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1,200 results on '"Li, Shaopeng"'

2. High Q and high gradient performance of the first medium-temperature baking 1.3 GHz cryomodule

Author

Zhai, Jiyuan, Pan, Weimin, He, Feisi, Ge, Rui, Mi, Zhenghui, Sha, Peng, Jin, Song, Han, Ruixiong, Wang, Qunyao, Lin, Haiying, Wang, Guangwei, Li, Mei, Sang, Minjing, Sun, Liangrui, Ye, Rui, Zhao, Tongxian, Li, Shaopeng, Zhu, Keyu, Liu, Baiqi, Wang, Xiaolong, Yang, Xiangchen, Bian, Xiaojuan, Zhang, Xiangzhen, Ma, Huizhou, Dai, Xuwen, Zhang, Zhanjun, Zhang, Liang, Zhao, Hui, Guo, Runbing, Mu, Zhihui, Yang, Conglai, Zheng, Xiaobing, Dong, Chao, Huang, Tongming, Ma, Qiang, Zheng, Hongjuan, Liu, Ming, Wang, Zihan, and Zhou, Wenzhong

Subjects
Physics - Accelerator Physics
Abstract

World's first 1.3 GHz cryomodule containing eight 9-cell superconducting radio-frequency (RF) cavities treated by medium-temperature furnace baking (mid-T bake) was developed, assembled and tested at IHEP for the Dalian Advanced Light Source (DALS) and CEPC R&D. The 9-cell cavities in the cryomodule achieved an unprecedented highest average Q0 of 3.8E10 at 16 MV/m and 3.6E10 at 21 MV/m in the horizontal test. The cryomodule can operate stably up to a total CW RF voltage greater than 191 MV, with an average cavity CW accelerating gradient of more than 23 MV/m. The results significantly exceed the specifications of CEPC, DALS and the other high repetition rate free electron laser facilities (LCLS-II, LCLS-II-HE, SHINE, S3FEL). There is evidence that the mid-T bake cavity may not require fast cool-down or long processing time in the cryomodule. This paper reviews the cryomodule performance and discusses some important issues in cryomodule assembly and testing., Comment: 5 pages, 6 figures

Published
2023

4. Anchor-Intermediate Detector: Decoupling and Coupling Bounding Boxes for Accurate Object Detection

Author

Lv, Yilong, Li, Min, He, Yujie, Li, Shaopeng, He, Zhuzhen, and Yang, Aitao

Subjects
Computer Science - Computer Vision and Pattern Recognition
Abstract

Anchor-based detectors have been continuously developed for object detection. However, the individual anchor box makes it difficult to predict the boundary's offset accurately. Instead of taking each bounding box as a closed individual, we consider using multiple boxes together to get prediction boxes. To this end, this paper proposes the \textbf{Box Decouple-Couple(BDC) strategy} in the inference, which no longer discards the overlapping boxes, but decouples the corner points of these boxes. Then, according to each corner's score, we couple the corner points to select the most accurate corner pairs. To meet the BDC strategy, a simple but novel model is designed named the \textbf{Anchor-Intermediate Detector(AID)}, which contains two head networks, i.e., an anchor-based head and an anchor-free \textbf{Corner-aware head}. The corner-aware head is able to score the corners of each bounding box to facilitate the coupling between corner points. Extensive experiments on MS COCO show that the proposed anchor-intermediate detector respectively outperforms their baseline RetinaNet and GFL method by $\sim$2.4 and $\sim$1.2 AP on the MS COCO test-dev dataset without any bells and whistles. Code is available at: https://github.com/YilongLv/AID., Comment: Submitted 29 September, 2023; originally announced October 2023. Accepted by ICCV2023

Published
2023

17. Thermal performance analysis and cryogenic experimental measurements of the 166.6 MHz cavity cryomodule for the High Energy Photon Source

Author

Han, Ruixiong, Ge, Rui, Zhang, Pei, Zhang, Xiangzhen, Zhao, Tongxian, Sun, Liangrui, Zhang, Xinying, Sang, Minjing, Yang, Xiaochen, Ye, Rui, Guo, Lin, Ma, Qiang, Huang, Tongming, Zhang, Jiehao, Ma, Changcheng, Zhou, Jianrong, Chang, Zhengze, Jiang, Yongcheng, Zhang, Zhuo, Xu, Miaofu, Li, Mei, Zhu, Keyu, and Li, Shaopeng

Published
2025
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35. Preliminary Design of the BEPCII-Upgrade Cryogenic System

Author

Han, Ruixiong, Sun, Liangrui, Xu, Miaofu, Zhang, Jiehao, Yang, Xiaochen, Sang, Minjing, Ye, Rui, Zhang, Zhuo, Li, Penghui, Zhang, Xiangzhen, Zhao, Tongxian, Chang, Zhengze, Li, Mei, Jiang, Yongcheng, Ma, Changcheng, Ge, Rui, Li, Shaopeng, Qiu, Limin, editor, Wang, Kai, editor, and Ma, Yanwei, editor

Published
2023
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37. A Planar Object Tracking Algorithm with Balanced Speed and Accuracy

Author

Li, Shaopeng, Li, Pengxiang, Wen, Suinan, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Dong, Jian, editor, and Zhang, Long, editor

Published
2023
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