Design ◽  
Superconducting Magnet ◽  
Ion Source ◽  
Ecr Ion Source ◽  
Magnet System ◽  
Superconducting Magnet System

Nucleation and Early Growth of Sputtered thin Films

1970 ◽  
Vol 28 ◽  
pp. 516-517
Author(s):  
Dudley M. Sherman ◽  
Thos. E. Hutchinson
Keyword(s):  
Thin Films ◽  
Electron Beam ◽  
Ion Beam ◽  
Ion Source ◽  
Water Cooling ◽  
Stages Of Growth ◽  
Lens Assembly ◽  
Microscope Technique ◽  
Ion Beam Sputter Deposition

The in situ electron microscope technique has been shown to be a powerful method for investigating the nucleation and growth of thin films formed by vacuum vapor deposition. The nucleation and early stages of growth of metal deposits formed by ion beam sputter-deposition are now being studied by the in situ technique.A duoplasmatron ion source and lens assembly has been attached to one side of the universal chamber of an RCA EMU-4 microscope and a sputtering target inserted into the chamber from the opposite side. The material to be deposited, in disc form, is bonded to the end of an electrically isolated copper rod that has provisions for target water cooling. The ion beam is normal to the microscope electron beam and the target is placed adjacent to the electron beam above the specimen hot stage, as shown in Figure 1.

Aspects of high-resolution imaging with a scanning ion microprobe

1986 ◽  
Vol 44 ◽  
pp. 750-751
Author(s):  
R. Levi-Setti ◽  
J. M. Chabala ◽  
Y. L. Wang
Keyword(s):  
Metal Ion ◽  
Secondary Ion Mass Spectrometry ◽  
Chromatic Aberration ◽  
Ion Source ◽  
Ion Microprobe ◽  
Emission Pattern ◽  
Intrinsic Resolution ◽  
Resolution Imaging ◽  
20 Nm ◽  
Secondary Ion

We have shown the feasibility of 20 nm lateral resolution in both topographic and elemental imaging using probes of this size from a liquid metal ion source (LMIS) scanning ion microprobe (SIM). This performance, which approaches the intrinsic resolution limits of secondary ion mass spectrometry (SIMS), was attained by limiting the size of the beam defining aperture (5μm) to subtend a semiangle at the source of 0.16 mr. The ensuing probe current, in our chromatic-aberration limited optical system, was 1.6 pA with Ga+ or In+ sources. Although unique applications of such low current probes have been demonstrated,) the stringent alignment requirements which they imposed made their routine use impractical. For instance, the occasional tendency of the LMIS to shift its emission pattern caused severe misalignment problems.

The new CM-Series TEMs: integration of a five-axis motorized, fully computer-controlled goniometer

1993 ◽  
Vol 51 ◽  
pp. 258-259
Author(s):  
Marc J.C. de Jong ◽  
P. Emile S.J. Asselbergs ◽  
Max T. Otten
Keyword(s):  
Mechanical Design ◽  
Computer Control ◽  
Objective Lens ◽  
Access Port ◽  
Vibration Stability ◽  
Transmission Electron ◽  
Computer Controlled ◽  
High Degree ◽  
Five Axis ◽  
Five Axes

A new step forward in Transmission Electron Microscopy has been made with the introduction of the CompuStage on the CM-series TEMs: CM120, CM200, CM200 FEG and CM300. This new goniometer has motorization on five axes (X, Y, Z, α, β), all under full computer control by a dedicated microprocessor that is in communication with the main CM processor. Positions on all five axes are read out directly - not via a system counting motor revolutions - thereby providing a high degree of accuracy. The CompuStage enters the octagonal block around the specimen through a single port, allowing the specimen stage to float freely in the vacuum between the objective-lens pole pieces, thereby improving vibration stability and freeing up one access port. Improvements in the mechanical design ensure higher stability with regard to vibration and drift. During stage movement the holder O-ring no longer slides, providing higher drift stability and positioning accuracy as well as better vacuum.

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