Development of double-foil soft X-ray array imaging (DSXAI) diagnostic on HL-2A tokamak
Abstract A 100-channel double-foil soft X-ray array imaging (DSXAI) diagnostic system has been developed for the HL-2A tokamak to obtain tomographic bremsstrahlung emissivity and electron temperature ( T e ). This system employs a double-foil technique to determine T e by comparing the soft X-ray (SXR) emissivities from the same plasma location through two beryllium (Be) foils of differing thickness. The DSXAI system comprises five photocameras mounted at two different poloidal cross-sections, separated toroidally by 15°, allowing for three distinct poloidal viewing angles. Each photocamera features 20 channels, offering a temporal resolution of approximately 4 μs and a spatial resolution of about 8 cm, with no channel overlap. Each photocamera contains two identical optical systems, each defined by an aperture slit and a photodiode array. The double-foil configuration is realized by placing these two optical systems, each with a different Be foil, in close proximity. Initial experimental results demonstrate that the DSXAI diagnostic system performs well, successfully reconstructing 2-dimensional (2D) tomographic SXR emissivity and T e on the HL-2A tokamak. This study provides valuable insights for the future implementation of similar diagnostic systems on fusion reactors like ITER.
Authors
- Zhengwei Wu (ORCID: https://orcid.org/0000-0002-3500-5990)
- Yuhua Huang (ORCID: https://orcid.org/0000-0001-9610-2113)
- Wei Chen (ORCID: https://orcid.org/0000-0002-3120-7608)
- Xingkang Wang (ORCID: https://orcid.org/0000-0001-7780-4494)
- Z. H. Wang (ORCID: https://orcid.org/0000-0003-4805-6401)
- Jie Wu (ORCID: https://orcid.org/0000-0001-9909-1018)
- Yiming Zu (ORCID: https://orcid.org/0000-0002-8879-9018)
- W.L. Zhong (ORCID: https://orcid.org/0000-0001-8217-9400)
- C. Xiao (ORCID: https://orcid.org/0000-0002-1024-6253)
- Zian Wei (ORCID: https://orcid.org/0000-0003-4923-7829)
- Jinlin Xie
- Qilong Dong (ORCID: https://orcid.org/0009-0000-1529-4310)
- Wenzhe Mao (ORCID: https://orcid.org/0000-0002-0676-8462)
- Wandong Liu (ORCID: https://orcid.org/0000-0003-3526-5079)
- Tianxiong Wang (ORCID: https://orcid.org/0000-0002-8134-1418)
- Weixing Ding (ORCID: https://orcid.org/0000-0003-2363-405X)
- Tao Lan (ORCID: https://orcid.org/0000-0002-2785-5178)
- Adi Liu
- Ye Dong (ORCID: https://orcid.org/0000-0003-4662-5623)
- Xiaohui Wen
- Yi Liu
- Sen Zhang (ORCID: https://orcid.org/0000-0002-8010-6045)
- Chen Chen (ORCID: https://orcid.org/0000-0003-0599-0798)
- Pengcheng Lu
- Hairong Wang (ORCID: https://orcid.org/0000-0002-9558-981X)
- Chu Zhou
- Hong Li (ORCID: https://orcid.org/0000-0002-4981-8060)
- G. Zhuang (ORCID: https://orcid.org/0000-0002-6048-8568)
- Lin Nie (ORCID: https://orcid.org/0009-0008-7788-4576)
- Yongkang Zhou (ORCID: https://orcid.org/0000-0001-5722-0432)
- Peng Deng
- Jiaren Wu
- Xuru Duan
- Hangqi Xu
- Zeqi Bai
- Min Xu (ORCID: https://orcid.org/0000-0003-4033-9204)
- Haiyang Zhou
Institutions
- University of Science and Technology of China (CN)
- University of Saskatchewan (CA)
- Southwestern Institute of Physics (CN)
Publication Details
- Journal
- Plasma Science and Technology
- Published
- 2024-12-24
- DOI
- https://doi.org/10.1088/2058-6272/ada343
- Primary Topic
- Fusion materials and technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- China Postdoctoral Science Foundation
- National Magnetic Confinement Fusion Program of China