MgB2(1) - 公益社団法人 低温工学・超電導学会

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MgB2 (1)
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第82回 2010年度春季低温工学・超電導学会
2B-a02
MgB2 (1)
MgB2 ⭯⤑䈱ャㅍ․ᕈ䈮෸䈿䈜䊙䊦䉼䊋䊮䊄ലᨐ䈱⹏ଔ
Understanding the multi-band effects on current transport in tilted MgB2 films
ጊᧄ ᣿଻(᧲ᄢ㒮Ꮏ); 䊙䊥䊷䊅䊶䊒䉾䊁䉞(દ䉳䉢䊉䊋ᄢ); 䉝䊅䊃䊥䊷䊶䊘䊥䊟䊮䉴䉨䊷, 䉝䊧䉪䉰䊮䉻䊷䊶䉩䊠䊧䊎䉾䉼, 䊂䊎䉾䊄䊶
䊤䊋䊧䉴䊁䉞䉣(☨࿖┙ᒝ⏛႐⎇); 䉼䉢䊮䉧䊮䊶䉼䊠䉝䊮, 䉲䊞䉥䉲䊮䊶䉲(☨䊁䊮䊒䊦ᄢ); ਅጊ ᷕ৻, ጯየ శੑ(᧲ᄢ㒮Ꮏ)
YAMAMOTO Akiyasu(Univ. of Tokyo); PUTTI Marina(Genova Univ.); POLYANSKII Anatolii, GUREVICH Alexander,
LARBALESTIER David(NHMFL); ZHUANG Chenggang, XI Xiaoxing(Temple Univ.); SHIMOYAMA Jun-ichi,
KISHIO Kohji(Univ. of Tokyo)
E-mail: [email protected]
1. ߪߓ߼ߦ
㊄ዻ♽⿥વዉ૕䈪ᦨ䉅㜞䈇⥃⇇᷷ᐲ(Tc ~40 K)䉕ᜬ䈧 MgB2
䈲䋬ᶧ૕䊓䊥䉡䊛䊐䊥䊷䈱 20 K ㄭற䈪䈱ᔕ↪䈮ะ䈔䈩Ⓧᭂ⊛䈮
⎇ⓥ䈏ㅴ䉄䉌䉏䈩䈇䉎䋮MgB2 䈲ૐ䈇⇣ᣇᕈ䈫㐳䈇⿥વዉ䉮䊍䊷
䊧䊮䉴㐳䈮↱᧪䈚䈩䋬ᄙ⚿᥏૕䈮䈍䈇䈩䉅ャㅍ㔚ᵹ䈲ኈᤃ䈮ᵹ
䉏䉎䈫⠨䈋䉌䉏䈩䈐䈢䋮䈚䈎䈚䋬ㄭᐕ䈱⎇ⓥ䈎䉌 MgB2 ᄙ⚿᥏૕
䈱ャㅍ․ᕈ䈲න⚿᥏╬䈎䉌੍ᗐ䈘䉏䉎୯䈫Ყセ䈚䈩ᛥ೙䈘䉏䈩
䈇䉎䈖䈫䈏᣿䉌䈎䈫䈭䈦䈩䈐䈩䈇䉎[1,2]䋮৻ᣇ䋬MgB2 䈲 2 䊋䊮䊄⿥
વዉ૕䈪䈅䉍䋬c ゲᣇะߩャㅍࠍਥߦᜂ߁Sࡃࡦ࠼ߩ᜼േߪᄙ
⚿᥏૕ߩャㅍ․ᕈߦᒝ޿ᓇ㗀ࠍਈ߃ࠆߣ੍ᗐߐࠇࠆ߇㧘㔚ᵹ
ャㅍ․ᕈߦ߅ߌࠆࡑ࡞࠴ࡃࡦ࠼ലᨐߪࠃߊಽ߆ߞߡ޿ߥ޿㧚
ᧄ⎇ⓥߢߪSࡃࡦ࠼߇ャㅍ․ᕈߦ෸߷ߔᓇ㗀ࠍ⹏ଔߔࠆߎ
ߣࠍ⋡⊛ߣߒߡ㧘c ゲ߇ 19 ᐲ௑޿ߚࠛࡇ࠲ࠠࠪࡖ࡞ MgB2
⭯⤑ࠍ૞⵾ߒߚ㧚ߎߩ⭯⤑ߪ࠴࡞࠻ᣇะߣု⋥ߦ⊒㆐ߒߚ㓏
Ბ⁁ߩࠬ࠹࠶ࡊ᭴ㅧࠍ᦭ߒ㧘ࠬ࠹࠶ࡊߦኻߒᐔⴕߦ ab 㕙ࠍ
ᵹࠇࠆ JL ߣ㧘ု⋥ᣇะߦ ab 㕙ߣ c ゲᣇะߩਔᣇࠍᵹࠇࠆ JT
ߩ 2 ⒳ߩ㔚ᵹࠍ↢ߓࠆ㧚ਔࡃࡦ࠼߇વዉߦነਈߔࠆ JL ߦኻ
ߒߡ㧘JT ߪVࡃࡦ࠼߇ᡆ 2 ᰴర⊛ߢ޽ࠆߎߣߦ↱᧪ߒߡਥߦ
Sࡃࡦ࠼ߦࠃߞߡᜂࠊࠇࠆߣ⠨߃ࠄࠇࠆߎߣ߆ࠄ㧘ߎࠇࠄ 2
⒳ߩ㔚ᵹࠍ᷷ᐲ㧘⏛႐ࠍᄌൻߐߖߡ᷹ቯߔࠆߎߣߢ㧘Sࡃࡦ
࠼ߩャㅍ․ᕈߦ෸߷ߔᓇ㗀ࠍ⹏ଔߒߚ㧚
2. ታ㛎ᣇᴺ
HPCVD(Hybrid Physical-Chemical Vapor Deposition)ᴺߦࠃ
ࠅ MgO(111)ၮ᧼਄ߦ c ゲ㈩ะࠛࡇ࠲ࠠࠪࡖ࡞ MgB2 ⭯⤑
(Flat)ࠍ㧘MgO(211)ၮ᧼਄ߦ c ゲ߇ 19 ᐲ௑޿ߚࠛࡇ࠲ࠠࠪࡖ
࡞ MgB2 ⭯⤑(Tilt)ࠍ૞⵾ߒߚ㧚⹜ᢱࠨࠗ࠭ߪ 5 mm˜5 mm˜
50 nm ߢ޽ࠆ㧚ߎࠇࠄߩ⭯⤑ߦኻߒߡ PPMS 䉕↪䈇䈩ャㅍ․
ᕈ䈱⹏ଔ䉕䋬⹜ᢱᝄേဳ⏛ജ⸘(VSM)䋬SQUID ⏛᧤⸘䉕↪䈇
䈩⏛ൻ䈱⹏ଔ䉕䋬⏛᳇శቇ(MO)ᴺ䈮䉋䉍⹜ᢱౝ䈱⏛᧤ኒᐲಽ
Ꮣ෸䈶 Jc 䈱⹏ଔ䉕ⴕ䈦䈢䋮
3. ⚿ᨐߣ⠨ኤ
ή⏛႐ਅ಄ළᓟ䈱 10 K, 40 mT 䈱⏛႐ਅ䈮䈍䈔䉎 2 ⒳䈱
MgB2 ⭯⤑䈱⏛᳇శቇ௝䉕 Fig. 1 䈮␜䈜䋮Flat ⭯⤑䈪䈲╬ᣇ⊛
䈭⏛᧤䈱ଚ౉䈏䉂䉌䉏䉎䈱䈮ኻ䈚䋬Tilt ⭯⤑䈪䈲⇣ᣇ⊛䈭⏛᧤
䈱ଚ౉䈏ⷰኤ䈘䉏䈢䋮䈖䈱⚿ᨐ䈲䉴䊁䉾䊒䈮ᴪ䈦䈩ᵹ䉏䉎 JL ߇
JT ࠃࠅ߽㜞޿ߎߣࠍ␜ߔ㧚⏛᳇శቇ௝䉋䉍⷗Ⓧ䉅䈦䈢 Jc 䈱᷷ᐲ
ଐሽᕈ䉕 Fig. 2 䈮␜䈜䋮ᓧ䉌䉏䈢 Jc 䈲 20 K એਅ䈪 107 A/cm2
એ਄䈫㜞䈇䋮Tilt ⭯⤑䈮䈍䈔䉎 2 ⒳䈱 Jc 䈱Ყ JL/JT 䈱᷷ᐲଐሽᕈ
䉕ౝᝌ࿑䈮␜䈜䈏䋬JL/JT 䈲᷷ᐲ䈱ૐਅ䈫䈫䉅䈮ૐ䈒䈭䉎᜼േ䈏
䉂䉌䉏䈢䋮䈖䉏䈲 YBCO ⭯⤑䈪䉂䉌䉏䉎᷷ᐲଐሽᕈ[3]䈫䈲ㅒ䈪
䈅䉍䋬MgB2 䈱 Tilt ⭯⤑䈮䈍䈇䈩䊏䊮䊆䊮䉫એᄖ䈱ⷐ࿃䈏 Jc 䈮ᓇ
㗀䉕෸䈿䈚䈩䈇䉎䈖䈫䉕␜ໂ䈜䉎䋮
[1] A. Yamamoto, J. Shimoyama, K. Kishio and T. Matsushita, Supercond.
Sci. Technol. 20, 658 (2007).
[2] T. Matsushita, M. Kiuchi, A. Yamamoto, J. Shimoyama and K. Kishio,
Supercond. Sci. Technol. 21, 015008 (2008).
[3] A. Polyanskii, R. L. S. Emergo, J. Z. Wu, T. Aytug, D. K. Christen, G.
K. Perkins and D. Larbalestier, Phys. Rev. B 72, 174509 (2005).
Fig. 1. Magneto-optical images at 10 K under 40 mT after
zero-field-cooling on Flat (upper panel) and Tilt (bottom panel) MgB2
epitaxial films.
Fig. 2. Temperature dependence of Jc obtained from magneto-optical
images for Flat film and Tilt film. Inset shows anisotropy of two Jc in
Tilt film.
― 116 ―
第82回 2010年度春季低温工学・超電導学会
2B-a03
MgB2 (1)
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第82回 2010年度春季低温工学・超電導学会
2B-a04
MgB2 (1)
ౝㇱ 㪤㪾 ᜛ᢔ䋨㪠㪤㪛䋩ᴺ䈮䉋䉎 㪤㪾㪙㪉 ✢᧚䈱૞⵾㩷 㩷
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䈫䈏䈪䈐䈢䇯䈖䉏䉌䈱✢᧚䉕 㪍㪇㪇㪄㪎㪉㪇㫆㪚 䈪 㪈 ᤨ㑆ᾲಣℂ䈚䇮⚵
㪝㫀㪾㪅㩷㪈㩷
㩷 㪣㫆㫎㩷㪸㫅㪻㩷㪿㫀㪾㪿㩷㫄㪸㪾㫅㫀㪽㫀㪺㪸㫋㫀㫆㫅㩷㫆㫇㫋㫀㪺㪸㫃㩷㫄㫀㪺㫉㫆㪾㫉㪸㫇㪿㫊㩷㫆㫅㩷
㩷
❱䉕 㪯 ✢࿁᛬䈭䉌䈶䈮 㪪㪜㪤 䈪⺞䈼䉎䈫䈫䉅䈮䇮⒳䇱䈱᷷ᐲ䇮
㫋㫉㪸㫅㫊㫍㪼㫉㫊㪼㩷㪺㫉㫆㫊㫊㩷㫊㪼㪺㫋㫀㫆㫅㫊㩷㫆㪽㩷㫋㪿㪼㩷㩿㪸㪀㫊㫀㫅㪾㫃㪼㪄㪽㫀㫃㪸㫄㪼㫅㫋㩷㫎㫀㫉㪼㪃㩷㩿㪹㪀㩷
㩷
⏛⇇ਛ䈪⥃⇇㔚ᵹ 㪠㪺 䉕᷹ቯ䈚䈢䇯⥃⇇㔚ᵹኒᐲ 㪡㪺 䈲䇮㪠㪺 䉕
㪎㪄㪽㫀㫃㪸㫄㪼㫅㫋㩷
㫎㫀㫉㪼㩷 㪸㫅㪻㩷 㩿㪺㪀㩷 㪈㪐㪄㪽㫀㫃㪸㫄㪼㫅㫋㩷 㫎㫀㫉㪼㩷 㪸㪽㫋㪼㫉㩷 㫋㪿㪼㩷 㪿㪼㪸㫋㩷
㩷
㪤㪾㪙㪉 䉕ਥ⋧䈫䈜䉎෻ᔕጀ䈱✚ᢿ㕙Ⓧ䈪㒰䈚䈩᳞䉄䈢䇯㩷
㫆
㫋㫉㪼㪸㫋㫄㪼㫅㫋㩷㪸㫋㩷㪍㪋㪇
㪚㩷㪽㫆㫉㩷㪈㩷㪿㫉㪅㩷 㩷
㩷
㩷
㪊䋮⚿ᨐ䈫⠨ኤ㩷
㪝㫀㪾㪅䋱䈮䇮㪍㪋㪇㫆㪚 䈪 㪈 ᤨ㑆ᾲಣℂ䈚䈢䇮න⧌䇮㪎 ⧌䈍䉋䈶 㪈㪐
⧌✢᧚䈱ᢿ㕙౮⌀䉕␜䈜䇯න⧌✢᧚䈪䈲䇮ฝ䈱㜞୚₸౮⌀
䈏␜䈜䉋䈉䈮䇮㪙㪂㪪㫀㪚 ጀ䈱ෘ䈘䈏ᄢ䈐䈇䈢䉄䈮෻ᔕጀ䈫 㪫㪸 ო
䈱㑆䈮 㪙㪂㪪㫀㪚 䈱ᧂ෻ᔕጀ䈏䈎䈭䉍⹺䉄䉌䉏䉎䇯㪎 ⧌✢᧚䈮䈍
䈇䈩䈲䇮ടᎿᓟ䈱 㪙㪂㪪㫀 ጀෘ䈏ᷫዋ䈜䉎䈢䉄䈮䇮䈖䈱ᾲಣℂ
ᓟ䈱ᧂ෻ᔕጀ䉅ᷫዋ䈚䇮㪈㪐 ⧌✢᧚䈮䈍䈇䈩䈲䇮ᧂ෻ᔕጀ䈲
䈾䈫䉖䈬⹺䉄䉌䉏䈭䈒䈭䉎䇯䈖䉏䉋䉍䇮䈖䈱ᾲಣℂ᷷ᐲ䈮䈍䈇䈩
䈲䇮㪤㪾 䈱᜛ᢔ〒㔌䈲 㪉㪇㪄㪊㪇P㫄 ⒟ᐲ䈮೙㒢䈘䉏䇮㪙 ⋧䈫᜛ᢔ
㪤㪾 䈫䈱ቢో䈭෻ᔕ䉕㆐ᚑ䈘䈞䉎䈢䉄䈮䈲䇮㪙 ጀෘ䈲 㪉㪇P㫄 એ
ਅ䈪䈅䉎䈖䈫䈏ᔅⷐ䈫⠨䈋䉌䉏䉎䈏䇮䈖䈱 㪙 ጀෘ䈲ᧄታ㛎䈪䈲
㪈㪐 ⧌✢᧚䈪㆐ᚑ䈘䉏䈩䈇䉎䇯䈚䈢䈏䈦䈩䇮㪤㪾㪙㪉 ෻ᔕጀ䉕Ⴧᄢ
䈘䈞䈩㜞䈇 㪠㪺 䉕ᓧ䉎䈢䉄䈮䈲䇮䊐䉞䊤䊜䊮䊃ᢙ䉕Ⴧ䉇䈚䈩 㪙 ጀෘ
䉕ᷫዋ䈘䈞䉎䈫䈏ലᨐ⊛䈫⠨䈋䉌䉏䉎䇯㩷
㪝㫀㪾㪅㩷 㪉 䈮䈲⒳䇱䈱᷷ᐲ䈪ᾲಣℂ䉕䈚䈢䇮න⧌䇮㪎 ⧌䈭䉌
䈶䈮 㪈㪐 ⧌✢᧚䈱 㪋㪅㪉㪢䇮㪈㪇㪫 䈮䈍䈔䉎䌉䌣䉕␜䈜䇯ᾲಣℂᤨ㑆
䈲䈇䈝䉏䈱✢᧚䉅䋱ᤨ㑆䈪䈅䉎䇯䈇䈝䉏䈱✢᧚䉅ᾲಣℂ᷷ᐲ
䈏਄᣹䈜䉎䈮䈚䈢䈏䈦䈩 㪠㪺 䈏ะ਄䈜䉎䈏䇮䈖䉏䈲 㪤㪾㪙㪉 䈱↢ᚑ
㊂䈏᷷ᐲ䈫౒䈮Ⴧᄢ䈜䉎䈢䉄䈪䈅䉎䇯න⧌✢᧚䈱 㪠㪺 䈲 㪎 ⧌䈅
䉎䈇䈲 㪈㪐 ⧌✢᧚䈱 㪠㪺 䉋䉍䉅ૐ䈇䈏䇮䈖䉏䈲න⧌✢᧚䈪䈲 㪤㪾
䈫 㪙㪂㪪㫀㪚 ጀ䈫䈱⇇㕙䈱㕙Ⓧ䈏ዊ䈘䈒䇮䈚䈢䈏䈦䈩 㪤㪾㪙㪉 䈱↢ᚑ
㊂䈏ዋ䈭䈇䈢䉄䈪䈅䉎䇯৻ᣇ䇮ᾲಣℂ᷷ᐲ䈏 㪤㪾 䈱Ⲣὐ䈪䈅
䉎 㪍㪌㪇㫆㪚 એ਄䈮䈭䉎䈫䇮㪠㪺 䈲᷷ᐲ䈫䈫䉅䈮ᷫዋ䈜䉎䈏䇮䈖䉏䈲⚿
᥏☸䈱☻ᄢൻ䈏ේ࿃䈫⠨䈋䉌䉏䉎䇯䉁䈢䇮㪍㪌㪇㫆㪚 એ਄䈪䈲 㪝㫀㪾㪅㩷
㪉 䈮␜䈚䈢䉋䈉䈮 㪠㪺 䈱䊋䊤䉿䉨䈏ᄢ䈐䈒䈭䉎䈱䈏䉒䈎䉎䇯䈖䉏䈲㩷
㩷
㩷㪝㫀㪾㪅㩷㪉㩷 㩷 㪠㪺㩷㪸㫋㩷㪋㪅㪉㪢㩷㪸㫅㪻㩷㪈㪇㪫㩷㪸㫊㩷㪸㩷㪽㫌㫅㪺㫋㫀㫆㫅㩷㫆㪽㩷㫋㪿㪼㩷㪿㪼㪸㫋㩷㫋㫉㪼㪸㫋㫄㪼㫅㫋㩷
㩷㫋㪼㫄㫇㪼㫉㪸㫋㫌㫉㪼㩷㪽㫆㫉㩷㫊㫀㫅㪾㫃㪼㪃㩷㪎㪄 㪸㫅㪻㩷㪈㪐㪄㪽㫀㫃㪸㫄㪼㫅㫋㩷㫎㫀㫉㪼㫊㪅㩷
㩷
㪤㪾 䈏Ⲣ⸃䈚䈩⴫㕙ᒛജ䈮䉋䉍 㪤㪾 䈏ዪ࿷ൻ䈜䉎䈢䉄䈫⠨䈋䉌
䉏䉎䇯䈚䈢䈏䈦䈩᜛ᢔᴺ✢᧚䈱ᾲಣℂ᷷ᐲ䈲 㪤㪾 䈱Ⲣὐ䈪䈅
䉎 㪍㪌㪇㫆㪚 䉋䉍䉅ૐ䈇᷷ᐲ䈏ᦸ䉁䈚䈇䇯㩷
੹࿁䈱ታ㛎䈪ᓧ䉌䉏䈢ᦨ㜞䈱 㪡㪺 䈲䇮㪋㪅㪉㪢䇮㪈㪇㪫 䈪 㪐㪅㪐㬍
㪈㪇㪋㪘㪆㪺㫄㪉䇮㪉㪇㪫䇮㪌㪫 䈪 㪋㪅㪐㬍㪈㪇㪋㪘㪆㪺㫄㪉 䈪䇮䈠䉏䈡䉏 㪎 ⧌✢᧚
䈭䉌䈶䈮 㪈㪐 ⧌✢᧚䈪ᓧ䉌䉏䈢䇯㩷 㩷
― 118 ―
第82回 2010年度春季低温工学・超電導学会
2B-a05
MgB2 (1)
MgB2 䝞䝹䜽䛾㉸ఏᑟ≉ᛶ㻌
䝡䝍䝭䞁 &
C 䜢ῧຍ䛧䛯 0J%
㻿㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼕㼚㼓㻌㻼㼞㼛㼜㼑㼞㼠㼕㼑㼟㻌㼕㼚㻌㻹㼓㻮㻞㻌㻮㼡㼘㼗㼟㻌㻿㼥㼚㼠㼔㼑㼟㼕㼦㼑㼐㻌㼎㼥㻌㼂㼕㼠㼍㼙㼕㼚㻌㻯㻌㻭㼐㼐㼕㼠㼕㼛㼚㻌
㻌
୰ᒣ㻌 ెጾ䠄᪥ᮏ኱Ꮫ⌮ᕤᏛ㒊䠅䠗㻌 ๓⏣㻌 ✑㻔㼁㼚㼕㼢㼑㼞㼟㼕㼠㼥㻌㼛㼒㻌㼃㼛㼘㼘㼛㼚㼓㼛㼚㼓㻕䠗㻌 ஂಖ⏣ὒ஧䠄᪥ᮏ኱Ꮫ⌮ᕤᏛ㒊䠅㻌
㻺㻭㻷㻭㼅㻭㻹㻭㻌㼅㼛㼟㼔㼕㼠㼍㼗㼑䠄㻯㻿㼀䠅䠈㻌 㻹㻭㻱㻰㻭㻌㻹㼕㼚㼛㼞㼡㻌㻔㼁㻻㼃㻕㻧㻌㻷㼁㻮㻻㼀㻭㻌㼅㼛㼖㼕㻌㻔㻯㻿㼀㻕㻌 㻌
㻱㻙㼙㼍㼕㼘㻦㻌㻹㻼㻰㻬㼚㼕㼔㼛㼚㻙㼡㻚㼚㼑㻚㼖㼜㻌
㻌
7DEOH 6SHFLILFDWLRQRIVDPSOHV
㻝䠊䛿䛨䜑䛻㻌㻌
6DPSOH
9&0J%>ZW@
㔠ᒓ⣔㉸ఏᑟయ䛾୰䛷᭱䜒㧗䛔㉸ఏᑟ㌿⛣ ᗘ䜢ᣢ䛴
0J% 䛻ᑐ䛧䛶䚸-F 䜢ྥୖ䛥䛫䜛䛯䜑䛾ᵝ䚻䛺◊✲䛜⾜䜟䜜
䛶䛔䜛䚹-F 䛾ᨵၿ䛻䛿䚸ῧຍ๣䛸䛧䛶 6L& ➼䛾Ⅳ⣲䜢ྵ䜣䛰
>@
໬ྜ≀䛜᭷ຠ䛷䛒䜛䛸ሗ࿌䛥䜜䛶䛔䜛䚹 ᡃ䚻䛿䚸0J% 䛾ῧຍ๣䛸䛧䛶 9LWDPLQ & 䜢⏝䛔䚸䛭䛾๭
ྜ䜢⣔⤫ⓗ䛻ኚ໬䛥䛫䛯 0J% 䝞䝹䜽䜢స〇䛧䚸䛭䛾⤖ᬗᛶ
㻌
䛸㉸ఏᑟ≉ᛶ䜢ㄪ䜉䛯䛾䛷ሗ࿌䛩䜛䚹
㻌
㻞䠊ᐇ㦂㻌㻌
㻌
⏝䛔䛯ヨ⸆䛿䚸%PP0J䠄PP䠅䛸
㻌
9LWDPLQ&௨ୗ9&䛸グ䛩䛷䛒䜛䚹9&䛾0J%䛻ᑐ䛩䜛㔜㔞
㻌
䝟䞊䝉䞁䝖䛜䛻ᑐᛂ䛩䜛䜘䛖䛻䚸9&䛸%䜢䛭䜜䛮䜜
㻌
⛗㔞䛩䜛䚹䛣䜜䜙䛻ᑐᛂ䛩䜛9&䛸%䛾⤌ྜ䛫䜢ู䚻䛻ΰྜ䛩
㻌
䜛䚹䛣䜜䜙✀㢮䛾ΰྜ⢊䛸%༢య䜢ู䚻䛻▷෉≧䛾䝥䝺䝇ᆺ
㻌
䛻ධ䜜䚸W䛷ศ㛫ຍ㔜䛧䚸ᡂᙧయ䜢స〇䛩䜛䚹䛣䜜䜙䜢$U
㻌
㞺ᅖẼ୰䛷7D⟶䛻ワ䜑䚸䝰䝹ẚ䛷0J% 䛻䛺䜛䜘䛖䛻0J
㻌
⢊ᮎ䜢ῧຍ䛧䛯ᚋ䜰䞊䜽⁐᥋䛷7D⟶䜢ᑒ⟶䛩䜛䚹䛣䛾7D⟶䜢
㻌
▼ⱥ⟶䛻┿✵ᑒධ䛧䚸Υศ䛸Υ᫬㛫䛾ẁ㝵⇕
㻌
ฎ⌮䜢⾜䛖䚹᭱ᚋ䛻వศ䛺0J䜢ྲྀ䜚㝖䛟䛯䜑䛻䚸䛣䛾7D⟶䛻
㻌
✰䜢䛒䛡䛯ᚋ䚸▼ⱥ⟶䛻┿✵ᑒධ䛧䚸Υศ䛾⇕ฎ⌮䜢
㻌
ຍ䛘䚸ṧ␃0J䜢㝖ཤ䛧ヨᩱ䛸䛩䜛䚹ヨᩱ䛾⥴ඖ䜢7DEOH䛻
㻌
♧䛩䚹
㻌
ヨᩱ䛾⾲㠃ᙧ≧䚸⤌ᡂཬ䜃-F䛿6(0䚸;5'䚸648,'䜢⏝
㻌
䛔䛶ㄪ䜉䜛䚹
㻌
㻟䠊⤖ᯝ㻌
㻌
)LJ䛻䚸䛾.ಸ䛾6(0䜲䝯䞊䝆䜢♧䛩䚹䜘
)LJ
6(0LPDJHVRI0J%
㻌
䜚䜒䛸9&䛾ῧຍ䛧䛯㔞䛾ቑຍ䛸ඹ䛻䚸0J%䛾⢏ᚄ䛜
㻌
⣽䛛䛟䛺䛳䛶䛔䜛䛣䛸䛜䜟䛛䜛䚹䜎䛯䚸0J% ⢏ྠኈ䛾ᐦ╔ᛶ
㻌
― 119 ―
7 >.@
%>7@
)LJ %YV-FIRUDOOVDPSOHV
%>7@
-F>$FP @
䛜䜘䛟䛺䛳䛶䛔䜛䜘䛖䛷䛒䜛䚹
;5'䝟䝍䞊䞁䛛䜙䚸䛩䜉䛶䛾ヨᩱ䛾୺┦䛿0J%䛷䛒䜚䚸
ᑡ㔞䛾0J2䛜䛒䜛䛜䚸䜋䜌༢┦ヨᩱ䛷䛒䜛䛣䛸䛜䜟䛛䛳䛯䚹䝸
䞊䝖䝧䝹䝖ゎᯒ䜘䜚ồ䜑䛯ྛヨᩱ䛾᱁ᏊᐃᩘD䛸F䛿䚸9&⃰ᗘ
䛾ቑຍ䛸ඹ䛻䚸D䛿⦰ᑠ䛧䚸F䛿ఙ㛗䛧䛶䛔䜛䚹䜎䛯䚸0J%䛾
㠃䛾್༙ᖜ䛾୍␒ᗈ䛔ヨᩱ䛿䛷䛒䜛䚹
)LJ䛻>.@䛻䛚䛡䜛-F 䛾┤ὶ☢ሙ౫Ꮡᛶ䜢♧䛩䚹-F 䛿
648,'䛷 ᐃ䛧䛯☢໬᭤⥺䜘䜚䚸ᣑᙇ䛥䜜䛯%HDQ䝰䝕䝹䜢⏝
䛔䛶ィ⟬䛧䛯䚹9&⃰ᗘ䛾ቑຍ䛸ඹ䛻㧗☢ሙഃ䛾-F䛜9&↓ῧ
ຍヨᩱ䛾䜘䜚䜒ቑ኱䛧䚸㧗☢ሙഃ䛷䛿䚸ヨᩱ䛾-F䛿᭱䜒
኱䛝䛟䛺䛳䛯䚹
㻌 )LJ䛻ྛヨᩱ%F䛸 %LUU䛻ᑐ䛩䜛 ᗘ౫Ꮡᛶ䜢♧䛩䚹>.@
䛷䛾%F䛿䚸䛜9&↓ῧຍヨᩱ䛾䛾ಸ䚸>.@䛷䛾%LUU
䛿䚸䛜䛾ಸ䛸ቑ኱䛧䛶䛔䜛䚹
௨ୖ䛾䛣䛸䜘䜚9&䛾ῧຍ䛿䚸0J% ⢏䜢ᚤ⣽໬䛧䚸⤖ᬗ⢏
⏺㠃䜢ቑ኱䛥䛫䚸䜎䛯䚸D㍈㛗䜢⦰䜑䚸F㍈㛗䜢ఙᒎ䛥䛫䜛䛣䛸
䛻䜘䜚䚸㟁Ꮚᩓ஘䛜ቑ኱䛧䚸-F 䜔%LUU ཬ䜃%F 䛜㧗☢ሙഃ䛷ᨵ
ၿ䛧䛯䛸⪃䛘䜙䜜䜛䚹䛧䛛䛧䚸9&䛜>ZW@䜎䛷ቑ኱䛩䜛䛸7F
䛾ῶᑡ䛜኱䛝䛟䛺䜚䚸㧗☢ሙഃ䛷䛿䚸%F䛾ቑ኱䛜ศ䛛䜚䛻䛟䛟
䛺䛳䛶䛔䜛䚹
ཧ⪃ᩥ⊩㻌㻌
㻝㻚㻌 6;'RX66ROWDQLDQ-+RUYDW;/:DQJ6+=KRX
0 ,RQHVFX + . /LX 3 0XQURH DQG 0 7RPVLF
³(QKDQFHPHQW RI WKH FULWLFDO FXUUHQW GHQVLW\ DQG IOX[
SLQQLQJ RI 0J% VXSHUFRQGXFWRU E\ QDQRSDUWLFOH 6L&
GRSLQJ´$SSOSK\V/HWW㻌
%&
%LUU
%LUU %&
7>.@
)LJ 7YV%%FDQG%LUU
第82回 2010年度春季低温工学・超電導学会
2B-a06
MgB2 (1)
䉴䊁䊮䊧䉴㍑䉲䊷䉴 㪤㪾㪙㪉 ⚦ᓘ✢᧚䈱ടᎿᕈ䈫⿥વዉ․ᕈ㩷
㪪㫌㫇㪼㫉㪺㫆㫅㪻㫌㪺㫋㫀㫅㪾㩷㫇㫉㫆㫇㪼㫉㫋㫀㪼㫊㩷㪸㫅㪻㩷㫎㫆㫉㫂㪸㪹㫀㫃㫀㫋㫐㩷㫆㪽㩷㫊㫋㪸㫀㫅㫃㪼㫊㫊㩷㫊㫋㪼㪼㫃㩷㫊㪿㪼㪸㫋㪿㪼㪻㩷㪤㪾㪙㪉㩷㫋㪿㫀㫅㩷㫎㫀㫉㪼㫊㩷
㩷
㊄Ỉ㩷 ᣽຦㪃㩷 ጊ↰㩷 ⼾㪃㩷 ᄥಷᎹ㩷 ᕶᴦ䋨᧲ᶏᄢ䋩䋻㩷 ੗਄㩷 ᜏ㇢㪃㩷 ᨦᎹ㩷 ৻ᒄ䋨਻ᄢ䋩䋻㩷 ᾢୖ㩷 ᶈ᣿䋨NIMS䋩㩷
KANAZAWA Masaya, YAMADA Yutaka, TACHIKAWA Kyoji (Tokai University);
INOUE Takuro, KAJIKAWA Kazuhiro (Kyushu University)䋻 KUMAKURA Hiroaki (NIMS)
E-mail :[email protected]
䋱䋮㩷 䈲䈛䉄䈮㩷
MgH2
B
MgB2 ⿥વዉ૕䈲 39 K 䈱㜞䈇⥃⇇᷷ᐲ䉕᦭䈜䉎䈖䈫䈎䉌ᶧ
૕᳓⚛ਛ䋨20 K䋩䉇ᶧ૕䊓䊥䉡䊛ਛ䋨4.2 K䋩䈮䈍䈇䈩䈱೑↪䈏
ᦼᓙ䈘䉏䈩䈇䉎䇯೨ႎ䈪䈲 In-situ PIT ᴺ䉕↪䈇䈩૞⵾䈚䈢䉴
SS tube
䊁䊮䊧䉴㍑/⚐㋕ੑ㊀䉲䊷䉴 MgB2 ✢᧚䈮䈧䈇䈩ႎ๔䈚䈢䈏䇮
ᧄႎ䈪䈲䇮䉴䊁䊮䊧䉴㍑䉲䊷䉴 MgB2 ✢᧚䈱ടᎿᕈ䈫⿥વዉ
Drawing
SS
․ᕈ䈮䈧䈇䈩ႎ๔䈜䉎䇯
MgB2
䋲䋮㩷 ታ㛎ᣇᴺ㩷
Fig. 1 䈮 In-situ PIT ᴺ䈮䉋䉎 MgB2 ✢᧚૞⵾ᣇᴺ䉕␜䈜䇯
MgH2 ☳ᧃ䈍䉋䈶䉝䊝䊦䊐䉜䉴 B ☳ᧃ䉕ᷙว䈚䇮ᄖᓘ 1.0 mmij䇮
ౝᓘ 0.6 mmij 䈱䉴䊁䊮䊧䉴㍑▤䋨SS䋺SUS304䋩䈮లႯ䈚䈢䇯✢
Heat Treatment
SS sheathed MgB2 wire
Fig. 1 Preparation procedure for SS sheathed MgB2 wires.
ᒁ䈐ടᎿ䈮䉋䉍િ✢䈚䇮ᢿ㕙Ⓧ䈏 1/2 䈝䈧ᷫዋ䈜䉎䉋䈉䈮䇮
0.20䌾0.10 mmij 䈱⚦ᓘ✢᧚䉕૞⵾䈚䈢䇯ᾲಣℂ䈲 Ar 㔓࿐᳇
ਛ䈪 630㷄×5 h ⴕ䈦䈢䇯⚦ᓘ✢᧚䉕శቇ㗼ᓸ㏜䋨OM䋩䈍䉋䈶
SEM 䈮䉋䉎⚵❱ⷰኤ䉕ⴕ䈦䈢䇯䊎䉾䉦䊷䉴⎬䈘⹜㛎䈮䉋䉍䉴䊁
䊮䊧䉴䉲䊷䉴ㇱ䈱ടᎿ⎬ൻ௑ะ䉕⺞ᩏ䈚䈢䇯4.2 K 䈮䈍䈔䉎⥃
⇇㔚ᵹ䋨Ic䋩䈱⏛႐ଐሽᕈ䈮䈧䈇䈩䈲‛⾰䊶᧚ᢱ⎇ⓥᯏ᭴
䋨NIMS䋩䈮䈍䈇䈩䇮⥃⇇᷷ᐲ䋨Tc䋩䈮䈧䈇䈩䈲਻Ꮊᄢቇ䈪᷹
Fig. 2 Cross-section of SS sheathed MgB2 wires of
ቯ䈚䈢䇯
0.10㨪0.20 mm in diameter.
䋳䋮㩷 ታ㛎⚿ᨐ䈍䉋䈶⠨ኤ
Table.1 Cross-sectional area and sheath/core ratio of SS
Fig. 2 䈮૞⵾䈚䈢⋥ᓘ 0.20䇮0.14 䈍䉋䈶 0.10 mmij 䈱 MgB2
sheathed wires.
㪺㫉㫆㫊㫊㪄㫊㪼㪺㫋㫀㫆㫅㪸㫃㩷㪸㫉㪼㪸㩷㩷䋨䌭䌭㪉䋩 㫊㪿㪼㪸㫋㪿㪆㪺㫆㫉㪼
㫉㪸㫋㫀㫆
㫆㫍㪼㫉㪸㫃㫃 㪪㪪㩷㫊㪿㪼㪸㫋㪿㩷 㪤㪾㪙㪉㩷㪺㫆㫉㪼
✢᧚ᮮᢿ㕙౮⌀䉕䇮Table. 1 䈮ห✢᧚䈱ฦㇱᢿ㕙Ⓧ䈫䉲䊷䉴/
㪻㫀㪸㫄㪼㫋㪼㫉㩷㫆㪽
㫎㫀㫉㪼㫊㩷㩿㫄㫄㱢㪀
䉮䉝Ყ䉕␜䈜䇯ᢿ㕙Ⓧ䈲䇮䉴䊁䊮䊧䉴㍑䉲䊷䉴ㇱ䇮MgB2 䉮䉝
㪇㪅㪉㪇
㪇㪅㪇㪊㪉㪊
㪇㪅㪇㪉㪊㪍
㪇㪅㪇㪇㪏㪎
㪉㪅㪎㪇
㪇㪅㪈㪋
㪇㪅㪇㪈㪍㪇
㪇㪅㪇㪈㪈㪏
㪇㪅㪇㪇㪋㪉
㪉㪅㪏㪈
㪇㪅㪈㪇
㪇㪅㪇㪇㪏㪉
㪇㪅㪇㪇㪍㪉
㪇㪅㪇㪇㪉㪇
㪊㪅㪈㪋
ㇱ䈫䉅䈮䈾䈿 1/2 䈝䈧ᷫዋ䈚䈩䈍䉍䇮᭎䈰ဋ৻䈮િ✢ടᎿ䈜䉎
䈖䈫䈏䈪䈐䈢䇯䉲䊷䉴/䉮䉝Ყ䈲䇮⚦✢ൻ䈫౒䈮ᄢ䈐䈒䈭䉎௑ะ
䈮䈅䉎䇯䈖䉏䈲䇮䉲䊷䉴㊄ዻ䈏ടᎿ⎬ൻ䈚䇮⋧ኻ⊛䈮 MgB2 䉮
䉝䈱ᣇ䈏✢ᒁ䈐ടᎿ䈘䉏䉇䈜䈒䈭䉎䈢䉄䈫⠨䈋䉌䉏䉎䇯✢ᒁ䈐
100
ടᎿᓟ䈱 0.10 mmij䋨ടᎿ₸ 99䋦䋩䈱䉴䊁䊮䊧䉴㍑䉲䊷䉴ㇱ䈱
䈖䈫䈏䈪䈐䈢䇯䉁䈢䇮630㷄×5 h ᾲಣℂᓟ䈱⎬䈘䈲 404 HV 䈮
ਅ䈏䈦䈢䇯
㩷 Fig. 3 䈮 MgB2 ⚦✢䋨0.20䌾0.10 mmij䋩䈱ᛶ᛫䈱᷷ᐲଐሽᕈ
䉕␜䈜䇯0.20 mmij 䈍䉋䈶 0.10 mmij 䈱 onset Tc 䈲䈠䉏䈡䉏
35.2 K䇮35.0 K 䈪䈅䈦䈢䈏䇮0.14 mmij 䈪䈲 33.4 K 䈫䉇䉇ૐ䈎
䈦䈢䇯
4.2 K䇮⥄Ꮖ⏛႐䋨0 T䋩䈮䈍䈔䉎 Ic ୯䈲䇮0.20 mmij 䈪 34.0 A䇮
0.10 mmij 䈪 7.5 A 䈫䈭䉍䇮MgB2 䉮䉝䈱㕙Ⓧ䈮䈾䈿Ყ଀䈚䇮⥃
⇇㔚ᵹኒᐲ䋨Jc䋩䈱୯䈲䈠䉏䈡䉏 3900 A/mm2 䈍䉋䈶 3750
A/mm2 䈫䈾䈿ห䈛୯䈪䈅䈦䈢䇯䈭䈍䇮䈖䉏䉌䈱 Jc ୯䈲 SS/Fe ੑ
㊀䉲䊷䉴 MgB2 ✢᧚䈱⚂ 1/2䌾1/3 䈫䈭䈦䈢䇯
Resistance (ǡ/m)
䊎䉾䉦䊷䉴⎬䈘䈲 568 HV 䈫ടᎿ⎬ൻ䈚䈢䈏䇮✢ᒁ䈐ടᎿ䈜䉎
80
0.20 mm䕮
0.14 mm䕮
0.10 mm䕮
60
40
20
0
25
30
35
40
45
Temperature (K)
Fig. 3 Temperature dependence of resistance for the SS
sheathed MgB2 wires.
― 120 ―
第82回 2010年度春季低温工学・超電導学会
2B-a07
JT-60
JT-60SA ᐔⴧ⏛႐䉮䉟䊦↪⿥વዉዉ૕䈱⵾૞䈫⹜㛎⚿ᨐ
Fabrication and tests of superconductors for equilibrium field coil of JT-60SA
Current (kA)
㩷
ᧁᵤ㩷ⷐ䋬ᨰ㩷ᅢᢅ䋬᧛਄㩷㓁ਯ䋬࿯ደ㩷ൎᒾ䋬ศ↰㩷ᷡ䋨㪡㪘㪜㪘䋩㪒㩷㩷
የ⧎㩷ືᶈ䋬㜞⇌㩷৻਽䋬ựญ㩷⌀ม䋬ᩉ㩷㐳㐷䋬੹Ꮉା૞䋬ਃᚭ㩷೑ⴕ䋨㪥㪠㪝㪪䋩㩷
KIZU Kaname, KASHIWA Yoshitoshi, MURAKAMI Haruyuki, TSUCHIYA Katsuhiko, YOSHIDA Kiyoshi (JAEA); OBANA
Tetsuhiro, TAKAHATA Kazuya, HAMAGUCHI Shinji, YANAGI Nagato, IMAGAWA Shinsaku, MITO Toshiyuki (NIFS)
E-mail: [email protected]
㩷
㪈䋮䈲䈛䉄䈮㩷
㪡㪫㪄㪍㪇㪪㪘 ⵝ⟎䈱 㪜㪝 䉮䉟䊦䈱䉮䉟䊦ዉ૕䈲 㪥㪹㪫㫀 ⚛✢䉕↪
䈇䈢䉬䊷䊑䊦䊶䉟䊮䊶䉮䊮䉳䉾䊃ဳ㩿㪚㪠㪚㪀ዉ૕䈪䈅䉎㪲㪈㪴䇯ዉ૕䈲䇮
䊜䊷䉦䉋䉍⚊౉䈘䉏䈢⿥વዉ᠐✢䈫䉳䊞䉬䉾䊃䉕ᣣᧄේሶജ⎇
ⓥ㐿⊒ᯏ᭴㩿㪡㪘㪜㪘㪀䊶㇊⃗ᩭⲢว⎇ⓥᚲౝ䈮ᑪ⸳䈘䉏䈢䇮ో
㐳⚂ 㪍㪏㪇㫄 䈱ዉ૕ⶄวൻ⸳஻䈪ⶄวൻ䈜䉎䈖䈫䈪⵾૞䈘䉏䉎䇯
ᧄႎ๔䈪䈲䇮ታᯏ 㪜㪝 ዉ૕⵾ㅧ䈫ಽᵹ㐿ᆎ᷷ᐲ㩿㪫㪺㫊㪀⹜㛎⚿
ᨐ䈮䈧䈇䈩ㅀ䈼䉎䇯㩷
㩷
㪉䋮ዉ૕᭴ㅧ㩷
Fig. 1 Cross Section of EF-H Conductor.
㪜㪝 䉮䉟䊦䈱ㆇォ䉲䊅䊥䉥䈮䈍䈔䉎ዉ૕䈱ᦨᄢ⚻㛎⏛႐䈲
Conductor (6.2T)
㪍㪅㪉㪫 䈪䈅䉎䈢䉄䇮㪜㪝 䉮䉟䊦ዉ૕䈲 㪥㪹㪫㫀 ⚛✢䉕↪䈇䉎䇯㪥㪹㪫㫀
Conductor (4.0T)
⚛✢䈲䇮㪡㪫㪄㪍㪇㪪㪘 ↪䈮ᣂⷙ䈮⸳⸘䊶⵾૞䈘䉏䈢⚛✢䈪䇮䊆䉾
35
Strand x 450
䉬䊦䊜䉾䉨䉕ᣉ䈘䉏䈩䈇䉎䇯㪜㪝 䉮䉟䊦ዉ૕䈲㒰ᾲ․ᕈ䉕ะ਄
30
䈘䈞䉎䈢䉄䈮ዉ૕ਛᔃ䈮䉴䊌䉟䊤䊦䈪૞䉌䉏䉎಄ළ䉼䊞䊮䊈
䊦䉕ㅊട䈚䈢 㪚㪠㪚 ဳ䈱ᒝ೙಄ළዉ૕䈪䈅䉎䇯㪜㪝 䉮䉟䊦ዉ૕
25
䈲䇮౞ᒻ䊌䉟䊒䈮᠐✢䉕ᝌ౉䈚䈢ᓟ䇮⍱ᒻ䈮࿶❗䊶ᚑဳ䈜䉎
20
ᣇᴺ䉕↪䈇䉎䇯㪜㪝 ዉ૕䈲䇮䈠䈱ㆇォ⏛႐䊶㔚ᵹ䈮ᔕ䈛䈩䇮
㪋㪅㪏㪫㪄㪉㪇㫂㪘 ↪䈱 㪜㪝㪄㪣 ዉ૕䈫 㪍㪅㪉㪫㪄㪉㪇㫂㪘 ↪䈱 㪜㪝㪄㪟 ዉ૕䈱 㪉
15
⒳㘃䈱ዉ૕䉕⵾૞䈜䉎䇯㪝㫀㪾㪅㩷㪈 䈮ዉ૕䈱ᢿ㕙࿑䉕␜䈜䇯㩷
10
㩷
㪊䋮ዉ૕ⶄวൻ⸳஻䈫ዉ૕⵾૞⁁ᴫ㩷
4.0T
6.2T
5
ዉ૕ⶄวൻ⸳஻䈪䈲䇮䉁䈝䇮㪜㪝 ↪䉳䊞䉬䉾䊃㩿න㐳 㪈㪊㫄㪀䉕
⦱⛮䈑ṁធ䈜䉎䈖䈫䈪ᦨ㐳䈪 㪌㪏㪌㫄 䈱㐳ዤ䉳䊞䉬䉾䊃䉕⵾૞䈜
0
5.5
6
6.5
7
7.5
䉎䇯䈠䈱ᓟ䇮䉡䉟䊮䉼䈪⿥વዉ᠐✢䉕㐳ዤ䉳䊞䉬䉾䊃ౝ䈮ᒁ䈐
Tcs
(K)
ㄟ䉖䈣ᓟ䈮䇮䉮䊮䊌䉪䉲䊢䊮ⵝ⟎䈫๭䈳䉏䉎ⵝ⟎䈪ᦨ⚳ᢿ㕙
Fig. 2 Tcs measurements results of EF-H Conductor.
ᒻ⁁䈮ᚑဳ䈚䈭䈏䉌䇮⋥ᓘ 㪊㫄 䈱䊄䊤䊛䈮Ꮞ䈐ข䉎䇯㩷
⹜㛎䈲䇮㪪㪟㪼 ᵹ㊂ 㪋㪾㪆㫊 䈪䈍䈖䈭䈇䇮㪋㪅㪇㩷㵨㩷㪍㪅㪉㩷㪫㪃㩷㪈㪇㩷㵨㩷㪊㪇㩷
㪡㪫㪄㪍㪇㪪㪘 䈮૶↪䈜䉎 㪚㪠㪚 ዉ૕䈱✚㐳䈲 㪋㪋㫂㫄 䈅䉍䇮䈠䈱ṁ
㫂㪘 䈱▸࿐䈪䈱 㪫㪺㫊 䉕ขᓧ䈚䈢㩿㪝㫀㪾㪅㩷 㪉㪀䇯Ყセ䈫䈚䈩䇮㪈 ᧄ䈱⿥
ធㇱ䈲 㪋㪊㪇㪇 ▎ᚲ⒟ᐲ䈫䈭䉎䇯⿥વዉ䉮䉟䊦䈲䊃䉦䊙䉪ⵝ⟎ᧄ
વዉ⚛✢䈱 㪫㪺㫊 ᷹ቯ⚿ᨐ䈎䉌䈱੍ᗐ୯䉕ታ✢䈪␜䈚䈢䇯ਔ
૕䈮⸳⟎ᓟ䈲ኈᤃ䈮䈲ಽ⸃ୃℂ䈪䈐䈭䈇䈱䈪䇮ṁធㇱ䈱ᬌ
⠪䈲Ყセ⊛⦟䈒৻⥌䈚䈩䈍䉍䇮ਛᔃ䉴䊌䉟䊤䊦䇮ዉ૕ᚑဳ䈭䈬
ᩏ䈏㊀ⷐ䈪䈅䉎䇯ṁធㇱ䈱ᬌᩏ䈫䈚䈩䇮㩿㪈㪀㩷 㪚㪚㪛 䉦䊜䊤䈮䉋䉎
䈮䉋䉎ᄢ䈐䈭ഠൻ䈏䈭䈇䈖䈫䈏䉒䈎䈦䈢䇯㪫㪺㫊 䈲 㪍㪅㪉㩷 㪫 ㅢ㔚㔚
䉳䊞䉬䉾䊃ౝ஥ṁធㇱ䈱ⵣᵄᬌᩏ䇮㩿㪉㪀㩷 䉳䊞䉬䉾䊃ౝṁធㇱ䈱
ᵹ 㪉㪇䌫㪘 䈮䈍䈇䈩 㪍㪅㪉㪈㪢 䈫䈭䉍䇮ᣣ᰷䈮䉋䉍วᗧ䈘䉏䈢ᦨૐⷐ
䉯䊷䉭䊷䉳ㅢㆊ⏕⹺ᬌᩏ䇮㩿㪊㪀㩷 㪯 ✢ㅘㆊ⹜㛎ᬌᩏ䇮㩿㪋㪀㩷 㪟㪼 䊥
᳞୯䈱 㪌㪅㪏㪉㪢 䉕਄࿁䈦䈢䇯㩷
䊷䉪⹜㛎ᬌᩏ䇮㩿㪌㪀㩷⠴࿶ജ䊶᳇ኒ⹜㛎䈏ⴕ䉒䉏䉎䇯㩷
㩷
⿥વዉ᠐✢䉕䇮㐳ዤ䉳䊞䉬䉾䊃䈮ᒁ䈐ㄟ䉃㓙䈮䈲䉳䊞䉬䉾䊃
㪌䋮䉁䈫䉄㩷
䈫᠐✢䈫䈱㑆䈱៺ᡂ䈱䈢䉄䇮㪈㪇㩷 㫂㪥 ⒟ᐲ䈱ᒁㄟജ䈏ᔅⷐ䈫䈭
㪜㪝㪄㪟 ዉ૕䈱 㪫㪺㫊 ᷹ቯ䉕ⴕ䈇䇮⋡ᮡ୯䉕㆐ᚑ䈚䈢䇯䈖䈱⚿
䉎䈖䈫䈏੍᷹䈘䉏䈢䇯᠐✢䉕ᒁ䈐ㄟ䉃䈢䉄䈮䈲䇮ᒁ䈐ㄟ䉂↪䉡
ᨐ䉋䉍䇮㪜㪝㪄㪟 ⿥વዉዉ૕䈱㊂↥⵾ㅧ䈏ᐔᚑ 㪉㪉 ᐕ 㪊 ᦬䉋䉍㐿
䉟䊮䉼䈱䊪䉟䊟䈫᠐✢䈫䉕ធ⛯䈜䉎ᔅⷐ䈏䈅䉎䇯䈠䈱ធ⛯ᣇᴺ
ᆎ䈘䉏䇮ᐔᚑ 㪉㪉 ᐕ 㪋 ᦬ 㪈㪉 ᣣᤨὐ䈪䇮㪊 ᧄ䈱ዉ૕䈏ቢᚑ䈚䈢䇯
䈫䈚䈩䇮䊪䉟䊟䈫ធ⛯น⢻䈭㌃䉴䊥䊷䊑䈮᠐✢䉕ᝌ౉䈚䇮䈎䈚
ᐔᚑ 㪉㪉 ᐕ 㪐 ᦬䉁䈪䈮䇮㪜㪝㪄㪟 ዉ૕䉕 㪈㪇 ᧄ⵾૞䈚䇮䈠䈱ᓟ䇮
䉄䉎ធ⛯ᣇᴺ䉕㐿⊒䈚䈢䇯䈖䈱ធ⛯ᣇᴺ䈪 㪊㪇㩷㫂㪥 䈱ᒁᒛജ䈮
㪚㪪 ዉ૕䈱⵾૞䉕㐿ᆎ䈜䉎੍ቯ䈪䈅䉎䇯㩷
⠴䈋䉎䈖䈫䉕⹜㛎䈮䉋䉍⏕⹺䈚䈢䇯ታ㓙䈮ታᯏ 㪜㪝㪄㪟 ⿥વዉ᠐
㩷
✢ 㪋㪋㪋㩷 㫄 䉕㐳ዤ䉳䊞䉬䉾䊃䈮ᒁ䈐ㄟ䉖䈪䉂䈢䈫䈖䉐䇮ᔅⷐ䈭ᒁ
ෳ⠨ᢥ₂㩷
ㄟജ䈲 㪎㪅㪎㩷 㫂㪥 ⒟ᐲ䈪䈅䉍䇮ᧄᚻᴺ䈏᦭↪䈪䈅䉎䈖䈫䈏䉒䈎䈦
㪈㪅㩷 㪢㪅㩷 㪢㫀㫑㫌㪃㩷 㪼㫋㩷 㪸㫃㪅㪑㩷 㪘㪹㫊㫋㫉㪸㪺㫋㫊㩷 㫆㪽㩷 㪚㪪㪡㩷 㪚㫆㫅㪽㪼㫉㪼㫅㪺㪼㪃㩷 㪭㫆㫃㪅㩷 㪏㪇㩷
䈢䇯㩷
㩿㪉㪇㪇㪐㪀㩷㫇㪅㪈㪉㪏㩷
㩷
㪉㪅㩷
㪢㪅㩷 㪢㫀㫑㫌㪃㩷 㪼㫋㩷 㪸㫃㪅㪑㩷 㪘㪹㫊㫋㫉㪸㪺㫋㫊㩷 㫆㪽㩷 㪚㪪㪡㩷 㪚㫆㫅㪽㪼㫉㪼㫅㪺㪼㪃㩷 㪭㫆㫃㪅㩷 㪎㪏㩷
㪋䋮㪜㪝㪄㪟 ዉ૕䈱ಽᵹ㐿ᆎ᷷ᐲ᷹ቯ⚿ᨐ㩷
㩿㪉㪇㪇㪏㪀㩷㫇㪅㪊㪍㩷
ታᯏ䉮䉟䊦↪ዉ૕䈱㊂↥䉕㐿ᆎ䈜䉎䈢䉄䈮䈲䇮⿥વዉ⁁
㪊㪅㩷 㪫㪅㩷 㪦㪹㪸㫅㪸㪃㩷 㪼㫋㩷 㪸㫃㪅㪑㩷 㪘㪹㫊㫋㫉㪸㪺㫋㫊㩷 㫆㪽㩷 㪚㪪㪡㩷 㪚㫆㫅㪽㪼㫉㪼㫅㪺㪼㪃㩷 㪭㫆㫃㪅㩷 㪎㪏㩷
ᘒ䈪䈱ዉ૕ᕈ⢻䉕⏕⹺䈜䉎䈖䈫䈏ᔅⷐ䈪䈅䉎䇯․䈮䇮ᗐቯ䈘
㩿㪉㪇㪇㪏㪀㩷㫇㪅㪊㪎㩷
䉏䉎ㆇォ᧦ઙ䈪䈱 㪫㪺㫊 ᷹ቯ䈏ᔅⷐ䈪䈅䉎䇯ᩭⲢว⑼ቇ⎇ⓥ
ᚲ㩿㪥㪠㪝㪪㪀䈱⹜㛎⸳஻䈲⏛႐䈫㔚ᵹ୯䈎䉌ᧄ⹜㛎䉕ⴕ䈉䈱䈮ච
ಽ䈭⢻ജ䈏䈅䉎䈢䉄䇮㪡㪘㪜㪘 䈫 㪥㪠㪝㪪 䈫䈱౒ห⎇ⓥ䈫䈚䈩⹜㛎
⸳஻䈫䉰䊮䊒䊦䈱⸳⸘䊶⵾૞䉕ㅴ䉄䈩䈐䈢㪲㪉㪃㩷㪊㪴䇯㩷
― 121 ―
第82回 2010年度春季低温工学・超電導学会
2B-a08
JT-60
㻶㼀㻙㻢㻜㻿㻭 ᖹ⾮☢ሙ䝁䜲䝹⏝㉸ఏᑟᑟయ䛾Ᏻᐃᛶホ౯㻌
㻿㼠㼍㼎㼕㼘㼕㼠㼥㻌㼑㼢㼍㼘㼡㼍㼠㼕㼛㼚㻌㼛㼒㻌㼟㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼛㼞㼟㻌㼒㼛㼞㻌㼑㼝㼡㼕㼘㼕㼎㼞㼕㼡㼙㻌㼒㼕㼑㼘㼐㻌㼏㼛㼕㼘㻌㼛㼒㻌㻶㼀㻙㻢㻜㻿㻭㻌
I300
㻹㻽㻱㻌㻌㼙㻶㻛㼏㼏
20
In du ctive
H ea te r
42
85
㻌
ᮧୖ㻌 㝧அ䠈ᕷẟ㻌 ᑑ୍䠈ᮌὠ㻌 せ䠈ᅵᒇ㻌 ຾ᙪ䠈ྜྷ⏣㻌 Ύ䠄ཎᏊຊᶵᵓ䠅㻧㻌
ᑿⰼ㻌 ဴᾈ䠈㧗⏿㻌 ୍ஓ䠈℈ཱྀ㻌 ┿ྖ䠈ᰗ㻌 㛗㛛䠈௒ᕝ㻌 ಙస䠈୕ᡞ㻌 ฼⾜䠄㻺㻵㻲㻿䠅㻌
㻹㼁㻾㻭㻷㻭㻹㻵㻌㻴㼍㼞㼡㼥㼡㼗㼕䠈㻌 㻵㻯㻴㻵㻳㻱㻌㼀㼛㼟㼔㼕㼗㼍㼠㼟㼡䠈㻌 㻷㻵㼆㼁㻌㻷㼍㼚㼍㼙㼑䠈㻌 㼀㻿㼁㻯㻴㻵㼅㻭㻌㻷㼍㼠㼟㼡㼔㼕㼗㼛䠈㻌 㼅㻻㻿㻴㻵㻰㻭㻌㻷㼕㼥㼛㼟㼔㼕㻌㻔㻶㻭㻱㻭㻕㻧㻌
㻻㻮㻭㻺㻭㻌㼀㼑㼠㼟㼡㼔㼕㼞㼛䠈㻌 㼀㻭㻷㻭㻴㻭㼀㻭㻌㻷㼍㼦㼡㼥㼍䠈㻌 㻴㻭㻹㻭㻳㼁㻯㻴㻵㻌㻿㼔㼕㼚㼖㼕㻘㻌
㼅㻭㻺㻭㻳㻵㻌㻺㼍㼓㼍㼠㼛䠈㻌 㻵㻹㻭㻳㻭㼃㻭㻌㻿㼔㼕㼚㼟㼍㼗㼡䠈㻌 㻹㻵㼀㻻㻌㼀㼛㼟㼔㼕㼥㼡㼗㼕㻌㻔㻺㻵㻲㻿㻕㻌
㻱㻙㼙㼍㼕㼘㻦㻌㼙㼡㼞㼍㼗㼍㼙㼕㻚㼔㼍㼞㼡㼥㼡㼗㼕㻬㼖㼍㼑㼍㻚㼓㼛㻚㼖㼜㻌
㻌
㻝䠊䛿䛨䜑䛻㻌
௨ୖ䛾⤖ᯝ䜘䜚䚸㏻㟁㟁ὶ䛜ᑠ䛥䛟䛺䜛䛸Ᏻᐃᛶ䛿ᛴ㏿䛻
㻶㼀㻙㻢㻜㻿㻭 ⿦⨨䛾ᖹ⾮☢ሙ㻔㻱㻲㻕䝁䜲䝹䛿䚸᭱኱⤒㦂☢ሙ䛜
㧗䛟䛺䜚䚸ᐃ᱁䛾 㻞㻜㻌 㼗㻭 䛷䛿䛛䛺䜚Ᏻᐃ䛻㐠㌿䛷䛝䜛䛣䛸䛜ศ
㻢㻚㻞㼀 䛸ẚ㍑ⓗᑠ䛥䛔䛯䜑䚸㻺㼎㼀㼕 ⣲⥺䜢⏝䛔䛯䜿䞊䝤䝹䞉䜲䞁䞉
䛛䛳䛯䚹㏻㟁㟁ὶ 㻞㻜㻌 㼗㻭 䛾ሙྜ䚸㼀㼏㼟 䝬䞊䝆䞁䛜 㻜㻚㻟㻌 㻷 ௨ୖ
䝁䞁䝆䝑䝖ᑟయ䛻䜘䜚〇స䛥䜜䜛䚹ᐇᶵ䛻౑⏝䛥䜜䜛ᑟయ䛾㔞
䛒䜜䜀 㻹㻽㻱 䛿ᩘⓒ 㼙㻶㻛㼏㼏 ௨ୖ䛷䛒䜛䛣䛸䛛䜙䚸㼀㼏㼟 䝬䞊䝆䞁
⏘䛻ඛ❧䛳䛶䚸ᑟయ䛾㉸ఏᑟ≉ᛶ䜢☜ㄆ䛩䜛䛯䜑䚸㻺㼎㼀㼕 ᑟ
䜢 㻝㻌 㻷 ௨ୖ䛻䛩䜛䛸䛔䛖タィᇶ‽䛿䚸㻱㻲 䝁䜲䝹䜢Ᏻᐃ䛻㐠㌿
య䜢⏝䛔䛯ᛶ⬟ホ౯ヨ㦂䜢᪥ᮏཎᏊຊ◊✲㛤Ⓨᶵᵓ
䛩䜛ୖ䛷ጇᙜ䛺ᇶ‽䛷䛒䜛䛣䛸䛜☜ㄆ䛷䛝䛯䚹㻌
㻔㻶㻭㻱㻭㻕䛸᰾⼥ྜ⛉Ꮫ◊✲ᡤ㻔㻺㻵㻲㻿㻕䛜ඹྠ䛷ᐇ᪋䛧䛯䚹㻌
㻌
ᛶ⬟ホ౯ヨ㦂䛿䚸ศὶ㛤ጞ ᗘ䠄㼀㼏㼟䠅 ᐃヨ㦂䛚䜘䜃Ᏻ
ཧ⪃ᩥ⊩㻌
ᐃᛶヨ㦂䛜ᐇ᪋䛥䜜䚸㼀㼏㼟 䛚䜘䜃 㻹㻽㻱㻌 㻔㻹㼕㼚㼕㼙㼡㼙㻌 㻽㼡㼑㼚㼏㼔㻌
㻝㻚㻌 㻷㻚㻌㻷㼕㼦㼡㻘㻌㼑㼠㻌㼍㼘㻚㻦㻌㻲㼡㼟㻚㻌㻱㼚㼓㻚㻌㻰㼑㼟㻚㻌㻤㻠㻌㻔㻞㻜㻜㻥㻕㻌㼜㼜㻚㻌㻝㻜㻡㻤䇵㻝㻜㻢㻞㻌
㻱㼚㼑㼞㼓㼥㻕䛜 ᐃ䛥䜜䛯䚹䛣䜜䜎䛷䛻䚸㻺㼎㼀㼕 ⣲⥺䛾㐺⏝ྍ⬟ᛶ
㻞㻚㻌㻴㻚㻌㻹㼡㼞㼍㼗㼍㼙㼕㻘㻌㼑㼠㻌㼍㼘㻚㻦㻌䇿㻿㼠㼍㼎㼕㼘㼕㼠㼥㻌㼍㼚㼐㻌㻽㼡㼑㼚㼏㼔㻌㼀㼑㼟㼠㻌㼒㼛㼞㻌㻺㼎㼀㼕㻌
䜢ᐇド䛩䜛䛯䜑䛾䝥䝻䝖䝍䜲䝥ᑟయ䛸䚸㧗☢ሙ䠄㻢㻚㻞㼀䠅䜢Ⓨ⏕䛩
㻯㻵㻯㻌㻯㼛㼚㼐㼡㼏㼠㼛㼞㻌㼛㼒㻌㻶㼀㻙㻢㻜㻿㻭㻌㻱㼝㼡㼕㼘㼕㼎㼞㼕㼡㼙㻌㻲㼕㼑㼘㼐㻌㻯㼛㼕㼘䇿㻌㼠㼛㻌㼎㼑㻌
䜛䝁䜲䝹䛷฼⏝䛩䜛 㻱㻲㻙㻴 ᑟయ䛾ᛶ⬟ホ౯ヨ㦂䜢ᐇ᪋䛧䛯䚹
㼜㼡㼎㼘㼕㼟㼔㼑㼐㻌㼕㼚㻌㻵㻱㻱㻱㻌㼀㼞㼍㼚㼟㻚㻌㻭㼜㼜㼘㻚㻌㻿㼡㼜㼑㼞㼏㼛㼚㼐㻚㻘㻌㼂㼛㼘㻚㻌㻞㻜㻌㻔㻞㻜㻝㻜㻕㻌
ᮏㅮ₇䛷䛿䛣䜜䜙䛾ᛶ⬟ホ౯ヨ㦂䛻䛴䛔䛶ሗ࿌䛩䜛䚹㻌
㻌
㻞䠊ᛶ⬟ホ౯ヨ㦂㻌
690
ᛶ⬟ホ౯ヨ㦂䛿䝥䝻䝖䝍䜲䝥ᑟయ䛸 㻱㻲㻙㻴 ᑟయ䛾஧✀㢮䛷
Vo lta g e Ta p
Th e rmo me te r
ᐇ᪋䛧䛯䚹ྛᑟయ䛾ㅖඖ䜢 㼀㼍㼎㼘㼑㻌㻝 䛻♧䛩䚹ヨ㦂䝃䞁䝥䝹䛿䚸
1220
V4
V3
㻲㼕㼓㻚㻌㻝㻌 䛻♧䛩䜘䛖䛻ᑟయ䜢┤ᚄ 㻟㻜㻜㼙㼙 䛾෇⎔㒊䜢ᣢ䛴䝷䜿䝑
V5
V1
V2
䝖ᆺ䛾ᙧ≧䛻ຍᕤ䛧䛶䛚䜚䚸䝇䝥䝸䝑䝖䝁䜲䝹䛻䜘䜚෇⎔㒊䛻୍
T1
ᵝ䛺☢ሙ䜢༳ຍ䛧ヨ㦂䜢ᐇ᪋䛧䛯䚹ヨ㦂୰䛿䚸ᑟయ䝃䞁䝥䝹
T3 T2
V1 0
V9
䛻ὶ䛩㉸⮫⏺ᅽ䝦䝸䜴䝮㻔㻿㻴㼑㻕䛾 ᗘ䜢ไᚚ䛩䜛䛣䛸䛷䚸䝃䞁
V6
V8
䝥䝹 ᗘ䜢ㄪᩚ䛧䛯㼇㻝㼉䚹㻌
V7
㻌
㻲㼕㼓㻚㻌㻝㻌㼀㼑㼟㼠㻌㼟㼍㼙㼜㼘㼑㻌㻔㻱㻲㻙㻴㻕㻌
㼀㼏㼟 ᐃヨ㦂䛿䚸㻿㻴㼑 ᗘ䜢ᚎ䚻䛻ୖ᪼䛥䛫 ᐃ㒊䛻
㻝㻜P㼂㻛㼙 䛾㟁ᅽ䛜⏕䛨䛯 ᗘ䜢 㼀㼏㼟 䛸䛧䛯䚹☢ሙᙉᗘ䜢ኚ䛘
㻤㻜㻜
㻽㼡㼑㼚㼏㼔䠄㻱㻲㻙㻴㻌㻌㻌㻌㻌㻌㻌㻮㻩㻠㻚㻜㼀㻌䂴㼀㻩㻜㻚㻞㻷㻕
䛶 㼀㼏㼟 䜢 ᐃ䛧䛯⤖ᯝ䚸⣲⥺䛾⮫⏺㟁ὶ≉ᛶ䛛䜙ண 䛥䜜䜛
㻽㼡㼑㼚㼏㼔䠄㻼㼞㼛㼠㼛㼠㼥㼜㼑㻌㻮㻩㻠㻚㻜㼀㻌䂴㼀㻩㻜㻚㻝㻷㻕
㻣㻜㻜
㻽㼡㼑㼚㼏㼔䠄㻼㼞㼛㼠㼛㼠㼥㼜㼑㻌㻮㻩㻠㻚㻜㼀㻌䂴㼀㻩㻜㻚㻠㻷㻕
್䛸䜋䜌ྠ䛨⤖ᯝ䜢ᚓ䛯䚹㼀㼏㼟 ᐃヨ㦂䛾⤖ᯝ䛻䛴䛔䛶䛿䚸
㻽㼡㼑㼚㼏㼔䠄㻼㼞㼛㼠㼛㼠㼥㼜㼑㻌㻮㻩㻠㻚㻤㼀㻌䂴㼀㻩㻜㻚㻞㻷㻕
㻢㻜㻜
㻞㻮㻙㼍㻜㻣 䛻䛶ሗ࿌䛩䜛䚹㻌
Ᏻᐃᛶヨ㦂䛷䛿䚸෇⎔㒊୰ኸ௜㏆䛻㛗䛥⣙ 㻟㻜㻌 㼙㼙䚸㻝㻤㻜
㻡㻜㻜
䝍䞊䞁䛾ㄏᑟຍ⇕⏝䝁䜲䝹䜢タ⨨䛧䚸䛣䛾㒊ศ䜢ຍ⇕䛩䜛䛣䛸
㻠㻜㻜
䛷䜽䜶䞁䝏䜢Ⓨ⏕䛥䛫䛯䚹ㄏᑟຍ⇕⏝䝁䜲䝹䛻ὶ䜜䛯㏻㟁㟁
㻟㻜㻜
ὶ䜢⏝䛔䛶䚸㟁☢⏺ゎᯒ䛻䜘䜚ᑟయ㒊䛻⏕䛨䜛 㟁ὶ䜢ィ⟬
䛧䚸ㄏᑟຍ⇕䛻䜘䜛ᢞධ⇕㔞䜢ồ䜑䛯㼇㻞㼉䚹㻌
㻞㻜㻜
Ᏻᐃᛶヨ㦂䛿ᑟయ䛻౪⤥䛩䜛 㻿㻴㼑 䛾 ᗘ䠄㻡㻚㻥䡚㻣㻚㻞㻷䠅䚸
㻝㻜㻜
ᅽຊ䠄㻜㻚㻡㻡䡚㻜㻚㻤㻡㻹㻼㼍䠅䚸ὶ㔞䠄㻞㻚㻤䡚㻡㻚㻜㼓㻛㼟䠅䛚䜘䜃☢ሙ䠄㻠㻚㻜
㻜
䡚㻢㻚㻞㼀䠅䚸㏻㟁㟁ὶ䠄㻞㻜䡚㻟㻜㼗㻭䠅䜢ኚ໬䛥䛫ྛ᮲௳䛻䛚䛡䜛
㻝㻡
㻞㻜
㻞㻡
㻟㻜
㻟㻡
㻹㻽㻱 䜢 ᐃ䛧䛯䚹㻹㻽㻱 䛾 ᐃ⤖ᯝ䠄㏻㟁㟁ὶ䛚䜘䜃 㼀㼏㼟 䝬
㻿㼍㼙㼜㼘㼑㻌㻯㼡㼞㼞㼑㼚㼠㻌㼗㻭
䞊䝆䞁౫Ꮡᛶ䠅䜢 㻲㼕㼓㻚㻌㻞 䛚䜘䜃 㻲㼕㼓㻚㻟 䛻♧䛩䚹㻌
㻲㼕㼓㻚㻌㻞㻌㻰㼑㼜㼑㼚㼐㼑㼚㼏㼑㻌㼛㼒㻌㻹㻽㻱㻌㼛㼚㻌㼟㼍㼙㼜㼘㼑㻌㼏㼡㼞㼞㼑㼚㼠㻌
㻌
㻤㻜㻜
㼀㼍㼎㼘㼑㻌㻝㻌㻿㼜㼑㼏㼕㼒㼕㼏㼍㼠㼕㼛㼚㻌㼛㼒㻌㼏㼛㼚㼐㼡㼏㼠㼛㼞㻌
㻌
3URWRW\SH
㻣㻜㻜
()+
6WUDQGGLDPHWHU>PP@
&XQRQ&XUDWLR
1XPEHURI6&VWUDQGV
&DEOLQJSDWWHUQ
[[[[
[[[
)LQDOWZLVWSLWFK>PP@
-DFNHWLQQHUVL]H>PP@ [ [
-DFNHWRXWHUVL]H>PP@ [ [
㻹㻽㻱㻌㼙㻶㻛㼏㼏
㻢㻜㻜
― 122 ―
㻡㻜㻜
㻠㻜㻜
㻟㻜㻜
㻽㼡㼑㼚㼏㼔䠄㻱㻲㻙㻴㻌㻌㻌㻌㻌㻌㻌㻮㻩㻠㻚㻜㼀㻌㻵㻩㻟㻜㼗㻭㻕
㻽㼡㼑㼚㼏㼔䠄㻼㼞㼛㼠㼛㼠㼥㼜㼑㻌㻮㻩㻠㻚㻜㼀㻌㻵㻩㻞㻜㼗㻭㻕
㻽㼡㼑㼚㼏㼔䠄㻼㼞㼛㼠㼛㼠㼥㼜㼑㻌㻮㻩㻠㻚㻜㼀㻌㻵㻩㻞㻡㼗㻭㻕
㻽㼡㼑㼚㼏㼔䠄㻼㼞㼛㼠㼛㼠㼥㼜㼑㻌㻮㻩㻠㻚㻜㼀㻌㻵㻩㻟㻜㼗㻭㻕
㻽㼡㼑㼚㼏㼔䠄㻱㻲㻙㻴㻌㻌㻌㻌㻌㻌㻌㻮㻩㻢㻚㻞㼀㻌㻵㻩㻞㻜㼗㻭㻕
㻞㻜㻜
㻝㻜㻜
㻜
㻜㻚㻜
㻜㻚㻞
㻜㻚㻠
㻜㻚㻢
㼀㼑㼙㼜㼑㼞㼍㼠㼡㼞㼑㻌㻹㼍㼞㼓㼕㼚㻌㻷
㻜㻚㻤
㻝㻚㻜
㻲㼕㼓㻚㻌㻟㻌㻰㼑㼜㼑㼚㼐㼑㼚㼏㼑㻌㼛㼒㻌㻹㻽㻱㻌㼛㼚㻌㼠㼑㼙㼜㼑㼞㼍㼠㼡㼞㼑㻌㼙㼍㼞㼓㼕㼚㻌
第82回 2010年度春季低温工学・超電導学会
2B-a09
JT-60
㪡㪫㪄㪍㪇㪪㪘 ᐔⴧ⏛႐䉮䉟䊦↪䊒䊨䊃䉺䉟䊒ဳ㩷
㪥㪹㪫㫀 䉬䊷䊑䊦䊶䉟䊮䊶䉮䊮䉳䉾䊃ዉ૕䈱⥄Ꮖ⏛႐᷹ቯ㩷
㪪㪼㫃㪽㩷㫄㪸㪾㫅㪼㫋㫀㪺㩷㪽㫀㪼㫃㪻㩷㫄㪼㪸㫊㫌㫉㪼㫄㪼㫅㫋㫊㩷㫆㫅㩷㪸㩷㫇㫉㫆㫋㫆㫋㫐㫇㪼㩷
㪥㪹㪫㫀㩷㪺㪸㪹㫃㪼㪄㫀㫅㪄㪺㫆㫅㪻㫌㫀㫋㩷㪺㫆㫅㪻㫌㪺㫋㫆㫉㩷㪽㫆㫉㩷㪡㪫㪄㪍㪇㪪㪘㩷㪜㪝㩷㪺㫆㫀㫃㩷
― 123 ―
Self magnetic field in the x direction [mT]
Voltage [mV]
22
22
1220 mm
㩷
የ⧎㩷 ືᶈ㪃㩷 㜞⇌㩷 ৻਽㪃㩷 ựญ㩷 ⌀ม㪃㩷 ੹Ꮉ㩷 ା૞㪃㩷 ਃᚭ㩷 ೑ⴕ㩷 㩿㪥㪠㪝㪪㪀䋻ᧁᵤ㩷 ⷐ㪃㩷 ᧛਄㩷 㓁ਯ㪃㩷 ࿯ደ㩷 ൎᒾ㪃㩷 ศ↰㩷 ᷡ㩷 㩿㪡㪘㪜㪘㪀㩷
㪦㪙㪘㪥㪘㩷㪫㪼㫋㫊㫌㪿㫀㫉㫆㪃㩷㪫㪘㪢㪘㪟㪘㪫㪘㩷㪢㪸㫑㫌㫐㪸㪃㩷㪟㪘㪤㪘㪞㪬㪚㪟㪠㩷㪪㪿㫀㫅㫁㫀㪃㩷㪠㪤㪘㪞㪘㪮㪘㩷㪪㪿㫀㫅㫊㪸㫂㫌䋬㪤㪠㪫㪦㩷㪫㫆㫊㪿㫀㫐㫌㫂㫀㩷㩿㪥㪠㪝㪪㪀㩷
㪒㩷㪢㪠㪱㪬㩷㪢㪸㫅㪸㫄㪼䋬㪤㪬㪩㪘㪢㪘㪤㪠㩷㪟㪸㫉㫌㫐㫌㫂㫀䋬㪰㪦㪪㪟㪠㪛㪘㩷㪢㫀㫐㫆㫊㪿㫀㩷㩿㪡㪘㪜㪘㪀㩷 㩷
㪜㪄㫄㪸㫀㫃㪑㩷㫆㪹㪸㫅㪸㪅㫋㪼㫋㫊㫌㪿㫀㫉㫆㪗㪣㪟㪛㪅㫅㫀㪽㫊㪅㪸㪺㪅㫁㫇㩷
㩷
㪊㪅㩷 䌔㪅㩷 㪦㪹㪸㫅㪸㪃㩷 㪼㫋㩷 㪸㫃㪅㪑㩷 㪘㪹㫊㫋㫉㪸㪺㫋㫊㩷 㫆㪽㩷 㪚㪪㪡㩷 㪚㫆㫅㪽㪼㫉㪼㫅㪺㪼㪃㩷 㪭㫆㫃㪅㩷 㪎㪏㩷
㪈䋮䈲䈛䉄䈮㩷㩷
㩿㪉㪇㪇㪏㪀㩷㫇㪅㪊㪎㩷
㪉㪇㪇㪎 ᐕᐲ䈎䉌䇮ᩭⲢว⑼ቇ⎇ⓥᚲ㩿㪥㪠㪝㪪㪀䈱ᄢဳ⿥વዉዉ
SHe inlet SHe outlet
૕⹜㛎ⵝ⟎䉕૶↪䈚䈩䇮㪡㪫㪄㪍㪇㪪㪘 䊒䊤䉵䊙ᐔⴧ⏛႐㩿㪜㪝㪀䉮䉟
䊦↪䉬䊷䊑䊦䊶䉟䊮䊶䉮䊮䉳䉾䊃㩿㪚㪠㪚㪀ዉ૕䉕⹜㛎䈜䉎⸘↹䈏䇮
㪥㪠㪝㪪 䈫ᣣᧄේሶജ⎇ⓥ㐿⊒ᯏ᭴㩿㪡㪘㪜㪘㪀䈱౒ห䈪㐿ᆎ䈘䉏䈢䇯
ᧄ⸘↹䈪䈲䇮㪚㪠㪚 ዉ૕䈱㔚ᵹಽᵹ㐿ᆎ᷷ᐲ㩿㪫㪺㫊㪀᷹ቯ䈫቟ቯ
ᕈ⹜㛎䉕ታᣉ䈚䇮ዉ૕ᕈ⢻䈱⹏ଔ䉕ⴕ䈦䈩䈇䉎㪲㪈㪃㪉㪴䇯䉁䈢䇮
ฦ⹜㛎᧦ઙ䈮䈍䈔䉎 㪚㪠㪚 ዉ૕ౝ䈱㔚ᵹಽᏓ䉕ℂ⸃䈜䉎䈢䉄
Terminal
䈮䇮㪚㪠㪚 ዉ૕䈱⥄Ꮖ⏛႐᷹ቯ䉕ⴕ䈦䈩䈇䉎䇯ᧄ⻠Ṷ䈪䈲䇮䌅䌆
䉮䉟䊦↪䊒䊨䊃䉺䉟䊒ဳ 㪚㪠㪚 ዉ૕䈱 㪫㪺㫊 ᷹ቯ෸䈶቟ቯᕈ⹜㛎
V10
V1
䈮䈍䈔䉎ዉ૕䈱⥄Ꮖ⏛႐᷹ቯ䈮䈧䈇䈩⊒⴫䈜䉎䇯㩷
Film heater
㪉䋮䊒䊨䊃䉺䉟䊒ဳ 㪚㪠㪚 ዉ૕䉰䊮䊒䊦㩷㩷
for temperature control
T3
䊒䊨䊃䉺䉟䊒ဳ 㪚㪠㪚 ዉ૕䈲䇮㪥㫀 䊜䉾䉨䉕ᣉ䈚䈢 㪋㪏㪍 ᧄ 㪥㪹㪫㫀
⚛✢䉕䇮㪊䋨㪈 ᰴ᠐䉍䋩㬍㪊䋨㪉 ᰴ᠐䉍䋩㬍㪊䋨㪊 ᰴ᠐䉍䋩㬍㪊䋨㪋 ᰴ᠐
T2
T1
V2
䉍䋩㬍㪍䋨ᦨ⚳᠐䉍䋩䈱䉬䊷䊑䊥䊮䉫䊌䉺䊷䊮䈪᠐䉍ว䉒䈞䈩䈍䉍䇮
V9
V8
V3
: Voltage tap
㪋 ᰴ᠐䉍䈫ᦨ⚳᠐䉍䈮䈲䉴䊁䊮䊧䉴䊁䊷䊒䈏Ꮞ䈎䉏䈩䈇䉎䇯䉁
: Thermometer
䈢䇮ዉ૕ਛᔃㇱ䈮䈲䇮䉴䊌䉟䊤䊦▤䈏㈩⟎䈘䉏䈩䈇䉎䇯㪝㫀㪾㪅㪈
V7
V4
Hall sensors
䈮䇮ዉ૕䉰䊮䊒䊦䈱᭎⇛࿑䉕␜䈜䇯ዉ૕䉰䊮䊒䊦䈲䊤䉬䉾䊃
V6
V5
ᒻ⁁䈪䈅䉍䇮䉰䊮䊒䊦䈱౞Ⅳㇱ䈮䈲䇮ᄖㇱ⏛႐⊒↢↪䉴䊒䊥
䉾䊃䉮䉟䊦䈮䉋䈦䈩䇮ဋ৻䈭⏛႐䉕ශน䈜䉎䈖䈫䈏น⢻䈪䈅䉎
Inductive heater
300 mm
㩷
㪲㪈㪴䇯ዉ૕䉰䊮䊒䊦䈮䈲䇮㔚࿶䉺䉾䊒䇮᷷ᐲ⸘䇮䊖䊷䊦⚛ሶ䇮
㪝㫀㪾㪅㪈㩷㪪㪺㪿㪼㫄㪸㫋㫀㪺㩷㫍㫀㪼㫎㩷㫆㪽㩷㫋㪿㪼㩷㪺㫆㫅㪻㫌㪺㫋㫆㫉㩷㫊㪸㫄㫇㫃㪼㩷
෸䈶⺃ዉ䊍䊷䉺䊷䈏⸳⟎䈘䉏䈩䈇䉎䇯㪝㫀㪾㪅㪉 䈮䇮㪚㪠㪚 ዉ૕䈱๟
22
Hall sensor
࿐䈮㈩⟎䈚䈢 㪌 䈧䊖䊷䊦⚛ሶ㩿㪙㪇㪋䌾㪙㪇㪎㪀䈱㈩⟎࿑䉕␜䈜䇯
CICC
B04
䊖䊷䊦⚛ሶ䈲䇮䉴䊒䊥䉾䊃䉮䉟䊦䈎䉌䈱ᄖㇱ⏛႐䈱ᓇ㗀䉕シᷫ
B07
䈚䇮਌䈧⺃ዉ䊍䊷䉺䊷䈎䉌⊒↢䈜䉎⏛႐䈱ᓇ㗀䉕ฃ䈔䈭䈇䉋䈉
y
䈭૏⟎䈮㈩⟎䈚䈢䇯㩷
B05
㪊䋮቟ቯᕈ⹜㛎ᤨ䈮䈍䈔䉎⥄Ꮖ⏛႐᷹ቯ㩷
x
㩷 ᧄታ㛎䈪䈲䇮䉰䊮䊒䊦౞Ⅳㇱ䈻䈱ශട⏛႐ 㪋㩷 㪫䇮䉰䊮䊒䊦
z
ዉ૕䈻䈱ㅢ㔚㔚ᵹ୯ 㪉㪇㩷 㫂㪘䇮ଏ⛎಄ᇦᵹ㊂ 㪋㩷 㪾㪆㫊䇮࿶ജ㩷 㪇㪅㪍㩷
B06
B08
Unit : mm
㪤㪧㪸 䈮଻ᜬ䈚䈢⁁ᘒ䈪䇮⺃ዉ䊍䊷䉺䊷䈮䉋䉍䉰䊮䊒䊦ዉ૕䈻
㩷
㪝㫀㪾㪅㪉㩷㪣㪸㫐㫆㫌㫋㩷㫆㪽㩷㫋㪿㪼㩷㪿㪸㫃㫃㩷㫊㪼㫅㫊㫆㫉㫊㩷㪸㫉㫆㫌㫅㪻㩷㫋㪿㪼㩷㪚㪠㪚㪚㩷
ᾲශട䉕ⴕ䈇䇮䈠䈱㓙䇮䉰䊮䊒䊦ዉ૕䈎䉌䈱⊒↢䈘䉏䉎 x ᣇ
㪙㪇㪋
㪙㪇㪍
㪙㪇㪏
ะ䈱⥄Ꮖ⏛႐䈫䉰䊮䊒䊦ዉ૕㔚࿶䉕᷹ቯ䈚䈢䇯㪝㫀㪾㪅㪊 䈮䇮䉪䉣
㪭㪋㪌
㪙㪇㪌
㪙㪇㪎
䊮䉼䈏⊒↢䈚䈢㓙䈱⥄Ꮖ⏛႐෸䈶ዉ૕䉰䊮䊒䊦㔚࿶㩿㔚࿶䉺
6
䉾䊒 㪭㪋㪄㪭㪌 㑆㪀䉕␜䈜䇯䉰䊮䊒䊦ዉ૕䈮ᾲශട䉕ⴕ䈦䈢㓙䇮
㔚࿶䈏ᕆỗ䈮⊒↢䈜䉎䈫䈫䉅䈮䇮⥄Ꮖ⏛႐䈱ᄌൻ䈏⿠䈖䈦䈢䇯
200
5
䈠䈱ᓟ䇮⊒↢㔚࿶䈏 㪋㪅㪍㩷㫄㪭 䉕⿥䈋䈩䇮✭䉇䈎䈮Ⴧട䈚䈩䈇䉎
㓙䇮⥄Ꮖ⏛႐䈱ᄌൻ䈏෼䉁䈦䈢䇯એ਄䈱⚿ᨐ䈎䉌䇮ዉ૕䉰䊮
100
4
䊒䊦䈻䈱ᾲශട䈮䉋䈦䈩䇮ዉ૕䉰䊮䊒䊦䈪Ᏹવዉવ᠞䈏⿠䈖
䉍䇮䈠䉏䈮઻䈦䈩䇮ዉ૕ౝ䈪䈱㔚ᵹォᵹ⃻⽎䈏⊒↢䈚䈢䈫⠨
3
䈋䉌䉏䉎䇯䈠䈱ᓟ䇮ዉ૕䉰䊮䊒䊦䈏⿥વዉ⁁ᘒ䈎䉌Ᏹવዉ⁁
0
ᘒ䈮ቢో䈮ォ⒖䈚䈩䇮㔚ᵹォᵹ⃻⽎䈏෼䉁䉍䇮ዉ૕䉰䊮䊒䊦
2
ౝ䈱㔚ᵹಽᏓ䈏ဋ৻䈮䈭䈦䈩䈇䉎䈫⠨䈋䉌䉏䉎䇯㩷
-100
㩷 ᧄ᷹ቯ⚿ᨐ䈮ၮ䈨䈐䇮✢㔚ᵹ䉕↪䈇䈩 㪚㪠㪚 ዉ૕ౝ䈱㔚ᵹ
ಽᏓ䉕ᬌ⸽䈚䈢⸃ᨆ⚿ᨐ෸䈶 㪫㪺㫊 ᷹ቯᤨ䈮䈍䈔䉎⥄Ꮖ⏛႐
1
᷹ቯ䈱⚿ᨐ䈲䇮ᒰᣣ⊒⴫䈜䉎䇯㩷
-200
ෳ⠨ᢥ₂㩷
0
0
1
2
3
4
5
6
㪈㪅㩷 㪢㪅㩷 㪢㫀㫑㫌㪃㩷 㪼㫋㩷 㪸㫃㪅㪑㩷 㪘㪹㫊㫋㫉㪸㪺㫋㫊㩷 㫆㪽㩷 㪚㪪㪡㩷 㪚㫆㫅㪽㪼㫉㪼㫅㪺㪼㪃㩷 㪭㫆㫃㪅㩷 㪎㪏㩷
㩿㪉㪇㪇㪏㪀㩷㫇㪅㪊㪍㩷
Time [s]
㩷
㪉㪅㩷 㪟㪅㩷㪤㫌㫉㪸㫂㪸㫄㫀㪃㩷㪼㫋㩷㪸㫃㪅㪑㩷㪘㪹㫊㫋㫉㪸㪺㫋㫊㩷㫆㪽㩷㪚㪪㪡㩷㪚㫆㫅㪽㪼㫉㪼㫅㪺㪼㪃㩷㪭㫆㫃㪅㩷㪏㪇㩷
㪝㫀㪾㪅㪊㩷㪤㪼㪸㫊㫌㫉㪼㫄㪼㫅㫋㩷㫉㪼㫊㫌㫃㫋㩷㫆㪽㩷㫋㪿㪼㩷㫊㪼㫃㪽㩷㫄㪸㪾㫅㪼㫋㫀㪺㩷㪽㫀㪼㫃㪻㩷㫀㫅㩷㫋㪿㪼㩷
㩿㪉㪇㪇㪐㪀㩷㫇㪅㪈㪉㪐㩷
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第82回 2010年度春季低温工学・超電導学会
2B-a10
JT-60
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― 124 ―
第82回 2010年度春季低温工学・超電導学会
2B-a11
JT-60
㪡㪫㪄㪍㪇㪪㪘 䉰䊷䊙䊦䉲䊷䊦䊄䈱⸳⸘䈫⹜૞㩷
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਄㊀ⷐ䈪䈅䉎䇯ᧄ⻠Ṷ䈪䈲䇮㪭㪭㪫㪪 䈱⹜૞䉕ⴕ䈇䇮㪭㪭㪫㪪 ⵾
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䋨㪚㪫㪪䋩䇮䈠䈚䈩 㪭㪭㪫㪪 䈫 㪚㪫㪪 䉕ធ⛯䈜䉎 㪧㪫㪪 䈪᭴ᚑ䈘䉏䉎䇯
㪝㫀㪾㪅㪈 Ꮐ࿑䈮䊃䊨䉟䉻䊦ᣇะ 㪉㪇 ᐲಽ䈱ో䉰䊷䊙䊦䉲䊷䊦䊄䉕
␜䈜䇯㪭㪭㪫㪪 䈫 㪧㪫㪪 䈱᡼኿₸䈲ᯏ᪾⎇⏴䈮䉋䉍䈫䉅䈮 㪇㪅㪈㪌 䈪
䈅䉎䇯㪚㪫㪪 䈲䉴䊁䊮䊧䉴䊌䊈䊦䋱ᨎ䉕಄ᇦ㈩▤䈪಄ළ䈚䇮ቶ᷷
஥䈎䉌䈱᡼኿䈲 㪤㪣㪠 䈪ૐᷫ䈜䉎䇯㩷
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䊘䊨䉟䉻䊦ᣇะ䈮 㪉 ▎ᚲ㔚᳇⛘✼䈘䉏䈩䈍䉍䇮⚵┙ᤨ䈲䊃䊨䉟
䉻䊦ᣇะ䈮 㪈㪏 ಽഀ䈘䉏䈢 㪭㪭㪫㪪 䉕ᯏ᪾✦⚿䈚䈩⚵਄䈕䉎䇯
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㪈㪇㪇㫄㫄 䈎䉌 㪈㪌㪇㫄㫄 䈱▸࿐䈪ᄌൻ䈜䉎䇯㩷
㩷
㪋䋮㪠㫅㪹㫆㪸㫉㪻㩷㪭㪭㪫㪪㩷 ⹜૞㩷
㪭㪭㪫㪪 䈱⹜૞䈲 㪝㫀㪾㪅㪈 ฝ࿑䈱䉋䈉䈮䊃䊨䉟䉻䊦ᣇะ 㪈㪇 ᐲಽ䇮
䊘䊨䉟䉻䊦ᣇะ䈲 㪠㫅㪹㫆㪸㫉㪻 ஥䈱䉂䈱 㪭㪭㪫㪪 䉕⹜૞䈚䇮㪌㫄㫄 એ
ౝ䈱⵾૞౏Ꮕ䉕⋡ᮡ䈫䈚䈢䇯᧚⾰䈲 㪪㪬㪪㪊㪇㪋 䉕↪䈇䈢䇯㪝㫀㪾㪅㪉
䈫 㪝㫀㪾㪅㪊 䈮⹜૞ 㪭㪭㪫㪪 䉕␜䈜䇯⹜૞䈮䈍䈇䈩䈲䇮ṁធᄌᒻ䉕
ૐᷫ䈜䉎䈢䉄䈱ᝄേᑼᔕജ㒰෰ⵝ⟎䈱ലᨐ䇮㪭㪭㪫㪪 ⚵┙ᤨ
䈮䈍䈔䉎ṁធᄌᒻ㊂䇮෸䈶 㪭㪭㪫㪪 䈱ㅘ⏛₸䉕᷹ቯ䈚䈢䇯䉁䈝
ᝄേᑼᔕജ㒰෰䉕㐳䈘 㪉㫄 䈱 㪭㪭㪫㪪 䉰䊮䊒䊦䈪⹜䉂䈢⚿ᨐ䇮
ṁធᄌᒻ㊂䈏 㪉㪎㫄㫄 䈎䉌 㪈㪊㫄㫄 䈮ᷫዋ䈚䇮䈠䈱ലᨐ䈏⏕⹺䈪
䈐䈢䇯䉁䈢 㪭㪭㪫㪪 ⚵┙ᓟ䇮ᦨ⚳⊛䈭⵾૞౏Ꮕ䈲㫧㪊㫄㫄 䈫䈭䉍䇮
⋡ᮡ౏Ꮕ䉕ḩ⿷䈜䉎䈖䈫䈏䉒䈎䈦䈢䇯ᦨᓟ䈮 㪭㪭㪫㪪 ฦⷐ⚛䈱
ㅘ⏛₸䉕᷹ቯ䈚䈢⚿ᨐ䇮಄ᇦ㈩▤䈱 㪩㪎㪌 ᦛ䈕ㇱ䈮䈍䈇䈩䇮
ㅘ⏛₸䈏 㪉㪅㪌 䈮䈭䉎䈖䈫䈏᣿䉌䈎䈮䈭䈦䈢䇯㩷
㪌䋮䉁䈫䉄㩷
㪈㪇 ᐲಽ 㪠㫅㪹㫆㪸㫉㪻㩷㪭㪭㪫㪪 䈱⹜૞䉕ⴕ䈇䇮㫧㪊㫄㫄 䈱⵾૞౏Ꮕ
䉕㆐ᚑ䈚䈢䇯㐳䈘 㪉㫄 䈱䉰䊮䊒䊦䈮䈍䈇䈩䇮ᝄേᑼᔕജ㒰෰
ⵝ⟎䈮䉋䉎ṁធᄌᒻ㊂䈱ૐᷫ䉕⏕⹺䈜䉎䈖䈫䈏䈪䈐䈢䇯䉁䈢
಄ᇦ㈩▤䈱 㪩㪎㪌 ᦛ䈕ㇱ䈮䈍䈇䈩䇮ㅘ⏛₸䈏 㪉㪅㪌 䈮䈭䉎䈖䈫䉅
᣿䉌䈎䈫䈭䈦䈢䇯㩷
㩷
ෳ⠨ᢥ₂㩷
㪈㪅 㪢㪅㩷㪰㫆㫊㪿㫀㪻㪸㪃㩷㪼㫋㩷㪸㫃㪅㪑㩷㪛㪼㫊㫀㪾㫅㩷㪸㫅㪻㩷㪚㫆㫅㫊㫋㫉㫌㪺㫋㫀㫆㫅㩷㫆㪽㩷㪡㪫㪄㪍㪇㪪㪘㩷
㪪㫌㫇㪼㫉㪺㫆㫅㪻㫌㪺㫋㫀㫅㪾㩷㪤㪸㪾㫅㪼㫋㩷㪪㫐㫊㫋㪼㫄㪃㩷㪘㪧㪝㪘㪃㩷㪧㪉㪎㩷㩿㪉㪇㪇㪐㪀㩷㫇㪅㪉㩷
㪉㪅 㪢㪅㩷㪢㪸㫄㫀㫐㪸㪃㩷㪼㫋㩷㪸㫃㪅㪑㩷㪘㪹㫊㫋㫉㪸㪺㫋㫊㩷㫆㪽㩷㪚㪪㪡㩷㪚㫆㫅㪽㪼㫉㪼㫅㪺㪼㪃㩷㪭㫆㫃㪅㩷㪏㪈㩷
㩿㪉㪇㪇㪐㪀㩷㫇㪅㪌㪎㩷
― 125 ―
CTS
PTS
6.5m
VVTS
㪝㫀㪾㪅㧝㩷 㪦㫍㪼㫉㪸㫃㫃㩷㪉㪇㩷㪻㪼㪾㫉㪼㪼㩷㫋㪿㪼㫉㫄㪸㫃㩷㫊㪿㫀㪼㫃㪻㩷㩿㫃㪼㪽㫋㪀㩷 㩷
㪸㫅㪻㩷㫀㫅㪹㫆㪸㫉㪻㩷㪭㪭㪫㪪㩷㩿㫉㫀㪾㪿㫋㪀㩷
㪝㫀㪾㪅㪊㩷㪫㫉㫀㪸㫃㩷㫄㫆㪻㪼㫃㩷㫆㪽㩷㪈㪇㩷㪻㪼㪾㫉㪼㪼㩷㫀㫅㪹㫆㪸㫉㪻㩷㪭㪭㪫㪪㩷
第82回 2010年度春季低温工学・超電導学会