Radiation protection analysis of 95 MeV RF electron linac

Dikai Li; Leifeng Cao; [in Chinese]; Zheng Zhou; Qiuhong Chen; Chunhui Zhang; Yanmeng Dai; Jian Yu; Miaomiao Yan; Jialing Deng; Xue Wang; [in Chinese]

doi:10.11884/HPLPB202234.210518

Journals >High Power Laser and Particle Beams >Volume 34 >Issue 6 >Page 064008 > Article

High Power Laser and Particle Beams
Vol. 34, Issue 6, 064008 (2022)

Radiation protection analysis of 95 MeV RF electron linac

Dikai Li^1、2, Leifeng Cao^2、3、*, [in Chinese]⁴, Zheng Zhou⁵, Qiuhong Chen⁶, Chunhui Zhang^2、3, Yanmeng Dai^1、2, Jian Yu^2、3, Miaomiao Yan^2、3, Jialing Deng^2、3, Xue Wang^2、3, and [in Chinese]^1、2、3

Author Affiliations

¹College of Engineering Physics, Shenzhen Technology University, Shenzhen 518118, China

²Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology, Shenzhen Technology University, Shenzhen 518118, China

³Center for Advanced Material Diagnostic Technology, Shenzhen Technology University, Shenzhen 518118, China

⁴Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

⁵Institute of Applied Electronics, CAEP, Mianyang 621900, China

⁶ZhongkeLansheng Radiate Protection Technology Coperation Limited, Foshan 528200, China

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DOI: 10.11884/HPLPB202234.210518 Cite this Article

Dikai Li, Leifeng Cao, [in Chinese], Zheng Zhou, Qiuhong Chen, Chunhui Zhang, Yanmeng Dai, Jian Yu, Miaomiao Yan, Jialing Deng, Xue Wang, [in Chinese]. Radiation protection analysis of 95 MeV RF electron linac[J]. High Power Laser and Particle Beams, 2022, 34(6): 064008 Copy Citation Text

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Fig. 1. Overall geometric modeling of accelerator and surrounding protective shielding wall

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Fig. 2. Engineering drawing of beam dump

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Fig. 3. Dose equivalent distribution produced by the beam moving from the front of the beam dump(horizontal plane)

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Fig. 4. Dose equivalent distribution produced by the beam moving from the front of the beam dump (vertical plane)

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Fig. 5. Dose equivalent distribution, at the height where the concrete thickness of the ceiling is 0.5 m, produced by the beam moving from the front of the beam dump (horizontal plane)

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No.	important position	normalized divergence/ (mm·mrad⁻¹)	geometric divergence/ (mm·mrad⁻¹)	beam size/ mm(rms)	beam size/cm (FWHM)	divergence angle/ mrad	divergence angle/mrad (FWHM)
①	origin point	0.20000	0.02044	0.25000	0.05888	0.08176	0.19254
②	YAG1	0.21551	0.02203	0.23785	0.05601	0.09260	0.21807
③	start of acceleration1	0.24167	0.02470	0.21736	0.05119	0.11363	0.26759
④	end of acceleration1	0.31111	0.00318	0.16296	0.03838	0.01951	0.04595
⑤	YAG2	0.33449	0.00342	0.14465	0.03406	0.02363	0.05566
⑥	start of acceleration 2	0.34213	0.00350	0.13867	0.03266	0.02522	0.05938
⑦	end of acceleration 2	0.41157	0.00221	0.08427	0.01984	0.02627	0.06187
⑧	YAG3	0.42384	0.00228	0.07466	0.01758	0.03054	0.07192
⑨	YAG4	0.44005	0.00237	0.06196	0.01459	0.03820	0.08996
⑩	interaction point	0.50000	0.00269	0.01500	0.00353	0.17930	0.42225
⑪	YAG5	0.50000	0.00269	0.43929	0.10345	0.17930	0.42225
⑫	start of bending magnetic field	0.50000	0.00269	0.48788	0.11489	0.17930	0.42225
⑬	YAG6	0.50000	0.00269	0.62415	0.14699	0.17930	0.42225
⑭	front end of beam dump	0.50000	0.00269	0.79744	0.18780	0.17930	0.42225

Table 1. [in Chinese]

No.	important position	remnant beam/%	normalization parameter	path length/cm	path length after interaction point/cm	beam energy/MeV	γ
①	origin point	100.000	0.00038	0.00	—	5	9.785
②	YAG1	99.962	0.00064	67.00	—	5	9.785
③	start of acceleration1	99.898	0.00170	180.00	—	5	9.785
④	end of acceleration1	99.727	0.00057	480.00	—	50	97.847
⑤	YAG2	99.670	0.00019	581.00	—	50	97.847
⑥	start of acceleration 2	99.651	0.00170	614.00	—	50	97.847
⑦	end of acceleration 2	99.481	0.00030	914.00	—	95	185.91
⑧	YAG3	99.450	0.00040	967.00	—	95	185.91
⑨	YAG4	99.411	0.00147	1037.00	—	95	185.91
⑩	interaction point	99.263	0.00139	1296.00	0.00	95	185.91
⑪	YAG5	99.124	0.00015	1541.00	245.00	95	185.91
⑫	start of bending magnetic field	99.109	0.00043	1568.10	272.10	95	185.91
⑬	YAG6	99.066	0.00055	1644.10	348.10	95	185.91
⑭	front end of beam dump	99.011	0.99011	1740.75	444.75	95	185.91

Table 1. Parameters of beam at important positions

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