Review of Scientific Instruments最新文献_第5页

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-03-01 DOI: 10.1063/5.0233747

Igor Sokolović, Michael Schmid, Ulrike Diebold, Martin Setvín

引用次数: 0

Optical design for the single crystal neutron diffractometer Pioneer.

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-03-01 DOI: 10.1063/5.0247408

Yaohua Liu, Peter Torres, Scott Dixon, Cameron Hart, Darian Kent, Anton Khaplanov, Bill McHargue, Kumar Mohindroo, Rudolf Thermer

{"title":"Optical design for the single crystal neutron diffractometer Pioneer.","authors":"Yaohua Liu, Peter Torres, Scott Dixon, Cameron Hart, Darian Kent, Anton Khaplanov, Bill McHargue, Kumar Mohindroo, Rudolf Thermer","doi":"10.1063/5.0247408","DOIUrl":"https://doi.org/10.1063/5.0247408","url":null,"abstract":"Pioneer is a single-crystal neutron diffractometer optimized for small-volume samples and weak signals at the Second Target Station at Oak Ridge National Laboratory. This paper presents the preliminary optical design progress, focusing on the rationale behind key design choices. It covers the T0 and bandwidth disk choppers, guide and beam control system, incident-beam polarizer, scattering beam collimators, and additional strategies. The chopper locations are selected to maximize neutron transport while taking advantage of standardized shielding structures. To accommodate the maintenance shield, operational shutter, and polarizing V-cavity, the guide design includes significant gaps. When these optical components are moved out of the beam path, oversized collimators, rather than guides, will be translated in. Pioneer will utilize slit packages to control beam size and divergence and a translatable polarizing V-cavity. Absorbing panels are strategically placed near the end station to minimize background. An oscillating radial collimator, operating in a shift mode, will be used with the vertical cylindrical detector, while a fixed multi-cone collimator will be used with the bottom flat detector. These collimators will enable the detection of weak signals when complex sample environments are used.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 3","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143650040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Minimizing read noise in liquid crystal x-ray detectors using particle-in-binder HgI2 layers.

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-03-01 DOI: 10.1063/5.0231219

Bong Gyu Rho, Sam Hak Baek, Young Suk An, Wei Lei, Se Yong Choi, Byung Seong Bae

引用次数: 0

In situ heating cell for temperature dependent transmission x-ray absorption spectroscopy (XAS) measurement with a laboratory based spectrometer.

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-03-01 DOI: 10.1063/5.0253653

S Praetz, D Grötzsch, C Schlesiger, D Motz, M Würth, R Zimmermann, R Lucka, W Malzer, D Lützenkirchen-Hecht, F Renz, B Kanngießer

{"title":"In situ heating cell for temperature dependent transmission x-ray absorption spectroscopy (XAS) measurement with a laboratory based spectrometer.","authors":"S Praetz, D Grötzsch, C Schlesiger, D Motz, M Würth, R Zimmermann, R Lucka, W Malzer, D Lützenkirchen-Hecht, F Renz, B Kanngießer","doi":"10.1063/5.0253653","DOIUrl":"https://doi.org/10.1063/5.0253653","url":null,"abstract":"For the investigation of spin crossover (SCO) complexes by x-ray absorption spectroscopy (XAS) measurements in the tender to hard x-ray regime, a transmission heating cell has been developed. Some SCO complexes show a spin transition at certain temperatures above room temperature (RT). To measure a reliable hysteresis curve, high temperature stability (preferably <0.5 °C) as well as minimal overheating of the setpoint temperatures (<1 °C) has been achieved. The cell is designed for use in our von Hámos XAS laboratory spectrometer. The SCO complex [Fe(bzimpy)2](ClO4)2 · 0.25H2O was investigated as a first proof-of-principle experiment. In situ measurements up to 250 °C were carried out, showing the characteristic spin transition of the SCO complex during heating. Further XAS measurements were conducted at beamline BL10 of the DELTA storage ring, which demonstrated the feasibility of in situ measurements during a continuous temperature ramp with our heating cell. The current temperature limit of the cell is 500 °C when used in vacuum. Hence, the cell can also be used for other sample systems, such as thermoelectric materials, which are frequently investigated in this temperature regime.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 3","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143731525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Two-chamber gas target for laser-plasma electron source.

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-03-01 DOI: 10.1063/5.0226055

P Drobniak, E Baynard, A Beck, J Demailly, D Douillet, A Gonnin, G Iaquaniello, G Kane, S Kazamias, V Kubytskyi, M Lenivenko, N Lericheux, B Lucas, B Mercier, Y Peinaud, M Pittman, J Serhal, K Cassou

{"title":"Two-chamber gas target for laser-plasma electron source.","authors":"P Drobniak, E Baynard, A Beck, J Demailly, D Douillet, A Gonnin, G Iaquaniello, G Kane, S Kazamias, V Kubytskyi, M Lenivenko, N Lericheux, B Lucas, B Mercier, Y Peinaud, M Pittman, J Serhal, K Cassou","doi":"10.1063/5.0226055","DOIUrl":"https://doi.org/10.1063/5.0226055","url":null,"abstract":"Exploring novel target schemes for laser wakefield accelerators is essential to address the challenge of increasing repetition rates while ensuring the stability and quality of the produced electron beams. This paper introduces and discusses the prototyping of a two-chamber gas target, integrated into the beamline and operating under continuous gas flow, in the framework of ionization injection. We present the numerical fluid modeling employed to assist the density profile shaping, with a focus on gas mixing and dopant confinement. The importance of localized high-Z gas for ionization injection is demonstrated through particle-in-cell simulations using the simulated gas profiles. We describe the test bench used for prototype evaluation, specifically addressing the plasma electron density and the longitudinal distribution of species relevant to ionization injection. The lifetime of the target at 10 Hz and 60 mJ is measured for different materials, and its effect on the resulting electron beam is assessed using particle-in-cell simulations. Finally, we outline perspectives on high-power operation.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 3","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143711163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

OpenFMR: An open-source broadband ferromagnetic resonance spectrometer. OpenFMR：开放源宽带铁磁共振光谱仪。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-03-01 DOI: 10.1063/5.0241406

Tiago de Oliveira Schneider, Shalini Sharma, Amir Khan, Markus Meinert

引用次数: 0

Compact beam position monitor using a segmented toroidal coil.

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-03-01 DOI: 10.1063/5.0240076

F Abusaif, F Hinder, A Nass, J Pretz, F Rathmann, H Soltner, D Shergelashvili, R Suvarna, F Trinkel

引用次数: 0

Incident beam optics optimization for the single crystal neutron diffractometer Pioneer with a polarized beam option.

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-03-01 DOI: 10.1063/5.0259079

Yaohua Liu, Peter Torres

{"title":"Incident beam optics optimization for the single crystal neutron diffractometer Pioneer with a polarized beam option.","authors":"Yaohua Liu, Peter Torres","doi":"10.1063/5.0259079","DOIUrl":"https://doi.org/10.1063/5.0259079","url":null,"abstract":"Pioneer, a next-generation single-crystal neutron diffractometer, is under development for Oak Ridge National Laboratory's Second Target Station. Designed to address a wide range of scientific questions, Pioneer will deliver homogeneous neutron beams with customizable size and divergence and provide a polarized beam option. This article introduces its incident beam optics, highlighting the optimization methodology and the simulated performance. Pioneer will utilize a modified elliptical-straight guide for neutron transport and deploy slit packages and insertable apertures to control beam size and divergence. The optimized guide geometry matches the optimal-and-full-sample-illumination condition, and the beam control system effectively filters out unwanted neutrons while preserving the desired ones. In addition, we have found that polygon-approximated guides provide satisfactory transport efficiency and beam homogeneity, eliminating the need for truly curved guides. To enhance neutronics performance and reduce cost, the coatings of supermirror elements are individually optimized to the lowest half-integer m-values that are sufficient to deliver the desired neutrons. After evaluating polarizing V-cavities and 3He spin filters over the default polarized wavelength band of 1.2-5.5 Å, we selected a translatable multichannel polarizing V-cavity as the incident beam polarizer. Strategically placed at a location where the beam divergence is low and a large in-guide gap has negligible impact on transport efficiency, the optimized V-cavity achieves an average P2T of ∼35%.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 3","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143650036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Calibration of the lateral spring constant for a custom T-shaped atomic force microscopy probe. 校准定制 T 形原子力显微镜探针的横向弹簧常数。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-03-01 DOI: 10.1063/5.0249211

Zhimu Yang, Rui Xu, Dongchao Zhao, Yifan Li, Wei Yu, Jianli Wang

引用次数: 0

Optical stabilization for laser communication satellite systems through proportional-integral-derivative (PID) control and reinforcement learning approach.

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-03-01 DOI: 10.1063/5.0239029

A Reutov, S Vorobey, A Katanskiy, V Balakirev, R Bakhshaliev, K Barbyshev, V Merzlinkin, V Tekaev

引用次数: 0