NAC応物別冊89

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2B-a1 Simulation of pulsed field magnetization on HTSC bulk using vortex-coil FUJISHIRO Hiroyuki, OYAMA Mitsuru, NAITO Tomoyuki (Iwate Univ.) (E-mail: fujishiro@iwate-u.ac.

(OD=62 mm) solenoid-coil (ID=82 mmod=116 mm H=5 mm) [4]() EDDY- THERMO E-J n Jc (1) Kim =4.6x1 8 A/m 2 Tc=92 K J c (T,B) 1 T 2 2 B T c B B 3 =4.6x1 8 A/m 2 J c (4 K, T)=3.3 x 1 8 A/m 2 Bex(t)=.

1 2B-a1 Simulation of pulsed field magnetization on HTSC bulk using vortex-coil FUJISHIRO Hiroyuki, OYAMA Mitsuru, NAITO Tomoyuki (Iwate Univ.) ( - solenoid-coil [1,2] (vortex-coil) solenoid-coil [3] vortex-coil solenoid-coil vortex-coil solenoid-coil vortex-coil (ID=4 mm, H=35 mm) Ts=4 K (45 mm, t15 mm) vortex-coils-coil (OD=3 mm) L-coil (OD=62 mm) solenoid-coil (ID=82 mmod=116 mm H=5 mm) [4]() EDDY- THERMO E-J n Jc (1) Kim =4.6x1 8 A/m 2 Tc=92 K J c (T,B) 1 T 2 2 B T c B B 3 =4.6x1 8 A/m 2 J c (4 K, T)=3.3 x 1 8 A/m 2 Bex(t)=.1 s Bex Bz(r=) solenoid-coil 4 T 6 T Bz(r=)=1.7 T vortex S-coil 2 T Bex=9 T Bz(r=)=2.6 T vortex L-coil solenoid-coil [3] Bex=4 T vortex S-coil solenoid-coil (a) vortex S-coil (b) solenoid-coil r=13 mm Bex (1) vortex-coil [1] [3D-a8] [2] H. Fujishiro et al., Supercond. Sci. Tech. 23 (21) 1521 [3] T. Ida et al., Physica C (24) 638 [4] Y. Komi, H. Ohsaki et al., Physica C 469 (29) 1262 Fig. 1. The experimental setup for the pulsed field magnetization using the vortex-coil and the solenoid coil. 3 B z (r=) (T) 2 z bulk 23 r 1 T s =4 K vortex S-coil vortex L-coil solenoid coil B (T) ex Fig. 2. The simulation of the applied field dependence of trapped field Bz(r=) at 4 K at the center of the bulk surface for vortex-coils (S-coil, L-coil) and the solenoid coil. z (a) vortex S-coil (b) solenoid coil Fig. 3. The cross section of the magnetic flux distribution in the bulk magnetized using (a) vortex S-coil and (b) solenoid-coil after applying magnetic pulse of Bex=4 T at 4 K. z 23 r 23 r 157

2B-a2 Jc J c distribution and trapped field distribution by pulsed field magnetization in superconducting bulk The comparison with trapped field distribution by zero-field

2 6 K Bulk-B (a) PFM (b) ZFC PFM ZFC Fig. 2 Fig. 1 PFMZFC PFM ZFC F c J c [1] T.Miura, et al. Abstracts of CSJ Conference, Vol.

T12 ms 1 mm ZFC T s =6~77K.5~4. T; 3.7 mt/s 3 mm Fig. 1 Trapped field distribution of the bulk-a-1-1 at 6 K magnetized by (a) PFM (B ex =1.3T) and (b) ZFC (B ex =.

2 2B-a2 Jc J c distribution and trapped field distribution by pulsed field magnetization in superconducting bulk The comparison with trapped field distribution by zero-field cooling ARAYASHIKI Takahiro, FURUTA Daiki, NAITO Tomoyuki, FUJISHIRO Hiroyuki (Iwate Univ.) ; fujisiro@iwate-u.au.jp J c (FCM) (ZFC) (PFM) PFM ZFC ZFC F p (a) (b) Fig. 2 6 K Bulk-B (a) PFM (b) ZFC PFM ZFC Fig. 2 Fig. 1 PFMZFC PFM ZFC F c J c [1] T.Miura, et al. Abstracts of CSJ Conference, Vol. 81 (29) [1P-p1] GdBulk-A 3 A-1 A-2 A-3A-1 2 T s =6 K, B ex =1.3 T (PFM) (a) T s =6 K, B ex =.5 T (ZFC) (b) A-1-1 A-1-2GdBulk-B 22 mmt; ISTEC ZFC PFM T s =4~77K B ex =2.~6. T12 ms 1 mm ZFC T s =6~77K.5~4. T; 3.7 mt/s 3 mm Fig. 1 Trapped field distribution of the bulk-a-1-1 at 6 K magnetized by (a) PFM (B ex =1.3T) and (b) ZFC (B ex =.5 T) T s =6 K, B ex =3.5 T (PFM) (a) 1 mm up 3 mm up T s =6 K, B ex =2. T (ZFC) (b) Fig. 1 6 K A-1-1 (a) PFM(b) ZFC (a) (b) 1 mm up 3 mm up Fig. 2 Trapped field distribution of the bulk-b at 6 K magnetized by (a) PFM (B ex =3.5T) and (b) ZFC (B ex =2. T) 158

2B-a3 J c distribution and trapped field distribution by pulsed field magnetization in superconducting bulk - The comparison

) E-mail: furuta429@yahoo.co.jp 29 () 45 18 Gd 3 1 J c J c [1] T. Miura, et al. Abstracts of CSJ Conference,Vol.

1(a) A,B,C-line 1 1 2 mm 3 SQUID 77 K 5 K 5 T (a) A B C (c) (b) (d) Fig.

1 T s =4 K B ex =1.3 T B ex =1.6 T ((a),(c)) ((b),(d))b ex =1.3 T B ex =1.6 T A,B,C-line Fig.

3 2B-a3 J c distribution and trapped field distribution by pulsed field magnetization in superconducting bulk - The comparison with direct measurement of J c - FURUTA Daiki, ARAYASHIKI Takahiro, NAITO Tomoyuki, FUJISHIRO Hiroyuki (Iwate Univ.) furuta429@yahoo.co.jp 29 () Gd 3 1 J c J c [1] T. Miura, et al. Abstracts of CSJ Conference,Vol. 81 (29) [1P-p1] 1 A 2 mm B C J c J c (45 mm 2 mm) T s =4~6 K B ex =.9~1.6 T 1. mm Fig. 1(a) A,B,C-line mm 3 SQUID 77 K 5 K 5 T (a) A B C (c) (b) (d) Fig. 1 Trapped field distribution after applying pulsed field of 1.3 T and 1.6 T at 4 K and these cross sections along Fig. 1 T s =4 K B ex =1.3 T B ex =1.6 T ((a),(c)) ((b),(d))b ex =1.3 T B ex =1.6 T A,B,C-line Fig. 2 T s =5 K 3 T J c (5 K, 3 T) A,B-line J c C-line GSB line X=-8 mm J c A,B,C-line J c GSB A,B,C-lines. (a),(b) B ex =1.3 T (c),(d) B ex =1.6 T Fig. 1 J c Fig. 2 Critical current density J c distribution estimated by the magnetization method along X axis at 5 K. (B ex =3 T) 159

2B-a4 RE123 Effects of Post-Annealing under Reducing Atmospheres on Superconducting Properties of RE123 Melt-Solidified Bulks AKASAKA Tomoyuki, SHIMOYAMA Jun-ichi, KINEMURA Yohei, YAMAMOTO Akiyasu,

4 2B-a4 RE123 Effects of Post-Annealing under Reducing Atmospheres on Superconducting Properties of RE123 Melt-Solidified Bulks AKASAKA Tomoyuki, SHIMOYAMA Jun-ichi, KINEMURA Yohei, YAMAMOTO Akiyasu, OGINO Hiraku, KISHIO Kohji(Univ. of Tokyo) tt96638@mail.ecc.u-tokyo.ac.jp REBa 2 Cu 3 O y (RE123) T c J c RE Ba [1] RE Y123 T c J c [2] Gd123, Dy123, Ho123 RE123 Dy123, Ho123 RE123 RE 2 BaCuO 5 (RE211) 7 : 3.5 wt% Pt 2 mm 1 mm t Nd123 a-growth c-growth 2 mm2 mm1 mm t P O2 =.1 atm 85C 45C 64.5 mm 2 mm t Gd123 ( : ) SQUID Fig. 1 Dy123, Ho123, Y123 a-growth 2, 4, 6 mm T c T c RE211 RE Ba T c Ba RE RE T c RE Fig. 2 Gd K F p, max F p, max P O2.1 atm F p, max Fig. 1 T c of small pieces cut from various parts of Dy, Ho, Y123 melt-solidified bulks with and without annealing process under reducing atmospheres. Fig. 2 F p,max of Gd123 melt-solidified bulks without and with annealing process under various temperature and reducing atmospheres. [1] J. Shimoyama et al., Abstracts of CSJ Conference, vol. 8 (29) p.19 [2] T. Akasaka et al., Abstracts of CSJ Conference, vol. 82 (21) p.21 16

2B-a5 KINEMURA Yohei, AKASAKA Tomoyuki, SHIMOYAMA Jun-ichi, YAMAMOTO Akiyasu, OGINO Hiraku and KISHIO Kohji (Univ. of Tokyo) E-mail : tt16658@mail.ecc.u-tokyo.ac.

1 T c of undoped, Co- and Ga-doped Y123 melt solidified bulks determined by susceptibility measurements. CuO Cu Co Ga 1.5 mol Y123 Y211 Y123Y211 = 73 Pt.

5 2B-a5 KINEMURA Yohei, AKASAKA Tomoyuki, SHIMOYAMA Jun-ichi, YAMAMOTO Akiyasu, OGINO Hiraku and KISHIO Kohji (Univ. of Tokyo) tt16658@mail.ecc.u-tokyo.ac.jp RE123(REBa 2 Cu 3 O y ) RE211 RE Ba [1,2]CuO Cu Fe, Co, Ga CuO 2 CuO 2 T c J c [2] RE123 Co Ga Y123 T c Co Ga J c onset Fig. 1 T c of undoped, Co- and Ga-doped Y123 melt solidified bulks determined by susceptibility measurements. CuO Cu Co Ga 1.5 mol Y123 Y211 Y123Y211 = 73 Pt.5 wt%(1 ton / cm 2 ) 2 mm1 mm t 26 mm21 mm t Nd C a-growth region c-growth region 2 mm2 mm1 mm SQUID 77 K.5 mm (a) (b) 77 K H // c 77 K H // c Co Ga 1.5 Y123 Co Ga CuO 2 Fig. 1 T c a-growth regionc-growth region Co Ga J c Fig K Ga 1.5% Y mm18 mm t Co1.5%.47 TGa1.5%.58 T.38 T Fig. 2 Trapping field distribution of Y123 melt solidified bulks at 77 K. (a):undoped, (b):ga1.5% doped [1] J. Shimoyama et al.,ieee Trans. Appl. Supercond. 15 (25) [2] Y. Ishii et al., Appl. Phys. Lett. 89 (26)

6 2B-a6 酸化物バルク (1) ᛶ Ꮚῧຍ䛻䜘䜛㻳㼐 ᡂ㛗䝞䝹䜽㟁ᑟయ䛾 ᤕᤊ ᮰ቑ 䛻㛵䛩䜛㻱㼚㼔㼍㼚㼏㼑㼙㼑㼚㼠㼛㼒㼠㼔㼑㼠㼞㼍㼜㼜㼑㼐㼙㼍㼓㼚㼑㼠㼕㼏㼒㼘㼡㼤㼕㼚㻳㼐㻝㻞㻟㼎㼡㼘㼗㼟㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼛㼞㼟 4 2 JC (1 A/cm ) 㒔 ኴ䠈ཎ ❶ 䠈 ᮌ ᇶᐶ䠈䝣䜵䝹䝎䞊䝤䝸䞊䝇䠈㒭䠈 Ἠ 䠄ᮾ ᾏὒ 䠅㼀㻿㼁㼆㼁㻷㻵㻷㼑㼕㼠㼍㻘㻴㻭㻾㻭㻿㼔㼛㼓㼛㻘㻹㻵㻷㻵㻹㼛㼠㼛㼔㼕㼞㼛㻘㻲㻱㻸㻰㻱㻾㻮㼞㼕㼏㼑㻘㻰㻱㻺㻳㼆㼕㼓㼍㼚㼓㻘㻵㼆㼁㻹㻵㻹㼕㼠㼟㼡㼞㼡䠄㼀㼁㻹㻿㻭㼀䠅㻱㻙㼙㼍㼕㼘㻦㼐㻝㻜㻞㻜㻝㻡㻬㼗㼍㼕㼥㼛㼐㼍㼕㻚㼍㼏㻚㼖㼜㻝䠊䛿䛨䜑䛻 5 ᕼᅵ㢮䝞䝹䜽㧗㟁ᑟయ䠄㻾㻱㻙㻮㼍㻙㻯㼡㻙㻻䠅䛿㧗䛔 C1 without addition B1 without addition 㟁ὶᐦᗘ ᛶ䠄㻶㼏䠅䛻ຍ䛘䛶 ᗘ ᛶ䠄㼀㼏䠅䜢䛧䛶䛚䜚䚸 C1.4 mol%fe-b-si-nb-cr-cu 䛻䜘䜛ᙉ ሙ䜢䛧䛯ᵝ䚻䛺ᛂ 䛜ᮇᚅ䛥䜜䛶䛔䜛䚹 4 B1.4 mol%fe-b-si-nb-cr-cu ᖺ䛷䛿ᕼᅵ㢮䛾䝞䝹䜽య䛻䛚䛔䛶䜘䜚㧗䛔㻶㼏䜢ᚓ䜛᪉ἲ C1.2 mol%fe2o3.2 mol% 䛸䛧䛶䚸 ᬗᡂ㛗๓䛾๓㥑య䛻㠀㟁ᑟ Ꮚ䜢ᚤ㔞䛻 B1.2 mol%fe2o3.2 mol% ῧຍ䛩䜛ᡭἲ䛜ᣲ䛢䜙䜜䛶䛔䜛㼇㻝㼉䚹㻶㼏䜢ቑຍ䛩䜛䛣䛸䛾䛷䛝䜛 3 ᯝ 䛺ῧຍ Ꮚ䛾᥈ 䛜ᚲせ䛷䛒䜛䛣䛸䛜ゝ䛘䜛䚹ᡃ䚻䛾䜾䝹䞊䝥䛷䛿 ᛶ䜢䜒䛳䛯ᛴ෭ 㔠䛾䛷㻲㼑㻙㻮㻙㻿㼕㻙㻺㼎㻙㻯㼞㻙㻯㼡 Ꮚ䜢㻳㼐䝞䝹䜽㧗㟁ᑟయ䛻ῧ 2 ຍ䛩䜛䛣䛸䛻䜘䜚㻶㼏䜢䛥䛫䜛䛣䛸䛻ᡂ 䛧䛶䛔䜛㼇㻞㻘㻟㼉䚹ᮏ 䛷䛿㻲㼑㻙㻮㻙㻿㼕㻙㻺㼎㻙㻯㼞㻙㻯㼡 Ꮚ䜢ῧຍ䝞䝹䜽䚸㻲㼑㻞㻻㻟䜢ᚤ 1 㔞ῧຍ䛧䛯䝞䝹䜽య䜢䛭䜜䛮䜜స〇䛧䚸ヨ䛾㻶㼏䛸ᤕᤊ ᮰ 䜢ẚ 䛧䚸㐺䛧䛯ῧຍ Ꮚ䛸㔞䜢ウ䛧䛯䚹䛥䜙䛻䛭䛾 ᯝ 䜢䛔䛶䃥㻠㻢䛾䝞䝹䜽య䜢స〇䚸ホ౯䛧䛯 ᯝ䜢ሗ 䛩䜛䚹㻞䠊ᐇ㦂᪉ἲ Magnetic field (T) Fig. 1 The magnetic field dependence of Jc with Magnetic Flux in ṳ1 mm bulk ( Wb) different particles and in different positions ṳ1 mm Fe-B-Si-Nb-Cr-Cu ṳ1 mm Fe2O3 46 mm Fe-B-Si-Nb-Cr-Cu Fe-B-Si-Nb-Cr-Cu (mol%) Fe2O3 (mol%) Magnetic Flux in 46 mm bulk ( Wb) 㻳㼐㻙㻮㼍㻙㻯㼡㻙㻻䝞䝹䜽 య 䛻 ῧ ຍ 䛩䜛䛯䜑䛻 ᕷ 䛾㻲㼑㻙㻮㻙㻿㼕㻙㻺㼎㻙㻯㼞㻙㻯㼡 Ꮚ 䛸㻲㼑㻞㻻㻟 Ꮚ 䜢 ഛ 䛧䛯䚹㻲㼑㻙㻮㻙㻿㼕㻙㻺㼎㻙㻯㼞㻙㻯㼡 Ꮚῧຍ䝞䝹䜽䛾ሙ 䚸䛭䛾 ᡂẚ䜢㻳㼐㻙㻝㻞㻟㻗㻠㻜㼙㼛㼘㻑㻳㼐㻙㻞㻝㻝㻗㼄㼙㼛㼘㻑㻲㼑㻙㻮㻙㻿㼕㻙㻺㼎㻙㻯㼞㻙㻯㼡䠄䛯䛰䛧㼄㻩㻜㻚㻜㻘㻜㻚㻞䈈㻝㻚㻠䠅䛸䛧䚸䛣䜜䜙䜢㼅㻞㻻㻟㻙㼆㼞㻻㻞 ᐜჾ䜢䛔䛶ΰ 䛧䛯䚹㻲㼑㻞㻻㻟 Ꮚῧຍ䝞䝹䜽䛷䛿㼄㻩㻜㻚㻜㻘㻜㻚㻝㻘㻜㻚㻞㻘㻜㻚㻠㻘㻜㻚㻤䛸䛧䛯䚹 ᮎ䜢 ΰᡂᶵ䛻䜘䜚㻞㛫ΰ 䛧䛯ᚋ䛻䚸䝥䝺䝇䜢䛔䛶 ᚄ 㻞㻜㼙㼙䛻ᡂᙧ䛧䛯䚹䛭䛾ᚋ䚸㧗 ⅔ 䜢䛔䛶㻴㼛㼠㻙㼟㼑㼑㼐㼕㼚㼓 ἲ䛻䜘䜛 ᬗᡂ㛗䜢䛳䛯䚹 ᬗ䛻䛿㻺㼐㻝㻞㻟 ༢ ᬗ䜢䛔䛯䚹䜎䛯 ᬗᡂ㛗ᚋ䛻㓟䜰䝙䞊䝹ฎ 䜢䛧䛯䚹㻟䠊ᐇ㦂 ᯝ ᅗ 㻝䛻㻶㼏䛾 ሙ ౫ Ꮡ ᛶ 䜢䛩䚹㻜㻚㻠㼙㼛㼘㻑㻲㼑㻙㻮㻙㻿㼕㻙㻺㼎㻙㻯㼞㻙㻯㼡 ῧຍ䚸ཬ䜃㻜㻚㻞㼙㼛㼘㻑㻲㼑㻞㻻㻟 ῧຍ䛧䛯䝞䝹䜽య䛷䛿䚸ヨ䠄㻯㻝䠅䛻䛔䛶ⴭ䛧䛔㻶㼏䛾ቑ 䛜ぢ䜙䜜䜛䚹㻳㻿ヨ䠄㻮㻝䠅䛻䛔䛶䛿㻲㼑㻙㻮㻙㻿㼕㻙㻺㼎㻙㻯㼞㻙㻯㼡 Ꮚ ῧຍヨ䛷䛿㻶㼏䛜ቑ 䛧䛶䛔䜛䛾䛻ᑐ䛧䚸㻲㼑㻞㻻㻟䛾ሙ 䛷䛿 ᙉ 䛜ぢ䜙䜜䛺䛔䚹 ᅗ 㻞䛻㻝㻜㼙㼙ゅ䛻 ᙧ䛥䜜䛯䝞䝹䜽య䛜ᤕᤊ䛧䛯 ᮰ 䛾ῧຍ㔞౫Ꮡᛶ䜢䛩䠄ᅗ 䕿ཬ䜃䕕䠅䚹 ᤕᤊ ᮰ᐦ ᗘ 䛿 ῧ ຍ ヨ䛜㻜㻚㻝㻝㼀䛰䛳䛯䛾䛻 ᑐ 䛧䚸㻜㻚㻠㼙㼛㼘㻑㻲㼑㻙㻮㻙㻿㼕㻙㻺㼎㻙㻯㼞㻙㻯㼡 ῧຍ䚸ཬ䜃㻜㻚㻞㼙㼛㼘㻑㻲㼑㻞㻻㻟 ῧຍ䜢䛳䛯䝞䝹䜽య䛷䛿୧ 䛸䜒㻜㻚㻝㻢㼀䛸䛺䜚 ῧຍ䛸ẚ 䛧䛶㻟㻝䠂䛩䜛 ᯝ 䛸䛺䛳䛯䚹 ᪉ ᮰ 䛻䛚䛔䛶䚸㻜㻚㻠㼙㼛㼘㻑㻲㼑㻙㻮㻙㻿㼕㻙㻺㼎㻙㻯㼞㻙㻯㼡 Ꮚῧຍ䛿 ῧຍ䛸ẚ䜉㻠㻜䠂䛧䚸㻲㼑㻞㻻㻟 ῧຍヨ䛾ሙ 䛸ẚ䜉䛶ቑຍ㔞䛜ከ䛟䛺䜛 ᯝ䛸䛺䛳䛯䚹䛣䜜䛿㻲㼑㻙㻮㻙㻿㼕㻙㻺㼎㻙㻯㼞㻙㻯㼡 Ꮚῧຍ䛻䜘䛳䛶䚸䛰䛡䛷䛺䛟㻳㻿䛷䜒㻶㼏䛜䛧䛯ᜠᜨ䛷䛒䜛䛘䜙䜜䜛䚹䛣䛾 ᯝ䜢䜎䛘䚸 ᚄ 㻠㻢㼙㼙䛾㻲㼑㻙㻮㻙㻿㼕㻙㻺㼎㻙㻯㼞㻙㻯㼡 Ꮚῧຍ 㻳㼐䝞䝹䜽య䜢స〇䛧䛯䚹ᤕᤊ ᮰ᐦᗘ ᐃ䛾 ᯝ䚸䖷䠅䛻䛩䜘䛖䛻㻜㻚㻠㼙㼛㼘㻑䛷 ᮰䛾䝢䞊䜽䛜ㄆ ᅗ䠎䠄ᅗ 䕿䛥䜜䛯䚹䛣䜜䛿㻝㻜㼙㼙ゅ䝃䞁䝥䝹䛷ᚓ䜙䜜䛯ഴ 䛸Ⰻ䛟䛧䛯 ᯝ䛷䛒䜛䚹䛣䜜䜙ᐇ㦂 ᯝ䛾ヲ䛻䛴䛔䛶䛿ᙜ ሗ 䛩䜛䚹 Fig. 2 The integrated magnetic flux dependence on amount of each magnetic particle ㅰ 䛣䛾䛾㒊䛿 ཬ䜃 ᕝ Ꮫ ᡂ䛾 ᨭ 䜢ᚓ䛶䜟䜜䛯䚹 ᆺヨ䛾ホ౯䜢䛖㝿䚸ᛌ䛟ᥦ౪䛧䛶㡬䛔䛯᪂ ᮏ〇㚩 ᘧ 䛾ᡭᔱⱥ Ặ䚸 Ặ䛻ឤ ㅰ䛾ព䜢䛩䚹 ཧ 㼇㻝㼉㻹㻚㻹㼡㼞㼍㼘㼕㼐㼔㼍㼞㼑㼠㼍㼘㻚㻘㻼㼔㼥㼟㼕㼏㼍㻯㻦㻿㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼢㼕㼠㼥㻘㻟㻣㻤㻙㻟㻤㻝㻘㻼㼍㼞㼠㻝㻢㻞㻣㻙㻢㻟㻜㻔㻞㻜㻜㻞㻕㼇㻞㼉㼅㼄㼡㼑㼠㼍㼘㻚㻘㻿㼡㼜㼑㼞㼏㼛㼚㼐㻚㻿㼏㼕㻚㼀㼑㼏㼔㼚㼛㼘㻚㻘㻞㻞㻞㻜㻥㻡㻜㻜㻥㻔㻞㻜㻜㻥㻕㼇㻟㼉㼅㼄㼡㼑㼠㼍㼘㻚㻘㻼㼔㼥㼟㼕㼏㼍㻯㻦㻿㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼢㼕㼠㼥, 㻠㻣㻜㻘㻵㼟㼟㼡㼑㻞㻜㻘㻝㻞㻝㻥㻙㻝㻞㻞㻟㻔㻞㻜㻝㻜㻕 162 第83回 21年度秋季低温工学超電導学会

2B-a7 SPM GM refrigerator Magnetic poles Magnetic field Compress Thermometer Fig.1 The HTS bulk magnet system with Sm123 for magnetizing experiments.

7 2B-a7 SPM GM refrigerator Magnetic poles Magnetic field Compress Thermometer Fig.1 The HTS bulk magnet system with Sm123 for magnetizing experiments. N Magnec Flux Density(T) HTS bulk Permanent magnet Scan line Fig.2 The scanning position of permanent magnet Feriite magnet x(mm) Bulk magnet Fig.3 Profiles of magnetic flux density of the sample magnet. 163

2B-a8 核融合 ୧➃෭ ᆺ ບ ᘧ䝠䞊䝖䝟䜲䝥䛾ప స ᛶ Cryogenic characteristics of both ends cooling and central heating oscillating heat pipes ᡞ 㻘 ᰗ㛗㛛㻘㻔㻺㻵㻲㻿㻕㻧 ኟ ᜤᖹ 㻔㻕㻧 ຮ㻘 ᘧ ᾈ 㻘 ᖹ㔝 ᶞ䠈㛗ᒇ㔜ኵ 㻔㒊㟁ຊ㻕 MITO Toshiyuki, YANAGI

8 2B-a8 核融合 ୧➃෭ ᆺ ບ ᘧ䝠䞊䝖䝟䜲䝥䛾ప స ᛶ Cryogenic characteristics of both ends cooling and central heating oscillating heat pipes ᡞ 㻘 ᰗ㛗㛛㻘㻔㻺㻵㻲㻿㻕㻧 ኟ ᜤᖹ 㻔㻕㻧 ຮ㻘 ᘧ ᾈ 㻘 ᖹ㔝 ᶞ䠈㛗ᒇ㔜ኵ 㻔㒊㟁ຊ㻕 MITO Toshiyuki, YANAGI Nagato, TAMURA Hitoshi (NIFS); NATSUME Kyohei (SOKENDAI䠅; TAMADA Tsutomu, SHIKIMACHI Koji, HIRANO Naoki, NAGAYA Shigeo (CEPCO) nifs.ac.jp 㻝䠊䛿䛨䜑䛻㻻㻴㻼䛾タ ᪉ ౫Ꮡᛶ䜢䜑䛯䝕䞊䝍䜢㼀㼍㼎㼘㼑㻝䛻䛩䚹 ఏᑟ䝬䜾䝛䝑䝖䛾᪂䛯䛺෭ ᢏ 䛸䛧䛶䚸䝅䞊䝖䛾 ᅇ䛾ᐇ㦂᮲ 䛷䛿䚸Ỉᖹ䚸 ຍ 䛷䛿Ᏻᐃ䛺 ບ ບ ᘧ䝠䞊䝖䝟䜲䝥䠄㻻㻴㻼㻕䜢䜏䜐䛣䛸䛻䜘䜚䚸䝬䜾䝛䝑䝖䛸䚸㻻㻴㻼䛾㧗䛔 ᛶ䛜ほ䛥䜜䛯䛜䚸 ຍ ෆ䛾䜢 ᯝ 䛻㝖ཤ䛷䛝䜛෭ ᵓ㐀䜢㛤䛧䛶䛔䜛䚹䛷䛿䚸ᆶ ཬ䜃䜑䛾୧᪉ ඹ䛻䚸Ᏻᐃ䛺 ບ 䛜ほ䛻䚸 ᖖ䛾 ෭ 䞉 ຍ 䛾㻻㻴㻼䛾タ ᪉ 䛻䜘䜛䛥䜜䛪䚸㻻㻴㻼䛸䛧䛶䛿 స䛧䛺䛛䛳䛯䚹 స ᛶ䛾㐪䛻䛴䛔䛶ᐇ㦂䜢䛔䚸㻻㻴㻼䛾タ ᪉ 䛻䜘䠏䠊୧➃෭ 䞉 ኸຍ ᆺ 㻻㻴㻼䛾ప స ᛶ 䛳䛶䛿ప 䛷䛾Ᏻᐃ䛺 స䛜䛷䛝䛺䛔䛣䛸䜢ㄆ䛧䛯䚹ḟ䛻 ᚋ䛾㻻㻴㻼 ᵓ㐀䛾㐺䛻䜘䜚䚸タ ᪉ 䛻౫䜙䛺䛔䝬䜾䝛䝑䝖෭ 䛻ᚲ 䛺タ ᪉ 䛷䛾 స䜢䛸䛩䜛䛯 స䛜䛻䛺䜛䛣䛸䜒 ᐃ䛥䜜䜛䛜䚸䜘䜚 ᐇ䛷䝬䜾䝛䝑䝖䜈䜑䚸ᵓ㐀䜢ᨵⰋ䛧䛯୧➃෭ 䞉 ኸຍ ᆺ䛾㻻㻴㻼䛻䛴䛔䛶䛾䜏䜏䛻㐺䛧䛯ᙧ 䛸䛧䛶䚸୧➃෭ 䞉 ኸຍ 䛾㻻㻴㻼 సᐇ㦂䜢䛳䛯䚹䛣䜜䜙䛾 ᯝ䛻䛴䛔䛶ሗ 䛩䜛䚹䜢䛧䚸ప 䛷䛾 సᐇ㦂䜢䛳䛯䚹୧➃෭ 䞉 ኸຍ 䠎䠊 ෭ 䞉 ຍ 㻻㻴㻼䛾タゅᗘ౫Ꮡᛶ 㻻㻴㻼䛾ᵓ㐀䜢㻲㼕㼓㻚㻞䛻䛩䚹እᚄ 㻟㼙㼙䚸ෆᚄ 㻞㼙㼙䛾㖡䜢㻤 ᅇᢡ䜚䛧䛶୧➃䜢᥋ 䛧䛯ᵓ㐀䛷䚸 ኸ㒊䛻ຍ 㒊䚸୧ 㻲㼕㼓㻚㻝䛻 ෭ 䞉 ຍ 䛾㻻㻴㻼䛻䛴䛔䛶䚸ప 䛷䛾䛻෭ ➃䛸䛺䜛㖡䝤䝻䝑䜽䛜䛡䛥䜜䛶䛔䜛䚹సᴗὶ タ ᪉ ౫Ꮡᛶ䜢 ᐃ䛧䛯ᐇ㦂䛾ᵓᡂ䜢䛩䚹ᐇ㦂䛻 య䛻䝛䜸䞁䜢䛔䚸ᾮ ሸ 㻡㻜㻑䛸䛧䛯ሙ 䛾䚸 ౯ 䛺䛔䛯㻻㻴㻼䛿䚸㓄 እᚄ 㻟㻚㻝㻤㼙㼙䠄㻝㻛㻤䜲䞁䝏䠅䚸ෆᚄ 㻝㻚㻡㻤 ఏᑟ 䛾 ᐃ ᯝ䜢㻲㼕㼓㻚㻟䛻䛩䚹㼀㼍㼎㼘㼑㻝䛻䛧䛯 ෭ 㼙㼙䛾䝇䝔䞁䝺䝇䜢䚸㒊䛾㛗䛥㻝㻢㻜㼙㼙䛷㻝㻜 ᅇᢡ䜚䛧䛾ሙ 䛻ẚ䜉䚸 ౯ 䛺 ఏᑟ 䛿 ศ䛾䠍䛾䛸䛺䛳䛶䛶୧➃䜢᥋ 䛧䛯䝹䞊䝥ᵓ㐀䛷䚸㒊䛾୧ 䛻䛿㛗䛥䛔䜛䛜䚸Ᏻᐃ䛺 ບ 䛿ほ䛥䜜䛶䛚䜚䚸㻻㻴㻼䛸䛧䛶 స 㻟㻜㼙㼙䚸ཌ䛥㻝㻜㼙㼙䛾㖡䝤䝻䝑䜽䛜䛡䛥䜜䚸䛜෭ 䛩䜛䛣䛸䛜ㄆ䛥䜜䛯䚹ᮏ 䛿䚸 Ꮫ ᡤ䚸᪂䜶 ➃䚸䜒䛖 ᪉䛜ຍ ➃䜢ᵓᡂ䛩䜛䚹タ ᪉ 䛿䚸Ỉᖹ䠄㼍㻩㻜q㻕䚸䝛䝹䜼䞊䞉 ᴗ ᢏ 㛤 ᶵ ᵓ 䠄㻺㻱㻰㻻㻕䚸 ຍ ᆶ 㻔㼍㻩㻗㻥㻜q㻕䚸 ຍ 䜑㻔㼍㻩㻗㻠㻡q㻕䚸㻔㻞㻝㻟㻢㻜㻠㻡㻢㻕䛾 ᡂ䜢䛡䛯䜒䛾䛷䛒䜛䚹 ຍ ᆶ 㻔㼍㻩㻙㻥㻜q㻕㻘 ຍ 䜑㻔㼍㻩㻙㻠㻡q㻕䛾㻡 ᪉ 䚸స ὶయ䛿ỉ 䚸䝛䜸䞁䛾㻞㢮䛻䛴䛔䛶 ᐃ䜢䛳䛯䚹 6 Condenser a = +45 P1 7 N2 Ne 9 H2 a = P2 5 8 Evaporator 4 installation angle: a = Evaporator Condenser Evaporator 3 a = -9 2 a = -45 Condenser Fig. 2. Both ends cooling and central heating OHP. Effective thermal conductivity [W/m*K] 1 1 Fig. 1. Experimental setup of cryogenic OHP measuring the effect of orientation, where 1)cryogenic OHP, 2)Cu bus bar, 3)GM cryocooler, 4)filling pipes of working fluid, 5)valve, 6)buffer tank, 7)pressure gauge, 8)gas storage of working fluid (H2, Ne, N2), 9)vacuum pump, 1)radiation shield, 11)cryostat. Table 1. Summary of characteristics of OHP with orientation Work- Orientation ing fluid [degree] Liquid filling ratio [%] Heat flux [W/mm2] Effective thermal conductivity [W/m K] H2 H2 H2 H2 H2 Ne Ne Ne Ne Ne ,5 11,48 2,22 1,33 2,83 6,38 Not operate Not operate 5,1 19,44 6, 17, 6, 8,5 Not operate Not operate Liquid filling ratio: 5% Heat input [W/mm2].25 Fig. 3. Effective thermal conductivity of both ends cooling and central heating OHP. ཧ [1] [2] 164 ᡞ, 㺀 ఏᑟ ࢢ ᆺࢩ ບ ᘧ 㛤㺁, 21ᖺᗘ Ꮨప ᕤᏛ ఏᑟᏛ ㅮ₇ᴫせ㞟,p. 51. ኟ ᜤᖹ, 㺀 ບ ᘧ ࡅ ప స ᛶ タ ᪉ ౫Ꮡᛶ㺁, 21ᖺᗘ Ꮨప ᕤᏛ ఏᑟᏛ ㅮ₇ᴫせ㞟, p.11. 第83回 21年度秋季低温工学超電導学会

2B-a9 核融合 ప స ບ ᘧ䝠䞊䝖䝟䜲䝥䛾㛤㻙 ఏᑟ䝬䜾䝛䝑䝖䜈䛾ᛂ ᛶ䛾ㄪᰝ 㻙㻰㼑㼢㼑㼘㼛㼜㼙㼑㼚㼠㼛㼒㼏㼞㼥㼛㼓㼑㼚㼕㼏㼛㼟㼏㼕㼘㼘㼍㼠㼕㼚㼓㼔㼑㼍㼠㼜㼕㼜㼑㼟㻙㻭㼜㼞㼑㼘㼕㼙㼕㼚㼍㼞㼥㼕㼚㼢㼑㼟㼠㼕㼓㼍㼠㼕㼛㼚㼛㼒㼒㼑㼍㼟㼕㼎㼕㼘㼕㼠㼥㼍㼚㼐㼑㼒㼒㼑㼏㼠㼕㼢㼑㼚㼑㼟㼟㼒㼛㼞㼟㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼚㼓㼙㼍㼓㼚㼑㼠㼟㻙 ኟ ᜤᖹ䠄䠅㻧 ᡞ 㻘 ᰗ 㛗㛛㻘䠄㻺㻵㻲㻿䠅㻧

9 2B-a9 核融合 ప స ບ ᘧ䝠䞊䝖䝟䜲䝥䛾㛤㻙 ఏᑟ䝬䜾䝛䝑䝖䜈䛾ᛂ ᛶ䛾ㄪᰝ 㻙㻰㼑㼢㼑㼘㼛㼜㼙㼑㼚㼠㼛㼒㼏㼞㼥㼛㼓㼑㼚㼕㼏㼛㼟㼏㼕㼘㼘㼍㼠㼕㼚㼓㼔㼑㼍㼠㼜㼕㼜㼑㼟㻙㻭㼜㼞㼑㼘㼕㼙㼕㼚㼍㼞㼥㼕㼚㼢㼑㼟㼠㼕㼓㼍㼠㼕㼛㼚㼛㼒㼒㼑㼍㼟㼕㼎㼕㼘㼕㼠㼥㼍㼚㼐㼑㼒㼒㼑㼏㼠㼕㼢㼑㼚㼑㼟㼟㼒㼛㼞㼟㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼚㼓㼙㼍㼓㼚㼑㼠㼟㻙 ኟ ᜤᖹ䠄䠅㻧 ᡞ 㻘 ᰗ 㛗㛛㻘䠄㻺㻵㻲㻿䠅㻧 ຮ㻘 ᘧ ᾈ 㻘 ᖹ㔝 ᶞ㻘㛗ᒇ 㔜ኵ䠄㒊㟁ຊ䠅㻺㻭㼀㻿㼁㻹㻱㻷㼥㼛㼔㼑㼕㻔㻿㻻㻷㻱㻺㻰㻭㻵㻕㻧㻹㻵㼀㻻㼀㼛㼟㼔㼕㼥㼡㼗㼕㻘㼅㻭㻺㻭㻳㻵㻺㼍㼓㼍㼠㼛㻘㼀㻭㻹㼁㻾㻭㻴㼕㼠㼛㼟㼔㼕㻔㻺㻵㻲㻿㻕㻧㼀㻭㻹㻭㻰㻭㼀㼟㼡㼠㼛㼙㼡㻘㻿㻴㻵㻷㻵㻹㻭㻯㻴㻵㻷㼛㼖㼕㻘㻴㻵㻾㻭㻺㻻㻺㼍㼛㼗㼕㼍㼚㼐㻺㻭㻳㻭㼅㻭㻿㼔㼕㼓㼑㼛㻔㻯㻱㻼㻯㻻㻕㻱㻙㼙㼍㼕㼘㻦㼚㼍㼠㼟㼡㼙㼑㻬㼚㼕㼒㼟㻚㼍㼏㻚㼖㼜㻝䠊䛿䛨䜑䛻㻠䠊 ఏᑟ䝬䜾䝛䝑䝖䜈䛾ᛂ ఏᑟ䝬䜾䝛䝑䝖䛾෭ 䝅䝇䝔䝮䛾㧗ᛶ 䛾䛯䜑䛻䚸᪂ ᐇ㦂䛻䜘䛳䛶ᚓ䜙䜜䛯 స ᛶ䜢䜒䛸䛻䚸 ఏᑟ䝬䜾䝛䛧䛔䝕䝞䜲䝇䛸䛧䛶䚸 ບ ᘧ䝠䞊䝖䝟䜲䝥䝑䝖䜈䛾㐺䛺ᛂ ᪉ἲ䜢᥈䛳䛯䚹㻲㼕㼓㻚㻞䛻 ᐃ䛧䛶䛔䜛㻔㻻㼟㼏㼕㼘㼘㼍㼠㼕㼚㼓㻴㼑㼍㼠㻼㼕㼜㼑㻦㻻㻴㻼㻕䛾䛜ᥦ 䛥䜜䛯㼇㻝㼉䚹 ᅾ䜎㻻㻴㻼䜏䜏ᆺ䜽䞊䝸䞁䜾䝟䝛䝹䛾ᴫ ᅗ䜢䛩䚹㻻㻴㻼䛾䛷䛻ప 䛷 స䛩䜛 ບ ᘧ䝠䞊䝖䝟䜲䝥䜢㢮〇స ὶ 䛿䜽䞊䝸䞁䜾䝟䝛䝹䛻䜢ษ䛳䛶ᡂᙧ䛥䜜䚸䝁䜲䝹䛾ෆ 䛧䚸䛭䛾ᇶ స ᛶ䜢ᐇ㦂䛻䜘䛳䛶ㄪ䜉䛶䛝䛯䚹䛭䛾 ᯝ 䛸እ 䛷෭ 䛩䜛䚹䛷䛿䚸䝟䞁䜿䞊䜻䝁䜲䝹䜢㻻㻴㻼䜢䜢䜎䛘䚸㛤䛧䛯ప స 㻻㻴㻼䛾ᐇ㝿䛾 ఏᑟ䝬䜾䝛䝑䝖䜏䜣䛰䜰䝹䝭䝙䜴䝮〇䛾䜽䞊䝸䞁䜾䝟䝛䝹䛷෭ 䛩䜛䛻䜈䛾ᛂ ᛶ䜢ㄪᰝ䛧䛯䚹䛴䛔䛶ウ䛧䛯 ᯝ䜢ሗ 䛩䜛䚹㻞䠊 ບ ᘧ䝠䞊䝖䝟䜲䝥㻔㻻㼟㼏㼕㼘㼘㼍㼠㼕㼚㼓㻴㼑㼍㼠㻼㼕㼜㼑㻦㻻㻴㻼㻕㻻㻴㻼䛿䛔䝟䜲䝥䜢ఱ㔜䛻䜒ᢡ䜚䛢䛯ᙧ 䜢䛧䛶䛔䜛䚹䜎䛯ᚑ᮶䛾䝠䞊䝖䝟䜲䝥䛸䛿䛺䜚䚸ෆ㒊䛻ᾮయᚠ 䛾䛯䜑䛾䜴䜱䝑䜽ᵓ㐀䛿Ꮡᅾ䛧䛺䛔䚹㻲㼕㼓㻚㻝䛿㻻㻴㻼䛾ᵓ㐀䛸 సᴫᛕ 䜢䛧䛶䛔䜛䚹ᑒධ䛥䜜䛯ὶయ䛿䝟䜲䝥ෆ㒊䛻ẼἻ䛸ᾮᰕ䛜㛗ᡭ᪉ 䛻䛻ศᕸ䛧䚸ධ 㒊䛷ᾮᰕ䛜䛧䚸෭ 㒊䛷ẼἻ䛿䛩䜛䚹䛭䜜䛻క䛖ᅽຊኚ 䛜 ὶ䜢㥑䛧䚸䛸㢧䛾୧᪉䜢௨䛶䛿䛥䜜䜛䚹㻟䠊 ບ ᘧ䝠䞊䝖䝟䜲䝥䛾ప స ᛶ స ὶయ䛸䛧䛶ỉ 䚸䝛䜸䞁䜢䛔䛶ప స 㻻㻴㻼䛾 స ᛶ䛾 ᐃᐇ㦂䜢䛳䛯㼇㻝㻙㻟㼉䚹䛭䛾 ᯝ䚸〇స䛧䛯㻻㻴㻼䛾ᐇ 䛺㻻㻴㻼䛾 ఏᑟᗘ䛿䛭䜜䛮䜜䚸㻞㻘㻜㻜㻜㻙㻝㻝㻘㻡㻜㻜㼃㻛㻔㼙䞉㻷㻕䚸㻡㻘㻜㻜㻜㻙㻝㻥㻘㻡㻜㻜㼃㻛㻔㼙䞉㻷㻕䛻㐩䛧䛯㻔㼏㼒㻚 ṧ ᢠẚ 䛜㻝㻜㻜䛾㖡䛾 ఏᑟᗘ䛿䚸 ᗘ 㻞㻜㻷䚸 ሙ 㻝㼀䛾᮲ 䛷㻞㻘㻜㻜㻜㼇㼃㻛㼙㻖㻷㼉 ᗘ㻕䚹䜎䛯䚸タ ᪉ 䛻䜘䜛 స ᛶ䛾ኚ 䜢 ῶ䛧䚸䜘䜚 ᐇ䛷Ᏻᐃ䛺 స䛾䛯䜑䛻୧➃෭ 䞉 ኸ ຍ 䛾㻻㻴㻼䜢㛤䛧ᐇ㦂䜢䛳䛶䛔䜛䚹 Figure 2 Supposed prototype model of cooling panel for conduction/indirect cooling system for pancake coils C ondenser 㻡䠊䛚䜟䜚䛻 ᮏ 䛿䚸 Ꮫ ᡤ䚸᪂䜶䝛䝹䜼䞊䞉 ᴗᢏ 㛤 ᶵᵓ㻔㻺㻱㻰㻻㻕䚸㻔㻞㻝㻟㻢㻜㻠㻡㻢㻕䛾 ᡂ䜢䛡䛯䜒 L iq u id s lu g / 䛾䛷䛒䜛䚹 V a p o u r b u b b le ཧ o s c illa t io n 㻝㻚㼀㻚㻹㼕㼠㼛㻘㼑㼠㼍㼘㻘㻦㻰㼑㼢㼑㼘㼛㼜㼙㼑㼚㼠㼛㼒㻴㼕㼓㼔㼘㼥㻱㼒㼒㼑㼏㼠㼕㼢㼑㻯㼛㼛㼘㼕㼚㼓㼀㼑㼏㼔㼚㼛㼘㼛㼓㼥㼒㼛㼞㼍㻿㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼚㼓㻹㼍㼓㼚㼑㼠㼁㼟㼕㼚㼓㻯㼞㼥㼛㼓㼑㼚㼕㼏㻻㻴㻼㻘㻭㼜㼜㼘㼕㼑㼐㻿㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼢㼕㼠㼥㻘㻵㻱㻱㻱 E v a p o ra to r 㼀㼞㼍㼚㼟㼍㼏㼠㼕㼛㼚㼟㼛㼚㻘㼢㼛㼘㻚㻞㻜㻘㻞㻜㻝㻜㻘㼜㼜㻚㻞㻜㻞㻟㻙㻞㻜㻞㻢㻚㻞㻚㻷㻚㻺㼍㼠㼟㼡㼙㼑㻘㼑㼠㼍㼘㻘㻦㻴㼑㼍㼠㼠㼞㼍㼚㼟㼒㼑㼞㼏㼔㼍㼞㼍㼏㼠㼑㼞㼕㼟㼠㼕㼏㼟㼛㼒㼏㼞㼥㼛㼓㼑㼚㼕㼏㼛㼟㼏㼕㼘㼘㼍㼠㼕㼚㼓㼔㼑㼍㼠㼜㼕㼜㼑㼟㼒㼛㼞㼔㼕㼓㼔㼠㼑㼙㼜㼑㼞㼍㼠㼡㼞㼑㼟㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼚㼓㼙㼍㼓㼚㼑㼠㼟㻘㻯㼞㼥㼛㼓㼑㼚㼕㼏㼟㻔㼠㼛㼎㼑㼜㼡㼎㼘㼕㼟㼔㼑㼐㻚㻕㻚㻟㻚㼀㻚㻹㼕㼠㼛㻘㼑㼠㼍㼘㻚㻦㻭㼎㼟㼠㼞㼍㼏㼠㼟㼛㼒㻯㻿㻶㻯㼛㼚㼒㼑㼞㼑㼚㼏㼑㻘㼂㼛㼘㻚㻤㻟㻔㻞㻜㻝㻜㻕 Figure 1 Concept of the heat transfer mechanism of 㻞㻮㻙㼍㻜㻤㻚 oscillating heat pipe (OHP) 165 第83回 21年度秋季低温工学超電導学会

10 2B-a1 166

2B-a11 核融合䝦䝸䜹䝹ᆺ 䜶䝛䝹䜼䞊⅔㻲㻲㻴㻾䛾㧗 ఏᑟ䝬䜾䝛䝑䝖タィ䜸䝥䝅䝵䞁䛾㐍ᒎ Progress of High-Temperature Superconducting Magnet Option for the Helical-Type Fusion Energy Reactor FFHR ᰗ 㛗㛛䠈 ᡞ 䠈䠈ᚋ ᣅஓ䠈 ᕝಙస䠈 Ⰻ 㻔NIFS㻕䠗 ኟ ᜤᖹ 㻔㻕

jp 䠍䠊䛾 ᬒ ᆺ䝦䝸䜹䝹㻔㻸㻴㻰㻕䛻䛚䛡䜛䜜䛯䝥䝷䝈䝬㛢䛨䛣䜑 ᐇ㦂䛾㐍ᒎ䜢䛡䛶䚸䝦䝸䜹䝹ᆺ 䜶䝛䝹䜼䞊⅔ FFHR 䛾タィ䛜㗦ព㐍䜑䜙䜜䛶䛔䜛[1]ࠋ䛣䛾䛾ᕧ 䛺 ఏᑟ䝦䝸䜹䝹䝁䜲䝹䛻䛿䚸㦂 ሙ 13 T ௨ 䛻䛚䛔䛶㟁ὶ 1 ka 䛾ᑟయ䛜せồ䛥䜜䜛䚹 ᅾ䛾タィ䛷䛿䚸Nb3Al 䜢䛔䛯䜿䞊䝤䝹䜲䞁䝁䞁䝆䝑䝖ᑟయ䜢ᇶᮏ䜸䝥䝅䝵䞁䛸䛧䚸ITER 䛷㛤䛥䜜䛶䛝䛯ᢏ

11 2B-a11 核融合䝦䝸䜹䝹ᆺ 䜶䝛䝹䜼䞊⅔㻲㻲㻴㻾䛾㧗 ఏᑟ䝬䜾䝛䝑䝖タィ䜸䝥䝅䝵䞁䛾㐍ᒎ Progress of High-Temperature Superconducting Magnet Option for the Helical-Type Fusion Energy Reactor FFHR ᰗ 㛗㛛䠈 ᡞ 䠈䠈ᚋ ᣅஓ䠈 ᕝಙస䠈 Ⰻ 㻔NIFS㻕䠗 ኟ ᜤᖹ 㻔㻕 YANAGI Nagato, GOTO Takuya, TAMURA Hitoshi, MITO Toshiyuki, IMAGAWA Shinsaku, SAGARA Akio㻔NIFS㻕; NATSUME Kyohei (Sokendai) 䠍䠊䛾 ᬒ ᆺ䝦䝸䜹䝹㻔㻸㻴㻰㻕䛻䛚䛡䜛䜜䛯䝥䝷䝈䝬㛢䛨䛣䜑 ᐇ㦂䛾㐍ᒎ䜢䛡䛶䚸䝦䝸䜹䝹ᆺ 䜶䝛䝹䜼䞊⅔ FFHR 䛾タィ䛜㗦ព㐍䜑䜙䜜䛶䛔䜛[1]ࠋ䛣䛾䛾ᕧ 䛺 ఏᑟ䝦䝸䜹䝹䝁䜲䝹䛻䛿䚸㦂 ሙ 13 T ௨ 䛻䛚䛔䛶㟁ὶ 1 ka 䛾ᑟయ䛜せồ䛥䜜䜛䚹 ᅾ䛾タィ䛷䛿䚸Nb3Al 䜢䛔䛯䜿䞊䝤䝹䜲䞁䝁䞁䝆䝑䝖ᑟయ䜢ᇶᮏ䜸䝥䝅䝵䞁䛸䛧䚸ITER 䛷㛤䛥䜜䛶䛝䛯ᢏ 䛾ᘏ㛗䛸䛧䛶ウ䜢㐍䜑䛶䛔䜛[2]䚹 ᪉䚸ඛ㐍䜸䝥䝅䝵䞁䛸䛧䛶䚸Y 㧗 ఏᑟ䠄HTS䠅䜢㞟䛧䛶 ᆺᑟయ䜢ᵓᡂ䛧䚸㛫᥋෭ 䜢㐺䛩䜛 ᛶ䛻䛴䛔䛶䜒ウ䛧䛶䛔䜛[3,4]䚹HTS ᑟయ䜢䛔䜛䛸 2 K ௨ 䛾㧗㐠䛜䛸䛺䜛䛯䜑䚸䝁䜲䝹䛾Ᏻᐃᛶ䛻䜜䜛䛸䛸䜒䛻䚸෭ 䝟䝽䞊䛾 ῶ䛜ᮇᚅ䛥䜜䜛䚹ᑟయ䛿 Y 䝔䞊䝥䜢༢ ᒙ䛧䛶䝇䝔䞁䝺䝇〇䝆䝱䜿䝑䝖䛻䜑䜛ᵓ㐀䜢 ᐃ䛧䛶䛔䜛䛜䚸 ᚲせ䛻ᛂ䛨䛶㛫䛾 ᵓ㐀䜒ᑟධ䛩䜛䚹䛣䜜䜎䛷䛻 1 ka ᑻᑟయ䝃䞁䝥䝹䛾ヨ㦂䜢䛳䛶䛚䜚䚸1 ka ᑟయ 䜢㛤䛷䛝䜛ぢ䛧䜢ᚓ䛶䛔䜛䚹䛷䛒䜜䜀 ᐇ䛻᥋ 䜢䛖䛣䛸䛜䛷䛝䚸䛻㛵䛧䛶䜒ၥ㢟䛻䛺䜙䛺䛔䚹䛣䛣䛷䚸ᑟయ᥋ 㒊䛻䛿䚸ᅗ䠎䛻䛩䜘䛖䛺㝵ẁ 䛾ᵓ㐀䜢䛘䜛䚹䛣䜜䛿䚸䛨 Y 䜢䛔䛯᥋ 䝢䞊䝇䜢 ព䛧䚸 ఏᑟ㠃 ኈ䜢 ᥋ 䛩䜛䛣䛸䛷ప ᢠ᥋ 䜢ᐇ 䛩䜛䜒䛾䛷䛒䜛䚹䚸㛫䛷 5 mm 䛾᥋ 㛗䜢䛘䜛䛸䚸ᑟయ య䛸䛧䛶䛿.3 n䃈 ᗘ䛾᥋ ᢠ䛻䛺䜛䛸ண 䛥䜜䜛䚹䜘䛳䛶䚸ᑟయ㟁ὶ 1 ka 䛷 8 ᡤ䛾᥋ 䛜䛒䜛ሙ 䚸 య䛷䛿 24 kw 䛾䛸䛺䜛䛜䚸2 K ෭ 䛾ሙ 䚸䛣䛾 ศ䛻ᚲせ䛺እ㒊㟁ຊ䛿 1.5 MW ᗘ䛷䜐䚹 ᪉䚸᥋ 㒊䛷䛿䝇䝔䞁䝺䝇䛾䝆䝱䜿䝑䝖㛫䜢 ᥋䛩䜛䛣䛸䛷 ศ䛺ᘬ䛳ᙇ䜚 ᙉᗘ䜢 ಖ䛩䜛䛣䛸䜒㔜せ䛷䛒䜛䚹䜎䛯䚸 ᑟయ䛿䝢䝑䝏㛗䛸䛧䛶 ᗘⰋ䛟䠏ḟඖ 䛢䜢䛳䛶䝁䜲䝹ᐜჾෆ䛻䛘䛡䛶䛔䛟䛜䚸䠍ᮏ䛪䛴 ๓䛻ᾮయ 䛷ヨ㦂䜢䛖䛣䛸䜒 ᐃ䛷䛝䚸䛣䜜䜒ရ 䛾䛖䛘䛷䛝䛺䝯䝸䝑䝖䛸䛺䜛䚹䠎䠊䝉䜾䝯䞁䝖᪉ᘧ䛾䝦䝸䜹䝹䝁䜲䝹䜏䛶᪉ἲ HTS 䜸䝥䝅䝵䞁䜢᥇ 䛩䜛ሙ 䚸ᅗ䠍(a)䛻䛩䜘䛖䛻䚸㐃䛧䛯䝦䝸䜹䝹䝁䜲䝹䜢䝢䝑䝏䛤䛸䛻ศ 䛧䛶〇స䛩䜛᪉ἲ䜒䛘䜙䜜䜛[3,4]䚹䛣䛾ሙ 䚸ᑟయ㛫䛾᥋ ᡤ䛜 8 ᗘ䛻 ཬ䜆䛜䚸HTS ᑟయ䜢䛔䜛䛣䛸䛷ᒁᡤ 䛺 ᗘ 䛸 య䛾 ෭ 䝟䝽䞊䛻వ 䛜䛷䛝䜛䛯䜑䚸䛣䛖䛧䛯ᵓ㐀䜢䜛䛣䛸䛜ཎ 䛻䛿䛷䛒䜛䚹䛻䚸䛣䛾〇స᪉ᘧ䜢᥇ 䛩䜛䛣䛸䛻䜘䛳䛶䚸௨ 䛾䜘䛖䛺䝯䝸䝑䝖䛜ᮇᚅ䛥䜜䜛䚹 Fig. 1 Segmented fabrication of helical coils with (a) half-pitch coil segments and (b) half-pitch conductor segments. 䞉㞧䛺⅔ෆᵓ㐀䠄ቑṪ䝤䝷䞁䜿䝑䝖䜔䝎䜲䝞䞊䝍䠅䜢ඛ䛻䛘䛡䛯ᚋ䛻䚸䝦䝸䜹䝹䝁䜲䝹䜢〇స䛷䛝䜛䚹䞉㐃 ᕳ 䛝 ᪉ ᘧ 䛻 ᚲ せ Ḟ 䛸䛺䜛 ᕧ 䛺 ᕳ ᶵ 䠄FFHR 䛷䛿እᚄ 4 m䠅䜢䛻〇స䛩䜛ᚲせ䛜䛺䛔䚹䞉 ᕳ ᵓ㐀䛸䛧䛶➃ᮎฎ 䛻䜜䛯䝎䝤䝹䝟䞁䜿䞊䜻ᵓ㐀䜢᥇ 䛩䜛䛣䛸䜒䛸䛺䜛䚹䞉䛣䛾〇స᪉ᘧ䛾 ᒎᙧ䛸䛧䛶䚸䝉䜾䝯䞁䝖䜢ᶵ ᥋ 䛩䜛䛣䛸䛷䛸䛩䜛䜸䝥䝅䝵䞁䜒䛘䜙䜜䜛[5]䚹䞉㐃 ᕳ 䛸ẚ䜉䛶ᕤᮇ䛾䛜ᮇᚅ䛷䛝䜛䚹 ᪉䚸ᢏ ㄢ㢟䜢䛘䜛䛸䚸䜎䛪䚸䝁䜲䝹䝟䝑䜽䛾䛻䜑䜙䜜䛯 ᮏ䝺䝧䝹䛾ᑟయ ኈ䜢䛔䛛䛻䛧䛶᥋ 䛩䜛䛾䛛䚸 ᐇ䛻䛿ᴟ䜑䛶㞴䛧䛔ၥ㢟䛷䛒䜛䚹䜎䛯䚸 ᴗ⅔䛾タィ䛷䛿䚸䝦䝸䜹䝹䝁䜲䝹䛾䝢䝑䝏ศ䛾㔜㔞䛿䝖䞁䛻ཬ䜆䛣䛸䛻䛺䜚䚸䛜㞴䛧䛔䚹䜘䛳䛶䚸䛣䛾᪉ᘧ䛿㨩ຊ 䛷䛒䜛䜒䛾䛾䚸 ᐇ 䛺ᕤᏛタィ䜢䛖䛣䛸䛿 ᙜ䛻ᅔ㞴䛷䛒䜛䛸ㄆ䛥䜜䛯䚹䠏䠊 ᑟయ䝉䜾䝯䞁䝖᪉ᘧ䛾ᕳ ᪉ἲ 䛭䛣䛷䚸 ᅇ䚸䛣䛾䝉䜾䝯䞁䝖᪉ᘧ䛾〇స䛻㛵䛩䜛 య 䛿く䛧䛴䛴䚸䛣䜜䜎䛷䛸䛿ᑡ䛧䛺䜛᪉ἲ䜢䛘䜛䛣䛸䛷䚸䜘䜚 ᐇ 䛺ᕤᏛタィ䛜䛸䛺䜛䛣䛸䜢ぢ䛔䛰䛧䛯䚹䛣䜜䛿䚸䝦䝸䜹䝹䝁䜲䝹 య䜢䝉䜾䝯䞁䝖䛩䜛䛾䛷䛿䛺䛟䚸ᅗ䠍(b)䛻䛩䜘䛖䛻䚸ᑟయ䠍ᮏ䠍ᮏ䜢䝢䝑䝏䛪䛴䛾䝉䜾䝯䞁䝖䛸䛧䛶ಶ 䛻䝁䜲䝹ᐜჾ䛾䛻䜑䚸㡰ḟ᥋ 䛧䛶䛔䛟᪉ἲ䛷䛒䜛䚹䛣䜜 Fig. 2 Illustration for the jointing method of HTS conductors. 䛺䛚䚸㧗 ఏᑟ䜸䝥䝅䝵䞁䛾 R&D 䛸䛧䛶䚸 ᅇ䚸Bi-2223 䜢䛔䛶 ᚄ 4 mm䚸䝖䝻䜲䝎䝹 ሙ.1 T ᗘ䛾䝦䝸䜹䝹䝁䜲䝹䠄䛸䛧䛶䛿ୡ 䠅䜢〇స䛧䚸ᐇ㦂䜒䛳䛯䛾䛷䚸ㅮ₇䛷䛿䛭䜜䛻䛴䛔䛶䜒䛩䜛䚹 ཧ [1] A. Sagara et al., Fusion Eng. Des. 81 (26) 273. [2] S. Imagawa et al., Plasma and Fusion Res. 3 (28) S15. [3] G. Bansal et al., Plasma and Fusion Res. 3 (28) S149. [4] N. Yanagi et al., Plasma and Fusion Res. 5 (21) S126. [5] H. Hashizume et al., J. Plasma Fusion Res. 5 (21) 第83回 21年度秋季低温工学超電導学会

12 2B-a12 Hysteresis loss in poloidal coils of the Large Helical Device (LHD) H m mh 1/ 1/ 1/ mh mh 1/ 168

12 九州産業大学情報科学会誌 10 巻 1 号 (2011 年 11 月 43) 2011 Koichiro Tanaka Department of Information Science, Faculty of Information Science, Kyushu Sangyo Univer

12 九州産業大学情報科学会誌 10 巻 1 号 (2011 年 11 月 43) 2011 Koichiro Tanaka Department of Information Science, Faculty of Information Science, Kyushu Sangyo University tanaka@is.kyusan-u.ac.jp, http://www.is.kyusan-u.ac.jp/~tanaka/