IPAC2017 - List of Authors (Wang, Z.)

Paper	Title	Page
MOPAB087	Study on Supports System of BPMs for HEPs	322
SUSPSIK077	use link to see paper's listing under its alternate paper code
	Z.Z. Wang, J.S. Cao, J. He, H.Z. Ma, Y.F. Sui, Z. Wang IHEP, Beijing, People's Republic of China
	The High Energy Photon Source(HEPS), a third generation light source with the energy of 6 GeV, is under constructed at IHEP. It has an ultralow emittance (~50pm.rad) and small beam size, thus the requirement of BPM in precision and resolution is quite high. Independent supports with high degree of mechanical and thermal stability will be employed for some special BPMs, such as the BPMs near the insert devices. The supports should have high eigen-frequencies to minimize the amplification of vibration from the ground. Vibrations information of the ground around the supports also need be estimated, with which FEA (finite element analysis) had be utilized to simulate the performance of the supports. Measurements of vibrational stability of the prototype supports have be done and compared with the simulation.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-MOPAB087
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TUPIK067	Online Monitoring of the ADS Test Cryostat Cold Mass With WPM	1848
	H.Y. Zhu Institute of High Energy Physics (IHEP), People's Republic of China L. Dong, L.L. Men, Z. Wang IHEP, Beijing, People's Republic of China B. Li CSNS, Guangdong Province, People's Republic of China
	Superconducting devices in particle accelerator demand strict operating environment: cryostat with ultra high vacuum and almost absolute zero temperature 2K-4K. This brings a big problem to survey and alignment work: how to preserve the magnets alignment precision in the cryostat, especially after such a big range temperature change. The complicate structure of magnet girder and cryogenic pipes make it difficult to do precise contraction simulation. So wire position monitor (WPM) is designed to measure the device contraction in cryomodule. Accelerator Driven System (ADS) Injector-I is a proton Linac, WPM system was assembled in its first cyomodule TCM. WPM is precisely calibrated, assembled at the same height as magnets. System noise, contraction stability and repeatability are analyzed in detail. Contraction coefficient of girder system is calculated by contraction data and temperature data, the result matches with the thermal coefficient of stainless steel very well. After commissioning, two thermal cycles were recorded, average contraction value was 1.35mm. The commissioning data shows about 0.2mm contraction difference with the same girder structure.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK067
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THPVA048	Design and Progress on Mechanical & Alignment System for HEPS-TF	4544
	C. H. Li, S.J. Li, J. Liu, H. Wang, X.L. Wang, Z. Wang, L. Wu IHEP, Beijing, People's Republic of China
	HEPS is a new generation synchrotron facility with a stringent requirement of very low emmittance. The key technology difficulties are supposed be overcome during the HEPS-TF stage. There are two projects in progress for mechanical and alignment system. One is the development of precision auto-tuning magnet girder, to meet the requirement of beam based alignment in tunnel, the other is the study on vibrating-wire alignment technique to improve alignment accuracy of magnets on a girder. This paper will describe the design and progress of both projects.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA048
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THPVA050	Latest Progress of Magnet Girder Prototypes for HEPS-TF	4551
	H. Wang, C. H. Li, S.J. Li, H. Qu, Z. Wang, L. Wu IHEP, Beijing, People's Republic of China
	The magnet girder technology is one of the key tech-nologies which should be overcome in the stage of HEPS-TF (Test Facility of High Energy Photon Source). The girder should be beam-based aligned, and must has high adjusting precision and high stability as well. For these issues, two girder systems are designed and developed. This paper will describe the latest progress of the girder prototypes, including structure design updates, control system progress, and processing and assembling of Girder I prototype.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA050
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THPVA051	Vibration Study of Magnet Girder of the HEPS-TF	4554
SUSPSIK114	use link to see paper's listing under its alternate paper code
	Z. Wang, C. H. Li, H. Qu, H. Wang IHEP, Beijing, People's Republic of China
	Abstract: There are stringent requirements on beam stability in the High Energy Photon Source (HEPS). The stability of the magnet girder is an extremely important factor for the beam stability. This paper will discuss the influence of ground vibration to the beam stability. This influence will determine the scope of the vibration magnification of the magnet girder. By improving the stiffness of the magnet girder, the influence will be reduced and the beam stability shall be improved. Besides, the progress of the HEPS-TF girder prototype and the vibration test will be described.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA051
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THPVA052	Preliminary Design of Magnet Support System for CEPC	4557
	H. Wang, H. Qu, J.L. Wang, Z. Wang, N. Zhou IHEP, Beijing, People's Republic of China
	Magnet support system is important for CEPC. For the 100 km design of CEPC, there will be thousands of mag-nets and their supports in both collider and booster. Espe-cially, the booster ring is above the collider in the space, the magnets are hung by the supports. The goals of mag-net supports are simple and flexible structure, minimizing the magnet deformation, good stability, low cost and so on. This paper will describe the preliminary design of magnet support system, the optimization to minimize the magnet deformation and the topology optimization of the frame structure in booster.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA052
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THPVA053	Design of the Girder Control System for HEPS-TF	4560
	S.J. Li, C. H. Li, J. Liu, H. Wang, Z. Wang IHEP, Beijing, People's Republic of China
	To make the alignment become easier, the HEPS-TF (High Energy Photon Source-Test Facility) magnet girder, which is different from the conventional one, is designed to achieve the goal of adjusting the girder's position and orientation online. The control system is one of the key sub-part. This Paper will describe the control system design, especially on the hardware configuration, software programming as well as user interface design.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA053
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

MOPAB087

Study on Supports System of BPMs for HEPs

322

SUSPSIK077

use link to see paper's listing under its alternate paper code

Z.Z. Wang, J.S. Cao, J. He, H.Z. Ma, Y.F. Sui, Z. Wang
IHEP, Beijing, People's Republic of China

The High Energy Photon Source(HEPS), a third generation light source with the energy of 6 GeV, is under constructed at IHEP. It has an ultralow emittance (~50pm.rad) and small beam size, thus the requirement of BPM in precision and resolution is quite high. Independent supports with high degree of mechanical and thermal stability will be employed for some special BPMs, such as the BPMs near the insert devices. The supports should have high eigen-frequencies to minimize the amplification of vibration from the ground. Vibrations information of the ground around the supports also need be estimated, with which FEA (finite element analysis) had be utilized to simulate the performance of the supports. Measurements of vibrational stability of the prototype supports have be done and compared with the simulation.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-MOPAB087

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPIK067

Online Monitoring of the ADS Test Cryostat Cold Mass With WPM

1848

H.Y. Zhu
Institute of High Energy Physics (IHEP), People's Republic of China
L. Dong, L.L. Men, Z. Wang
IHEP, Beijing, People's Republic of China
B. Li
CSNS, Guangdong Province, People's Republic of China

Superconducting devices in particle accelerator demand strict operating environment: cryostat with ultra high vacuum and almost absolute zero temperature 2K-4K. This brings a big problem to survey and alignment work: how to preserve the magnets alignment precision in the cryostat, especially after such a big range temperature change. The complicate structure of magnet girder and cryogenic pipes make it difficult to do precise contraction simulation. So wire position monitor (WPM) is designed to measure the device contraction in cryomodule. Accelerator Driven System (ADS) Injector-I is a proton Linac, WPM system was assembled in its first cyomodule TCM. WPM is precisely calibrated, assembled at the same height as magnets. System noise, contraction stability and repeatability are analyzed in detail. Contraction coefficient of girder system is calculated by contraction data and temperature data, the result matches with the thermal coefficient of stainless steel very well. After commissioning, two thermal cycles were recorded, average contraction value was 1.35mm. The commissioning data shows about 0.2mm contraction difference with the same girder structure.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK067

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPVA048

Design and Progress on Mechanical & Alignment System for HEPS-TF

4544

C. H. Li, S.J. Li, J. Liu, H. Wang, X.L. Wang, Z. Wang, L. Wu
IHEP, Beijing, People's Republic of China

HEPS is a new generation synchrotron facility with a stringent requirement of very low emmittance. The key technology difficulties are supposed be overcome during the HEPS-TF stage. There are two projects in progress for mechanical and alignment system. One is the development of precision auto-tuning magnet girder, to meet the requirement of beam based alignment in tunnel, the other is the study on vibrating-wire alignment technique to improve alignment accuracy of magnets on a girder. This paper will describe the design and progress of both projects.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA048

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPVA050

Latest Progress of Magnet Girder Prototypes for HEPS-TF

4551

H. Wang, C. H. Li, S.J. Li, H. Qu, Z. Wang, L. Wu
IHEP, Beijing, People's Republic of China

The magnet girder technology is one of the key tech-nologies which should be overcome in the stage of HEPS-TF (Test Facility of High Energy Photon Source). The girder should be beam-based aligned, and must has high adjusting precision and high stability as well. For these issues, two girder systems are designed and developed. This paper will describe the latest progress of the girder prototypes, including structure design updates, control system progress, and processing and assembling of Girder I prototype.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA050

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPVA051

Vibration Study of Magnet Girder of the HEPS-TF

4554

SUSPSIK114

use link to see paper's listing under its alternate paper code

Z. Wang, C. H. Li, H. Qu, H. Wang
IHEP, Beijing, People's Republic of China

Abstract: There are stringent requirements on beam stability in the High Energy Photon Source (HEPS). The stability of the magnet girder is an extremely important factor for the beam stability. This paper will discuss the influence of ground vibration to the beam stability. This influence will determine the scope of the vibration magnification of the magnet girder. By improving the stiffness of the magnet girder, the influence will be reduced and the beam stability shall be improved. Besides, the progress of the HEPS-TF girder prototype and the vibration test will be described.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA051

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPVA052

Preliminary Design of Magnet Support System for CEPC

4557

H. Wang, H. Qu, J.L. Wang, Z. Wang, N. Zhou
IHEP, Beijing, People's Republic of China

Magnet support system is important for CEPC. For the 100 km design of CEPC, there will be thousands of mag-nets and their supports in both collider and booster. Espe-cially, the booster ring is above the collider in the space, the magnets are hung by the supports. The goals of mag-net supports are simple and flexible structure, minimizing the magnet deformation, good stability, low cost and so on. This paper will describe the preliminary design of magnet support system, the optimization to minimize the magnet deformation and the topology optimization of the frame structure in booster.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA052

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPVA053

Design of the Girder Control System for HEPS-TF

4560

S.J. Li, C. H. Li, J. Liu, H. Wang, Z. Wang
IHEP, Beijing, People's Republic of China

To make the alignment become easier, the HEPS-TF (High Energy Photon Source-Test Facility) magnet girder, which is different from the conventional one, is designed to achieve the goal of adjusting the girder's position and orientation online. The control system is one of the key sub-part. This Paper will describe the control system design, especially on the hardware configuration, software programming as well as user interface design.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA053

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)