Design and optimization of a Goubau line for calibration of BPMs for particle accelerators

He, Jun; Sui, Yanfeng; Li, Yong; Wang, Anxin; Tang, Xuhui; Zhao, Ying; Ye, Qiang; Ma, Huizhou; Xu, Taoguang; Yue, Junhui; Cao, Jiaoshe

doi:10.1016/j.nima.2022.167635

Cited by 7 publications

(6 citation statements)

References 15 publications

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“…We considered different pump power levels and wavelengths for RFA, as well as various configurations of hybrid EDFA-RFA. The table (2) and figure (12) show the best values obtained for each configuration. The optical amplifiers' performance was assessed based on gain, NF, Q factor, and BER.…”

Section: The Optical Amplifiermentioning

confidence: 99%

“…When a Gaussian light beam is directed towards a dielectric interface, it deviates from geometric optics predictions. This deviation, known as non-specular shifts, has been studied by researchers from the early 20th century to the present day [2]. Various practical applications built on these shifts have proven to be highly intriguing [3].…”

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confidence: 99%

“…The aforementioned medium is traversed by the two beams until the "turning points" are reached, whereupon the two beams are redirected back to the homogeneous medium, denoted by n 1 , where they can be distinctly discerned. It is noteworthy that Fig (2). effectively showcases the Wave Propagation of Both Wavelengths, which is of paramount importance in the realm of scientific inquiry.…”

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confidence: 99%

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Optimized Optical Splitter Demultiplexing basedon light Beam Incidence on a CorrugatedInterface and Beam Propagation Method (BPM)

Aboshosha,

Eltokhy,

Nagy

et al. 2024

Preprint

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In this research, we investigate the segregation of Gaussian light beam wavelengths using corrugated triangular wave-index interfaces with the beam propagation method (BPM). We present a novel approach for optical wavelength demultiplexing (DEMUX) utilizing the Goos-Haenchen (GH) shift and continuous refraction at the interface. By exploiting wavelength-dependent lateral shifts (GH shifts), reflected beams achieve spatial beam separation. Light beams exhibit distinctive "turning points" in the medium, resulting in spatially separated "back-refracted" beams. Meta-heuristics were employed to optimize operational parameters for this demultiplexing optical splitter, enabling its application in "corrugated triangular wave-index integrated-optics" structures within optical fiber networks. Artificial Intelligence (AI) in conjunction with an Ant Colony (AC) was utilized for optimal beam incidence. Findings suggest improved demultiplexer performance with three media compared to two media for 2 and multi-wavelength demultiplexing, highlighting a significant academic contribution of this study.

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Section: The Optical Amplifiermentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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Optimized Optical Splitter Demultiplexing basedon light Beam Incidence on a CorrugatedInterface and Beam Propagation Method (BPM)

Aboshosha,

Eltokhy,

Nagy

et al. 2024

Preprint

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“…To test the machining quality of the HEPS BPMs, a calibration system based on stretched wires was set up in a room with constant temperature and humidity [17]. We fixed the BPM on a movement platform, the electromagnetic field on the stretched wire was used to simulate the beam, and the responding of the BPM to beam was recorded by the calibration system.…”

Section: Comparison Between the Cst Simulation And Calibration System...mentioning

confidence: 99%

Preliminary Analysis of Beam Position Monitor Accuracy

He,

Sui,

Liang

et al. 2024

Symmetry

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The beam position is the most important reference basis for the operation of synchrotron radiation light sources, particularly for commissioning the first-turn injection of fourth-generation light sources. To improve the accuracy of the beam position measurement, we analyzed methods for calculating the beam position, and a finite element calculation and the stretched wire calibration system were used to demonstrate the procedure. We proved the relationship between the coverage range, fitting order, scanning step size, and accuracy both theoretically and experimentally, which can provide a basis for selecting the appropriate fitting order for different operation stages of the accelerator. It was proved that the accuracy of beam position calculations using simplified polynomial coefficients is comparable to those without a simplified one, which can save resources for reading electronic processing. The testing results of a batch of beam position monitors (BPMs) were in good agreement with the finite element calculation results, and the small difference between the manufactured BPMs also proved that quality control was performed well, and it benefited from button sorting.

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“…Conical launchers have often been used to launch Goubau waves [3,19,20]. The conical launcher is a natural choice because of the similarity between the TEM wave mode in a coaxial feed and the TM fields in the Goubau mode.Here we explore the performance of conical launchers by simulation, including both large and small-radius conductors.…”

Section: Conical Goubau Wave Launchermentioning

confidence: 99%

Investigation of Goubau Wave Propagation on Large Pipes for Sensing Applications

Greve

Devkota

Ohodnicki

et al. 2023

Sensors

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We examine the application of guided waves on a single conductor (Goubau waves) for sensing. In particular, the use of such waves to remotely interrogate surface acoustic wave (SAW) sensors mounted on large-radius conductors (pipes) is considered. Experimental results using a small-radius (0.0032 m) conductor at 435 MHz are reported. The applicability of published theory to conductors of large radius is examined. Finite element simulations are then used to study the propagation and launching of Goubau waves on steel conductors up to 0.254 m in radius. Simulations show that waves can be launched and received, although energy loss into radiating waves is a problem with current launcher designs.

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Design and optimization of a Goubau line for calibration of BPMs for particle accelerators

Cited by 7 publications

References 15 publications

Optimized Optical Splitter Demultiplexing basedon light Beam Incidence on a CorrugatedInterface and Beam Propagation Method (BPM)

Optimized Optical Splitter Demultiplexing basedon light Beam Incidence on a CorrugatedInterface and Beam Propagation Method (BPM)

Preliminary Analysis of Beam Position Monitor Accuracy

Investigation of Goubau Wave Propagation on Large Pipes for Sensing Applications

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