TY - CONF AU - He, H.Y. AU - Liu, J.M. AU - Liu, R.H. AU - Song, H. AU - Wang, G.Y. ED - Jaski, Yifei ED - Den Hartog, Patric ED - Jaje, Kelly ED - Schaa, Volker R.W. TI - Design of Remote Helium Mass Spectrometer Leak Detector J2 - Proc. of MEDSI2020, Chicago, IL, USA, 24-29 July 2021 CY - Chicago, IL, USA T2 - Mechanical Engineering Design of Synchrotron Radiation Equipment and Instrumentation T3 - 11 LA - english AB - Leak detection is the key to get a good vacuum system. For the dangerous areas, or facility with complicit structure required to be detected online, it is a hard mask to seek for the suspected leaks one after another. After studying the basic principle of helium mass leak detection, design a remote leak detector based on the PLC, as well as multi monitoring cameras, which can achieve successful injection and sniffer probe leak detection in the range of 270 degree. Compared with the manual operation, this device aims at accurately and reliably detecting leak rate, which can greatly provide technique support of online leak detection. And it can bring the value of reducing the labor intensity and ensuring personal safety. PB - JACoW Publishing CP - Geneva, Switzerland SP - 123 EP - 124 KW - vacuum KW - injection KW - detector KW - controls KW - gun DA - 2021/10 PY - 2021 SN - 2673-5520 SN - 978-3-95450-229-5 DO - doi:10.18429/JACoW-MEDSI2020-TUPA02 UR - https://jacow.org/medsi2020/papers/tupa02.pdf ER - TY - CONF AU - Sheng, W.F. AU - Liang, H. AU - Lu, Y.S. AU - Zhang, Z. ED - Jaski, Yifei ED - Den Hartog, Patric ED - Jaje, Kelly ED - Schaa, Volker R.W. TI - Investigations on Stability Performance of Beamline Optics Supports at BSRF J2 - Proc. of MEDSI2020, Chicago, IL, USA, 24-29 July 2021 CY - Chicago, IL, USA T2 - Mechanical Engineering Design of Synchrotron Radiation Equipment and Instrumentation T3 - 11 LA - english AB - The stability of beamline optics directly affects the beamline’s performances, such as coherence, focal size, position stability of the beam and so on, it has become a serious issue for a low emittance 4th generation light source. The vibration transmitting function of supports plays a big role in the stability performance of the optics. In order to find out a stable supporting structure, several types of support structures were tested, and the transfer ratio were described. The result shows that wedge struc-tures generally have a lower transfer ratio, and point contact support structures should be avoided. PB - JACoW Publishing CP - Geneva, Switzerland SP - 125 EP - 127 KW - optics KW - GUI KW - SRF KW - vacuum KW - site DA - 2021/10 PY - 2021 SN - 2673-5520 SN - 978-3-95450-229-5 DO - doi:10.18429/JACoW-MEDSI2020-TUPA04 UR - https://jacow.org/medsi2020/papers/tupa04.pdf ER - TY - CONF AU - Wang, G.Y. AU - Chen, J.X. AU - He, H.Y. AU - Kang, L. AU - Liu, L. AU - Liu, R.H. AU - Nie, X.J. AU - Ning, C.J. AU - Wang, A.X. AU - Yu, J.B. AU - Yu, Y.J. AU - Zhang, J.S. AU - Zhao, L.Q. AU - Zhu, D.H. ED - Jaski, Yifei ED - Den Hartog, Patric ED - Jaje, Kelly ED - Schaa, Volker R.W. TI - Research on Vibration Stability of SAPS Foundation J2 - Proc. of MEDSI2020, Chicago, IL, USA, 24-29 July 2021 CY - Chicago, IL, USA T2 - Mechanical Engineering Design of Synchrotron Radiation Equipment and Instrumentation T3 - 11 LA - english AB - The construction of the South Advanced Light Source Platform will be completed in 2021. Among them, the high-precision test hall requires that the effective value of the micro-vibration of the foundation be controlled within the vibration range of 25nm, which has already met the requirements of nanometer level. Research at dongguan machinery group, therefore, in view of the high precision testing hall, south of advanced light source is proposed to geological environment factors, carry out detailed geological survey measurement, focus on the advanced light source foundation vibration test, resistance to vibration and vibration characteristics research foundation and anti-vibration scheme research and the advanced light source is the key equipment vibration reduction technology research, through to the light source address of the proposed foundation vibration test, the vibration of foundation design, synchrotron radiation device key equipment comprehensive analysis and research of vibration reduction technology, formed a series of foundation vibration and key equipment solution, for the later construction of the southern light source to lay a solid foundation. PB - JACoW Publishing CP - Geneva, Switzerland SP - 128 EP - 130 KW - photon KW - synchrotron-radiation KW - synchrotron KW - ISOL KW - radiation DA - 2021/10 PY - 2021 SN - 2673-5520 SN - 978-3-95450-229-5 DO - doi:10.18429/JACoW-MEDSI2020-TUPA05 UR - https://jacow.org/medsi2020/papers/tupa05.pdf ER - TY - CONF AU - Liu, R.H. AU - He, H.Y. AU - Kang, L. AU - Ke, Z.Y. AU - Liu, L. AU - Nie, X.J. AU - Ning, C.J. AU - Wang, A.X. AU - Wang, G.Y. AU - Yu, Y.J. AU - Zhang, J.S. AU - Zhu, D.H. ED - Jaski, Yifei ED - Den Hartog, Patric ED - Jaje, Kelly ED - Schaa, Volker R.W. TI - Study the Active Vibration Control System of the Parallel 6-DOF Platform J2 - Proc. of MEDSI2020, Chicago, IL, USA, 24-29 July 2021 CY - Chicago, IL, USA T2 - Mechanical Engineering Design of Synchrotron Radiation Equipment and Instrumentation T3 - 11 LA - english AB - With the development of high-energy synchrotron radiation light source with high energy, high brightness, low emittance and nano-scale light spot, accelerators and beamline stations have higher requirements for the stability of the system, and active vibration isolation technology has been paid more and more attention. It has become the key technology for the development of major scientific devices (such as high-energy synchrotron radiation light source, free electron laser, etc.) in the future. In this paper, an active vibration control system driven by piezoelectric ceramic actuator with strong adaptability is designed. NI Compact-RIO real-time control system and Fx-LMS adaptive filter control algorithm are used for the active vibration control system. The identification method of input and output channels and the active control module are simulated by MATLAB. And an active vibration control system based on a parallel 6-DOF platform was built for experimental verification. The experimental results show that the designed active vibration control system has a good control effect for low-frequency micro-vibration. PB - JACoW Publishing CP - Geneva, Switzerland SP - 131 EP - 134 KW - controls KW - experiment KW - damping KW - software KW - synchrotron DA - 2021/10 PY - 2021 SN - 2673-5520 SN - 978-3-95450-229-5 DO - doi:10.18429/JACoW-MEDSI2020-TUPA06 UR - https://jacow.org/medsi2020/papers/tupa06.pdf ER - TY - CONF AU - Liang, H. AU - Sheng, W.F. AU - Shi, H. AU - Yang, Y.M. AU - Zheng, L.R. ED - Jaski, Yifei ED - Den Hartog, Patric ED - Jaje, Kelly ED - Schaa, Volker R.W. TI - Performance of a Double Crystal Monochromator Prototype for HEPS under Water Cooling Condition at a Wiggler Beamline of BSRF J2 - Proc. of MEDSI2020, Chicago, IL, USA, 24-29 July 2021 CY - Chicago, IL, USA T2 - Mechanical Engineering Design of Synchrotron Radiation Equipment and Instrumentation T3 - 11 LA - english AB - The performance of monochromator is crucial to the performance of a beamline, especially for a 4th genera-tion synchrotron light source. To find out the perfor-mance of the monochromator prototype built for the HEPS project, it was tested at a wiggler beamline of BSRF with water cooling. The cooling of the crystals was measured by rocking curve broadening at different energy and cooling seems to be not enough due to indium foils. The repeatability in 1 hour was about 0.1 eV. The energy drift in 9 hours after the beam hit the beam-line was 0.4 eV at the Cu K edge. The short-term stability was tested with synchrotron beam under various cooling condition, and results between 4.4 nrad to around 400 nrad were observed. In conclusion, some performances are satisfying, but further improvements should be carried out in the future. PB - JACoW Publishing CP - Geneva, Switzerland SP - 135 EP - 137 KW - SRF KW - synchrotron KW - experiment KW - wiggler KW - hardware DA - 2021/10 PY - 2021 SN - 2673-5520 SN - 978-3-95450-229-5 DO - doi:10.18429/JACoW-MEDSI2020-TUPA08 UR - https://jacow.org/medsi2020/papers/tupa08.pdf ER - TY - CONF AU - Yan, F. AU - Jing, X.P. AU - Lin, G.P. AU - Lu, A.Z. AU - Qiu, J. AU - Xing, Y.L. AU - Xu, G. AU - Xu, Z.G. AU - Zhang, Y.S. AU - Zhou, N.C. ED - Jaski, Yifei ED - Den Hartog, Patric ED - Jaje, Kelly ED - Schaa, Volker R.W. TI - The Design and Prototype Test for the Tunnel Foundation of High Energy Photon Source J2 - Proc. of MEDSI2020, Chicago, IL, USA, 24-29 July 2021 CY - Chicago, IL, USA T2 - Mechanical Engineering Design of Synchrotron Radiation Equipment and Instrumentation T3 - 11 LA - english AB - High Energy Photon Source (HEPS) is being built in China with challenging beam stability requirements. To fulfil the 25 nm ground motion restriction on the storage ring tunnel slab, two prototype slabs with different design schemes were constructed on the HEPS site. The first scheme adopted a 1 m reinforced concrete with replace-ment layer of a 1 m sand & stone underneath. The second scheme employed an extra 5 m grouting layer below the previously mentioned two layers. A series of tests had been carried out. The prototype slab with grouting layer is testified to have comparable vibration level with the bare ground, which is under 25 nm without traffic inside the HEPS campus, while the vibration level is amplified a lot on the other prototype slab. However, it is hard to make the grouting layer homogeneously under the kilo-metre-scale tunnel and besides the cost is unacceptable for 5 m grouting with such a large scale. The finalized design is fixed to be a 1 m reinforced concrete slab and 3 m replacement layer underneath using plain concrete. In this paper, the details of the prototype slab test results will be presented. PB - JACoW Publishing CP - Geneva, Switzerland SP - 141 EP - 144 KW - storage-ring KW - ground-motion KW - site KW - photon KW - emittance DA - 2021/10 PY - 2021 SN - 2673-5520 SN - 978-3-95450-229-5 DO - doi:10.18429/JACoW-MEDSI2020-TUPA12 UR - https://jacow.org/medsi2020/papers/tupa12.pdf ER - TY - CONF AU - Nie, X.J. AU - Chen, J.X. AU - He, H.Y. AU - Kang, L. AU - Liu, L. AU - Liu, R.H. AU - Ning, C.J. AU - Tian, S.K. AU - Wang, A.X. AU - Wang, G.Y. AU - Yu, J.B. AU - Yu, Y.J. AU - Zhang, J.S. AU - Zhu, D.H. ED - Jaski, Yifei ED - Den Hartog, Patric ED - Jaje, Kelly ED - Schaa, Volker R.W. TI - Research of Bellow Shield Structure Applied to BPM J2 - Proc. of MEDSI2020, Chicago, IL, USA, 24-29 July 2021 CY - Chicago, IL, USA T2 - Mechanical Engineering Design of Synchrotron Radiation Equipment and Instrumentation T3 - 11 LA - english AB - The design of shield structure for bellow is an im-portant content for the research of beam position monitor (BPM). The bellow shield structure consists of contact fingers and spring fingers. Several alternative schemes for bellow shield were achieved based on BPM detailed structure. The optimal scheme was achieved by the im-pedance simulation analysis with CST. The dimension of the contact finger was decided based on the length of BPM with the stress condition. The C-type string was manufactured and the spring force was measured as well. PB - JACoW Publishing CP - Geneva, Switzerland SP - 145 EP - 147 KW - impedance KW - vacuum KW - shielding KW - simulation KW - ECR DA - 2021/10 PY - 2021 SN - 2673-5520 SN - 978-3-95450-229-5 DO - doi:10.18429/JACoW-MEDSI2020-TUPA13 UR - https://jacow.org/medsi2020/papers/tupa13.pdf ER - TY - CONF AU - Yu, J.B. AU - Chen, J.X. AU - He, H.Y. AU - Kang, L. AU - Liu, L. AU - Liu, R.H. AU - Nie, X.J. AU - Ning, C.J. AU - Wang, A.X. AU - Wang, G.Y. AU - Yu, Y.J. AU - Zhang, J.S. AU - Zhu, D.H. ED - Jaski, Yifei ED - Den Hartog, Patric ED - Jaje, Kelly ED - Schaa, Volker R.W. TI - Processing of HEPS Low Energy Transport Line Collimator J2 - Proc. of MEDSI2020, Chicago, IL, USA, 24-29 July 2021 CY - Chicago, IL, USA T2 - Mechanical Engineering Design of Synchrotron Radiation Equipment and Instrumentation T3 - 11 LA - english AB - In order to protect the equipment such as BPM at low energy transport line (LB), a momentum collimator is designed with one movable absorber. This paper will show the mechanical design and manufacturing of the collimator. PB - JACoW Publishing CP - Geneva, Switzerland SP - 148 EP - 149 KW - vacuum KW - booster KW - linac KW - status KW - gun DA - 2021/10 PY - 2021 SN - 2673-5520 SN - 978-3-95450-229-5 DO - doi:10.18429/JACoW-MEDSI2020-TUPA15 UR - https://jacow.org/medsi2020/papers/tupa15.pdf ER -