| Paper | Title | Page |
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| TUPYP022 | The Development and Application of Motion Control System for HEPS Beamline | 61 |
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| In synchrotron radiation facilities such as the High Energy Photon Source (HEPS) beamline, thousands of motorized actuators are equipped on different optical devices, such as K-B mirrors, monochromator and transfocators, in order to acquire the specified properties of X-ray. The motion control system, as a part of the ultra-precision mechatronics devices, is used to precison positioning control, which not only has ability to realize basic motion functions but also can handle complex motion control requirements. HEPS has developed a standardized motion control system(MCS) for synchrotron radiation applications. In this paper, The structure of hardware and software of MCS will be presented, and some applications are demonstrated in detail. | ||
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Poster TUPYP022 [0.847 MB] | |
| DOI • | reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-TUPYP022 | |
| About • | Received ※ 30 October 2023 — Revised ※ 03 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 12 April 2024 | |
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TUPYP034 |
A New Design of X-ray White Beam Profile Monitor for HEPS Beamlines | |
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| The development of x-ray white beam profile monitor is to realize the visual detection of beam contour and position under the condition of high energy and high heat load of HEPS fourth-generation light source. The device includes a electric drive system, an imaging system, and a copper-cooled CVD diamond monitor. SPECTRA and ANSYS were used to verify the mechanism temperature reliability when monitor being used in different HEPS beamlines at current of 200 mA. At the same time, the functional verification of the experimental prototype was carried out on the 3W1 high energy test beamline of BSRF, white beam fluorescence images were successfully obtained. During the test of Multilayer Monochromator for Structural Dvnamics Beamline(HEPS), the change images of white and monochromatic beam profiles and curve of intensity distribution during crystal adjustment are successfully obtained, which verificates the processing function of the monitor for beam profile and intensity distribution. | ||
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TUPYP036 |
Mechanical Design of Water-cooled Slits System at HEPS | |
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| The fourth generation synchrotron radiation light source currently under construction in China has the characteristics of high energy and high brightness. High Energy Photon Source(HEPS) can be used in many basic and engineering research fields, so different spot sizes are modulated for different research needs. This design is a rotary water-cooled white beam slit system, which mainly includes absorber parts and driving mechanism. On the premise of ensuring the integrity of the absorber, the aperture is processed inside the absorber, and the absorber is rotated by the driving mechanism, so as to realize the adjustment of the aperture of the slit. The system has the characteristics of compact structure, high yield and simple processing, and can achieve the same performance index while saving time and space costs. At present, the function of the experimental prototype has been verified on the 3W1 high energy test beam line of BSRF, and the spot size can be adjusted. | ||
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| TUPYP039 | A Design of an X-ray Monochromatic Adjustable Slit for HEPS Beamlines | 88 |
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| The monochromatic slit is a commonly used device in HEPS beamlines. It can limit the synchrotron beam-spot within a desired size required by the downstream optical equipment. In addition, the four-blade structure is the most widely used form of slit. The slit with this form usually consists of a pair or two parallel tungsten carbide blades. With their edges close to each other, a slit can be formed, and the size of which can be controlled by micromechanical guides. This structure is very suitable for the case of large beamsize. In this work, we have designed a monochromatic slit based on the four-blade form for BF-beamline in HEPS. It can be used in ultra-high vacuum, high luminous flux working environment. The maximum opening range is up to 30mm*10mm (H*V), while it can allow a white beam of 136mm*24mm (H*V) to pass through. Furthermore, we adopted a point to surface contact design, which can effectively avoid the over-constraint problem between two guide rails. | ||
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Poster TUPYP039 [0.457 MB] | |
| DOI • | reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-TUPYP039 | |
| About • | Received ※ 10 November 2023 — Revised ※ 10 November 2023 — Accepted ※ 10 November 2023 — Issued ※ 18 July 2024 | |
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| WEOBM07 | Design, Modeling and Analysis of a Novel Piezoactuated XY Nanopositioner Supporting Beamline Optical Scanning | 150 |
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| In recent years, with the advancement of X-ray optics technology, the spot size of synchrotron beamlines has been reduced to 10nm or even smaller. The reduction in spot size and the emergence of ultra-bright synchrotron sources necessitate higher stability, resolution, and faster scanning speeds for positioning systems. This paper presents the design, analysis, and simulation of an XY piezoelectric driven nanopositioning platform that supports high-precision optical scanning systems. To achieve fast and highly precise motion under the load of an optical system, a design scheme based on a hollow structure with flexible amplification and guiding mechanisms is proposed. This scheme increases displacement output while minimizing coupling displacement to ensure a high natural frequency. The rationality of this platform design is verified through modeling and finite element simulation. | ||
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Slides WEOBM07 [3.448 MB] | |
| DOI • | reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEOBM07 | |
| About • | Received ※ 02 November 2023 — Revised ※ 03 November 2023 — Accepted ※ 04 November 2023 — Issued ※ 18 April 2024 | |
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THOBM03 |
Progress and Core Technologies Development of Monochromators for HEPS | |
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| HEPS is the first low emittance 4th generation light source in China, as monochromators are often limiting the performance of beamlines, many challenges are faced to preserve the quality of the beam. In order to meet the stringent and versatile requirements of 12 in house developed monochromators for different beamlines, several core technologies have been studied and developed. Stability considerations, vibration measurement system and methods are introduced, stability below 10 nrad RMS are measured for operation conditions by laser interferometers. Thermal resistance study at low temperature was carried out, enabling more accurate FEA of cooling. Clamping deformation of crystals at low temperature are experimentally studied, slope errors below 0.1 microradian RMS are measured. Design and test results on different types of monochromators will also be presented. Results show that the in house developed monochromators are able to meet the requirements of HEPS beamlines. | ||
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Slides THOBM03 [8.445 MB] | |
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