Design and construction of an electrostatic quadrupole doublet lens for nuclear microprobe application

Manuel, Jack; Szilasi, S.Z.; Phillips, Dustin; Dymnikov, Alexander D.; Reinert, Tilo; Rout, B.; Glass, Gary A.

doi:10.1016/j.nimb.2017.03.002

Cited by 3 publications

(2 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Manuel et al, from University of Texas at North Texas has recently developed a novel method to accurately align electrostatic quadrupole triplets. The method utilizes a mechanical jig to align the electrode rods with respect to each other [21]. The compact design of the EQQ lens is expected to reduce the complexity of lens alignment [21] in vacuum as the mechanical jig developed in [21] can be used.…”

Section: Discussionmentioning

confidence: 99%

“…The method utilizes a mechanical jig to align the electrode rods with respect to each other [21]. The compact design of the EQQ lens is expected to reduce the complexity of lens alignment [21] in vacuum as the mechanical jig developed in [21] can be used. This will in turn help in achieving stable sub-micron resolution and sub-micron targeting accuracy.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Simulation of an electrostatic quadrupole quadruplet focusing lens system for MeV multi-ion micro-beam

Chirayath

Arya

et al. 2019

25th International Conference on the Application of Accelerators in Research and Industry

View full text Add to dashboard Cite

In this paper, we present the simulations of an electrostatic quadrupole quadruplet (EQQ) lens system that will be used in a new sub-micron multi-ion beam for radiobiological studies. The new sub-micron beam will be used to carry out fine controlled irradiation of sub-cellular matrix with a variety of ions (H + , He 2+ , C 6+ ) with energies up to 3 MeV/charge. Simulations using the SIMION 8.1 ® have shown that the EQQ lens system, configured with a symmetry normally used in a "Russian quadruplet", can achieve a demagnification factor (Df) of 33 at a working distance (Dw) of ~ 98 mm for a 3MeV/charge ion beam. Such focusing strength is comparable to the separated EQ sextuplet (EQS) lens system used in the sub-micron ion beam at Columbia university (Df ~ 38 and Dw ~ 126 mm) [1], but with a more compact lens design and two fewer quadrupoles. Calculations show that the chromatic and the spherical aberration of the EQQ lens system is comparable to those of the EQS lens system. This indicates that the EQQ lens system may be able to give a performance equivalent to the EQS in the Columbia University micro-ion beam when the object aperture is less than or equal to 30 μm. The compact design is expected to allow for precise alignment of the quadrupole electrodes and is intended to achieve stable micron beam spots at the target position.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Simulation of an electrostatic quadrupole quadruplet focusing lens system for MeV multi-ion micro-beam

Chirayath

Arya

et al. 2019

25th International Conference on the Application of Accelerators in Research and Industry

View full text Add to dashboard Cite

show abstract

Electrostatic focusing lens system for low MeV-ion microprobe: A simulation and optimization study

Arya

Chirayath

et al. 2022

Nuclear Instruments and Methods in Physics Research Section B:

View full text Add to dashboard Cite

Note: Performance of a novel electrostatic quadrupole doublet for nuclear microprobe application

Manuel

Szilasi

Byers

et al. 2018

Review of Scientific Instruments

View full text Add to dashboard Cite

The newly designed and constructed electrostatic quadrupole doublet (EQD) at the University of North Texas (UNT) has achieved mass independent focusing of MeV particles to a spot size of 3.3 × 3.5 m. The EQD is compared to the Louisiana magnetic doublet which is also in use at UNT. Characteristics such as demagnification and sensitivity to aberrations are simulated by the matrix raytracing software, propagation of rays and aberrations by matrices and compared for each focusing system. Particle induced x-ray emission (PIXE) maps of a 2000 mesh Cu grid are compared and show that both doublets produce suitable spot sizes for microprobe analysis. A coarser, 200 mesh grid and incident beams of 2 MeV H and O show the EQD to be stigmatic given common aperture sizes and lens potentials.

show abstract

Design and construction of an electrostatic quadrupole doublet lens for nuclear microprobe application

Cited by 3 publications

References 20 publications

Simulation of an electrostatic quadrupole quadruplet focusing lens system for MeV multi-ion micro-beam

Simulation of an electrostatic quadrupole quadruplet focusing lens system for MeV multi-ion micro-beam

Electrostatic focusing lens system for low MeV-ion microprobe: A simulation and optimization study

Note: Performance of a novel electrostatic quadrupole doublet for nuclear microprobe application

Contact Info

Product

Resources

About