Proceedings of the 2nd Annual Meeting of Particle Accelerator Society of Japanand the 30th Linear Accelerator Meeting in Japan (July 20 - 22, 2005, Tosu Japan)

HIGH-POWER TEST OF L-BAND KLYSTRON FOR SUPER-CONDUCTING
RF TEST FACILITY (STF) AT KEK KLYSTRON TEST HALL
K. Nakao1,, M. Yoshida, S. Michizono, T. Takenaka, S. Fukuda,
High Energy Accelerator Research Organization(KEK)
1-1 Oho, Tsukuba, 305-0801
Abstract
L-band 5MW klystrons are required to use for the KEK STF (Super-conducting RF Test Facility) RF source. Inorder to save the cost and to construct the test facility quickly, reuse of a klystron, which was operated in the JHP morethan 10 years ago, was considered. Evaluation test was conducted using the modulator in the S-band linac under thecondition of the short rf pulse of 2Ps in the KEK klystron test hall. Cathode activity and the capability to output 5MW
were confirmed in this test.

-'-㩂㩡㨼㩇㩎㩥㩧㩍㩇㩎㩘㨺㩣ߦ߅ߌࠆᄢ㔚ജ㧸㩔㩨㩧㩎㩨㩂㩡㨼㩇㩎㩥㩧ߩᄢ㔚ജ⹜㛎ߩ㆑޿߇1-߆ߤ߁߆╬ࠍ⏕⹺ߔࠆߎߣߢ޽ࠆ‫ߎޕ‬ߩ⏕⹺⹜㛎ࠍ㔚ሶ㓁㔚ሶ౉኿ེߩ4(ⵝ⟎ࠍ↪޿ߡⴕߞߚߩ߇ᧄⓂߩႎ๔ߢ޽ࠆ‫⹜ޕ‬㛎ߪ㔚ሶ㓁㔚ሶ౉኿ེߩࠢ࡜ࠗࠬ࠻ࡠࡦ⹜㛎ࡎ࡯࡞ߢ‫ޔ‬ㅢᏱ5ࡃࡦ࠼/9ࠢ࡜ࠗࠬ࠻ࡠࡦ⹜㛎ⵝ⟎㧔ᦨㄭ‫ޔ‬/9࡮%ࡃࡦ࠼ࠢ࡜ࠗࠬ࠻ࡠࡦ߽⹜㛎ߒߡ޿ࠆ㧕ࠍ↪޿ߚ4(ࡄ࡞ࠬ᏷ᢙOUߩ⹜㛎ࠍⴕߞߚ‫ᧄޕ‬Ⓜߢߘߩ⚿ᨐߦߟ޿ߡႎ๔ߔࠆ‫ޕ‬㧝㧚ߪߓ߼ߦᐕߩ+642ߩ൘๔ߦࠃࠅILCߪ⿥㔚ዉᛛⴚߦࠃࠅㅴ߼ࠄࠇࠆߎߣߦߥࠅ‫ޔ‬-'-ߢ߽⿥㔚ዉߦࠃࠆᛛⴚ㐿⊒߇ㅴ߼ࠄࠇࠆߎߣߦߥࠅ‫⿥ޔ‬㔚ዉ4(⹜㛎ⵝ⟎ STF)ߩPhase1࡮2⸘↹[1]߇┙᩺ߐࠇߚ‫ޕ‬
ߎߩ56(㨯2JCUGߩ4(Ḯ=?ߦ㑐ߒߡߪᐕᧃ߹ߢߦࠞ࠶ࡊ࡜࡯⹜㛎 4(㔚ജ㧝/9⒟ᐲ ࠍ‫ޔ‬ᐕᧃ߹ߢߦߪࠢ࡜ࠗࠝࡕࠫࡘ࡯࡞߹ߢᑪ⸳ࠍ⚳߃4(⹜ 㛎 ࠍ ⚳ ߃ ࠆ ߎ ߣ ߇ ⷐ ᳞ߐࠇߡ޿ࠆ‫ߡ޿⛯ޕ‬ᐕ᦬ߦࡆ࡯ࡓ⹜㛎ࠍⴕ߁੍ቯߢ޽ࠆ‫ߩߎޕ‬56(ࠍ┙ߜ਄ߍࠆߦ㓙ߒߡ‫ޔ‬ᛛⴚ⊛‫⽶ߦ⊛↪⾌ޔ‬ᜂࠍシߊߔࠆߚ߼ߦ-'-߇ᜬߞߡ޿ࠆ.ࡃࡦ࠼ߩ⾗↥ߩᵴ↪ࠍ⹜ߺߡ޿ࠆ‫߇ߟ৻ߩߘޕ‬ᐕ೨ߦዷ㐿ߐࠇߚ,2#4%ߩ೨りߢ޽ࠅ๟ᵄᢙ)*\ࠍណ↪ߒߡ޿ߚ,*2 ,CRCPGUG*CFTQP2TQLGEV ߩ⾗↥=?ߢ
޽ࠆ‫ߦ․ޕ‬.ࡃࡦ࠼ᄢ㔚ജࠢ࡜ࠗࠬ࠻ࡠࡦߣߒߡߪ಴ജ/9‫ޔ‬๟ᵄᢙ)*\‫ޔ‬4(ࡄ࡞ࠬ᏷㧞OU‫➅ޔ‬㄰ߒ*\ߩ઀᭽ߩ߽ߩ߇ⷐ᳞ߐࠇߡ޿ࠆ߇‫ޔ‬ᣂⷙߦ⾼౉ߔࠆߣ⚊ᦼ߇ࡩ᦬߆߆ࠅ‫ޔ‬ᣧߊ߆ࠄḰ஻ߔࠆߩߪ࿎㔍ߢ޽ࠆ‫৻ޕ‬ᣇߢᐕ㑆ୖᐶ౉ࠅߒߡ޿ߚ๟ᵄᢙ߇)*\ߩࠢ࡜ࠗࠬ࠻ࡠࡦ ᣥ࠻ࡓ࠰ࡦ␠㧧
6*# ߇-'-ߦ޽ࠆߩߢ‫ࠍࠇߎޔ‬ౣ⹏ଔߔࠆߎߣ
ߪ56(㧙4(Ḯߦߣߞߡߪ㊀ⷐߥ૏⟎ઃߌߦߥࠆ‫ᧄޕ‬⺰ಽߪߎߩ.ࡃࡦ࠼ࠢ࡜ࠗࠬ࠻ࡠࡦߩౣ⹏ଔ⹜㛎ߦ㑐ߔࠆ߽ߩߢ޽ࠆ‫ޕ‬56(4(Ḯߪ㔚ሶ㓁㔚ሶ౉኿ེߩ4(ࠣ࡞࡯ࡊߢૐ㔚ജ4(‫⹜ࡦࡠ࠻ࠬࠗ࡜ࠢޔ࠲࡯࡟ࡘࠫࡕޔ‬㛎‫ޔ‬㔚ജಽ㈩♽ ┙૕࿁〝♽ ߹ߢฃߌᜬߞߡ޿ࠆ‫ࠇߘޕ‬ߙࠇߩㇱಽ߇⃻࿷ㅴⴕᒻߢㅴࠎߢ޿ࠆ‫ޕ‬.ࡃࡦ࠼ߩ
ࠢ࡜ࠗࠬ࠻ࡠࡦࠍౣ⹏ଔߔࠆߦᒰߚߞߡ56(㧙4(Ḯߩ઀᭽ߢ⹜㛎ߔࠆᔅⷐߪߥ޿‫ߪ⊛⋡ޕ‬ᐕ㑆ୖᐶ౉ࠅߒߡ޿ߚ▤߇໧㗴ߥߊ૶↪ߢ߈ࠆ߆ߤ߁߆‫ޔ‬෸߮,*2⸘↹ߣ56(ߢߪ๟ᵄᢙ߇⧯ᐓ⇣ߥࠆߩߢߘ1㧞㧚.㩔㩨㩧㩎㩨㨯㩂㩡㨼㩇㩎㩥㩧㧙6*#ߦߟ޿ߡ೨┨ߢㅀߴߚࠃ߁ߦ੹࿁⹜㛎ߒߚ.ࡃࡦ࠼ࠢ࡜ࠗ
ࠬ࠻ࡠࡦߪᐕ߆ࠄᆎ߹ߞߚ,*2⸘↹ߩߚ߼ߦ⾼౉ߐࠇઁ⠪ߢᐕߦ.ࡃࡦ࠼઀᭽߇ᄌᦝߦߥߞߚ
ᤨὐߢ߅⬿౉ࠅߒߚ߽ߩߢ޽ࠆ‫⴫ޕ‬㧝ߦ6*#ߣ
56(4(ߩ㧞บ⋡ߣߒߡ⾼౉ਛߩ6*%ߩ⻉రࠍ߹ߣ ߼ ߚ ‫ ޕ‬,*2 ߢ ߪ ᢥ ₂ =? ߦ ޽ ࠆ ㅢ ࠅ ‫ ޔ‬๟ ᵄ ᢙ)*㨦ߢᦨᄢ㨗8‫ޔ‬4(ࡄ࡞ࠬ᏷PU‫➅ޔ‬㄰
ߒ*\ߩ⹜㛎߇ⴕࠊࠇߚ‫ޕ‬⸘↹䉪䊤䉟䉴䊃䊨䊮-272-

Phase-I-1

Phase-I-2

TH2104A

TH2104C

ㆇォ๟ᵄᢙMH䌺

1296

1300䊙䉟䉪䊨䍃䊌䊷䊎䉝䊮䉴㱘䌐䇭

2.12.1

2.1

kV136

136

128

േ૞㔚࿶

E-mail: katsumi. nakao @kek.jp

JHP
TH2104A

1300

䊎䊷䊛㔚ᵹ

A

100

10095

䊎䊷䊛䊌䊦䉴᏷(70%-70%)

Ps

650

1700

1700

RF䊌䊦䉴᏷(90%-90%)

Ps

600

1370

1370

➅㄰䈚

Hz

50

55

಴ജ㔚ജ㩿వ㗡୯䋩

MW

555

಴ജ㔚ജ㩿ᐔဋ୯䋩

㫂㪮

150

37.5

37.5

೑ᓧ

䌤㪙

47

47

50

ല₸

%

45

45

46

Proceedings of the 2nd Annual Meeting of Particle Accelerator Society of Japanand the 30th Linear Accelerator Meeting in Japan (July 20 - 22, 2005, Tosu Japan)࿑㧸ࡃࡦ࠼ࠢ࡜ࠗࠬ࠻ࡠࡦ ฝ ߣ࠰ࠤ࠶࠻࿑㧸ࡃࡦ࠼㨯ࠢ࡜ࠗࠬ࠻ࡠࡦࠕ࠶࠮ࡦࡉ࡝ߣዉᵄ▤♽㨯ᄢ㔚ജ᳓⽶⩄㧟㧚ࠢ࡜ࠗࠬ࠻ࡠࡦૐ࿶⹜㛎࿑ߦ੹࿁⹜㛎ࠍⴕߞߚ㧸ࡃࡦ࠼ߩࠢ࡜ࠗࠬ࠻ࡠࡦࠍ␜ߔ‫ޔߪࡦࡠ࠻ࠬࠗ࡜ࠢࠆߔ↪૶ޕ‬೨ㅀߩㅢࠅᐕߦ⾼౉ߒ‫ޔ‬,*2ߢㆇォᓟ‫ޔ‬ᐕએ਄ୖᐶߦ଻▤ߐࠇߡ޿ߚ߽ߩߢ޽ࠆ‫ဳޕ‬ฬߪ‫ޔ‬ᣥ࠻ࡓ࠰ࡦ␠ ⃻࠲࡟ࠬ␠ ⵾ߩ6*㧭ߢ⻉ర୯ߦߟ޿ߡߪ⴫ߦ␜ߒߚߒߚㅢࠅߢ޽ࠆ‫⹜ޕ‬㛎ߪ⃻࿷㓁㔚ሶ㨯㔚ሶ࡜ࠗ࠽࠶ࠢߩ㧿ࡃࡦ࠼㨯ࠢ࡜ࠗࠬ࠻ࡠࡦߢ૶↪
ߒߡ޿ࠆࡄ࡞ࠬ࠻࡜ࡦࠬ‫ࠬࡦ࡜࠻࠲࡯ࡅޔ‬෸߮ࡄ࡞ࠬ࠻࡜ࡦࠬ࠲ࡦࠢࠍ↪޿ߡⴕߞߚ‫ޕ‬㧿ࡃࡦ࠼㨯ࠢ࡜ࠗࠬ࠻ࡠࡦߩࡅ࡯࠲ߣࡅ࡯࠲࠻࡜ࡦࠬߣߩࠦࡦ࠲ࠢ࠻ߪࠬࡊ࡝ࡦࠣࠍ↪޿ߡ޿ࠆ߇6*㧭ߢߪࠦ ࡦ ࠲ ࠢ ࠻ ߩ ᣇ ᴺ ߇ ⇣ ߥ ߞߡ޿ࠆߩߢ࿑㧝ߩࠞ࠰࡯࠼ਅㇱߦ޽ࠆ࠰ࠤ࠶࠻ࠍ⵾૞ߒߡࠦࡦ࠲ࠢ࠻ࠍ࿑ߞߚ‫ޕ‬56(ߦ߅ߌࠆⵝ⟎ߢ߽⣕⌕ߩኈᤃߐࠍ⠨ᘦߒߎߎߢ↪޿ߚᣇᴺࠍណ↪ߔࠆ‫ޕ‬ㅢᏱߩ㧿ࡃࡦ࠼㨯ࠢ࡜ࠗࠬ࠻ࡠࡦߩฃߌ౉ࠇ⹜㛎ߦ߅޿ߡߪ㜞࿶⹜㛎ࠍⴕ߁೨ߦࠞ࠰࡯࠼ߩᵴᕈᐲࠍ⏕⹺ߔࠆߚ߼ߦૐ࿶(⋥ᵹ㧝㨗V)ߢߩࠛࡒ࠶࡚ࠪ
ࡦ․ᕈ߿ࡑࠗࠢࡠࡄ࡯ࡆࠕࡦࠬࠍ᷹ቯߒߡࠢ࡜ࠗ
ࠬ࠻ࡠࡦߩ⁁ᘒࠍ੐೨ߦᛠីߔࠆࠃ߁ߦߒߡ޿ࠆ‫ޕ‬ߎߩ㧸ࡃࡦ࠼㨯ࠢ࡜ࠗࠬ࠻ࡠࡦߩ⹜㛎ߦ߅޿ߡ߽ห᭽ߩ᷹ቯࠍⴕߥߞߚ‫ޕ‬࿑㧞ߦߘߩ᷹ቯ⚿ᨐࠍ␜ߔ‫ޕ‬᭎ߨᱜᏱߥ⚿ᨐ߇߃ࠄࠇߚ‫࠲࡯ࡅޕ‬㔚ജߩേ૞ὐ(2ᰴ஥ߢ⚂600㨃)߽ⓨ㑆㔚⩄೙㒢㗔ၞౝߢ޽ࠆ‫ࠗࡑޕ‬ࠢࡠࡄ࡯ࡆࠕࡦࠬߪࡔ࡯ࠞߢߩ୯ࠃࠅ㜞ߊߥߞߡ޿ࠆ߇‫ߪࠇߎޔ‬ශട㔚࿶߇1㨗㨂ߣૐ޿ὑߢ޽ࠆ‫ޕ‬ૐ࿶⹜㛎ߩ⚿ᨐࠢ࡜ࠗࠬ࠻ࡠࡦ߇ᱜᏱߢ޽ࠆ੐ࠍ⏕⹺ߒߚ‫ޕ‬㪊㪉㪅㪌㱘䌐㪉㪈㪅㪌㪈㪇㪅㪌㪇㪇㪉㪇㪇㪋㪇㪇㪍㪇㪇㪏㪇㪇䊍䊷䉺㔚ജ㩿㪮㪀࿑⋥ᵹ㨗8ශടߦࠃࠆࠛࡒ࠶࡚ࠪࡦ⹜㛎⚿ᨐ‫❑ޕ‬ゲߪࡑࠗࠢࡠࡄ࡯ࡆࠕࡦࠬ‫ޕ‬-273-㧠㧚ࠢ࡜ࠗࠬ࠻ࡠࡦ㜞࿶⹜㛎࿑ߦ㧸ࡃࡦ࠼㨯ࠢ࡜ࠗࠬ࠻ࡠࡦࠕ࠶࠮ࡦࡉ࡝ߣዉᵄ▤෸߮ᄢ㔚ജ࠙ࠜ࡯࠲࡯ࡠ࡯࠼ ᳓⽶⩄ ࠍ␜ߔ‫ޕ‬೨ㅀߩㅢࠅߎߩࠢ࡜ࠗࠬ࠻ࡠࡦ㨯ࠕ࠶࠮ࡦࡉ࡝ߪ㔚⏛⍹ࠍ㒰޿ߡ㧿ࡃࡦ࠼ࠢ࡜ࠗࠬ࠻ࡠࡦ↪ߩⵝ⟎ࠍ૶↪ߒߡ޿ࠆ‫ߦࡦࡠ࠻ࠬࠗ࡜ࠢޕ‬㔚ജࠍଏ⛎
ߔࠆࡕࠫࡘ࡟࡯࠲ߪ:6(↪ߦ⵾૞ߐࠇ‫⃻ޔ‬࿷㧯ࡃࡦ࠼㨯ࠢ࡜ࠗࠬ࠻ࡠࡦߩ࠹ࠬ࠻╬ߢ૶↪ߒߡ޿ࠆࠗࡦࡃ࡯࠲㔚Ḯࠍ↪޿ߚࡕࠫࡘ࡟࡯࠲ߢ޽ࠆ=?‫ޕ‬ᒰὼ
2(0ߣ⽶⩄㑆ߪࡒࠬࡑ࠶࠴ߢ޽ࠆߩߢߘߩኻ╷ߣߒߡ2(0ࠦࡦ࠺ࡦࠨ࡯ਗ೉࿁〝ࠍ⋥೉ߦߒߡࡑ࠶࠴ࡦࠣࠍߪ߆ߞߚ‫ޕ‬ቢోߦࡒࠬࡑ࠶࠴ߩ⸃ᶖߪߥࠄߥ߆ߞߚ߇‫⹜ޔ‬㛎ߦߪᡰ㓚ߩߥ޿࡟ࡌ࡞ߢ޽ߞߚ ࿑ ‫ޕ‬࿑㜞࿶㔚࿶ࡄ࡞ࠬᵄᒻ ਄ ෸߮㔚ᵹࡄ࡞ࠬᵄᒻ ਅ ⹜㛎ߪ‫ޔ‬േ૞ߩ⏕⹺ ๟ᵄᢙଐሽᕈ෸߮వ㗡಴ജ୯ ߥߩߢ‫ࠅ➅ޔ‬㄰ߒ*\‫ޔ‬㜞㔚࿶ߩࡄ࡞ࠬ᏷ǴU‫ޔ‬㧾㧲಴ജߩࡄ࡞ࠬ᏷ǴUߩ᧦ઙߢⴕߞߚ‫࡯ࠜ࠙ޕ‬࠲࡯ࡠ࡯࠼ߩ೨ߦᣇะᕈ⚿วེઃߩዉᵄ▤ࠍขࠅઃߌߚ‫ߦ࡯ࠩࠗ࡜࠽ࠕࠢ࡯ࡢ࠻࠶ࡀ߼੍ߪࠇߎޕ‬ࠃࠅߘߩ⚿วᐲࠍ᷹ቯߒߡ޽ࠅ=?‫ߩߘޔ‬୯ࠍࠡࠟ࠻ࡠ࠾ࠢࠬߩ㔚ജ⸘ߦ౉ജߒߡ಴ജࠍ᷹ቯߒߚ ࿑ ‫ޕ‬᷹ቯߪ㧹㧴\‫ޔ‬㧹㧴\ߩࡩᚲߩ๟ᵄᢙߦߟ޿ߡⴕߞߚ‫ޕ‬࿑ߦฦශട㔚࿶ߦኻߔࠆ಴ജࠍ␜ߔ‫ޕ‬๟ᵄᢙߦࠃࠆᏅߪᱴߤߥߊ㔚࿶㨗8ㄭㄝߢ㧹㨃એ਄ࠍ⏕⹺ߒߚ‫ߪࠬࡦࠕࡆ࡯ࡄߩᤨߩߎޕ‬ฦ᷹ቯὐߢ߽⚂ߢ‫ޔ‬ૐ࿶⹜㛎ᤨߩߘࠇߣ߶߷หߓ୯ߣߥߞߚ‫઀ޕ‬᭽ߪߥߩߢ⧯ᐓߩ⺋Ꮕ߇฽߹ࠇߡ޿ࠆ߽ߩߣᕁࠊࠇࠆ‫ߪߊߒ⹦ޕ‬56(4(ࠬ࠹࡯࡚ࠪࡦߢౣᐲ⏕⹺ߔࠆ੍ቯߢ޽ࠆ‫ޕ‬

Proceedings of the 2nd Annual Meeting of Particle Accelerator Society of Japanand the 30th Linear Accelerator Meeting in Japan (July 20 - 22, 2005, Tosu Japan)ߚ߇⋥ߋߦᒁ߈ᚯߒߡ⹜㛎ਛߩ⌀ⓨᖡൻߪή߆ߞ
ߚ‫ޕ‬ᰴߦฦ⒳ࡄ࡜ࡔ࡯࠲࡯ߦߟ޿ߡߢ޽ࠆ߇㜞࿶ߪ㨗㨂߹ߢ߆ߌߚ‫ߪࠇߎޕ‬,*2ߢߩ⹜㛎ᤨߩవ㗡಴ജ୯⏕⹺ߩ⋡቟ߩ୯ߢ޽ࠆߩߢ‫ࠇߘޔ‬એ਄ߩ㔚࿶ශട߽น⢻ߢ޽ࠆ‫ࡠࠢࠗࡑޕ‬㨯ࡄ࡯ࡆࠕࡦࠬߦߟ޿ߡߪ⚂ߣ⧯ᐓ㜞߼ߩ୯ߦߥߞߡ޿ࠆ߇‫ߎޔ‬ࠇߪኈ㊂ಽഀེߩಽഀᲧߩ⺋Ꮕߩ໧㗴ߢ޽ࠅ‫ࠢޔ‬࡜ࠗࠬ࠻ࡠࡦ⥄りߩ໧㗴ߢߪή޿ߣᕁࠊࠇࠆ‫౉ޕ‬ജߪᦨ㜞㨃߹ߢߩ౉ജߢ޽ߞߚ‫ߩᤨߩߘޕ‬಴ജߪ㧹㨃ߢ,*2ߩㆇォ᧦ઙࠍ᭎ߨౣ⃻ߒߚߣᕁࠊࠇࠆ‫ߩࡦࡠ࠻ࠬࠗ࡜ࠢߩߎޕ‬એ೨ߩേ૞๟ᵄᢙߪ
㧹㧴\ߢ޽ࠆ߇56(ߢ૶↪੍ቯߩ㧸ࡃࡦ࠼㨯ࠢ࡜ࠗࠬ࠻ࡠࡦߩേ૞๟ᵄᢙߢ޽ࠆ㧹㧴\ߢߩ⹜㛎⚿ᨐߦ߅޿ߡ߽߶߷ห᭽ߩ⚿ᨐ߇ᓧࠄࠇߚ‫ޕ‬੹࿁ߩ㧸ࡃࡦ࠼㨯ࠢ࡜ࠗࠬ࠻ࡠࡦߩౣ⹏ଔ⹜㛎ߦࠃߞߡ‫੹ޔ‬ᓟߩ56(ߩ㜞๟ᵄḮߩㆇォߦኻߒߡ᦭↪
ߥ࠺࡯࠲߇ᓧࠄࠇߚ‫ޕ‬䮏䮱䭳䭵䭳䮏䮴䮨䯃䮆ബᝄ♽
䮩䮒䮆಴ജ

᳓⽶⩄

䰘䮗 䮺䮐䰗䰘䰥䰜䰲䎘 䎜 䎑䎜 䎜 䰰 䰎䰜䰮䎘 䎜 䎑䎜 䎜 䰰 䰎ᣇะᕈ⚿วེ

࿑5 ౉಴ജ᷹ቯߩ᭎ⷐ㪍㪧㪽䇭䌯䌵䌴㩿㪤㪮㪀㪌㪈㪊㪇㪇㪤㪟㫑㪈㪉㪐㪍㪤㪟㫑㪋㪊㪉ෳ⠨ᢥ₂㪈[1] H. Hayano,“Superconducting RF Test Facility(STF) forILC”, presented in this meeting.
[2] S. Fukuda, et al., “RF Source Development ofSuperconducting RF Test Facility(STF) in KEK”,presented in this meeting.
[3] JHP Design Report, JHP-10/KEK Internal 88-8(1988)[4] M. Akemoto, et al., “Pulse Modulator for X-band Klystronat GLCTA”, Proc. of 1st Annual Meeting of Particle Acc.
Soc. of Japan, Aug.4-6, Funabashi, Japan , pp.87-pp.89,(2004).
[5] T. Takenaka, et al.,“Plan of the Power Distribution Systemfor KEK Superconducting RF Test Facility (StF)”,
presented in this meeting.

㪇㪍㪇㪎㪇㪏㪇㪐㪇㪈㪇㪇㪈㪈㪇㪈㪉㪇㪈㪊㪇ශട㔚࿶䋨䌫䌖䋩࿑㧢 㔚࿶ኻRF಴ജ․ᕈ
࿑ߦ౉ജ㔚ജࠍᄌൻߐߖߚᤨߩ಴ജ㔚ജߩᄌൻࠍ␜ߔ‫ޕ‬㧹㧴\ߩ߶߁߇㧹㧴\ࠃࠅ߽೑ᓧ߇㜞ߊ‫ޔ‬㘻๺․ᕈ߽ࠢ࡝ࠕߦ⃻ࠇߡ޿ࠆ‫ޕ‬ㆊ෰ߩ⹜㛎⚿ᨐߣߩᲧセߪ‫⾗ޔ‬ᢱ߇ᢔㅺߒߡ޿ࠆߚ߼ߦ߈ߜࠎߣ಴᧪ߡߪ޿ߥ޿߇‫ޔ‬6*#߇੹ᓟ૶↪ߢ߈ࠆ߆ߤ߁߆ߦ㑐ߔࠆ⏕⹺ߣߒߡߪචಽߥ⹜㛎ߢ޽ࠅ‫ޔ‬56(ߩ4(Ḯߣߒߡචಽ૶↪ߢ߈ࠆߎߣ߇⏕⹺ߐࠇߚ‫ޕ‬㪍㪌㪧㫆㫌㫋㩿㪤㪮㪀㪋㪊㪈㪊㪇㪇㪤㪟㫑㪈㪉㪐㪍㪤㪟㫑㪉㪈㪇㪇㪈㪇㪇㪉㪇㪇㪊㪇㪇㪋㪇㪇㪌㪇㪇㪧㫀㫅㩿㪮㪀࿑㧣 ౉ജ㔚ജኻ಴ജ㔚ജ․ᕈ

㧡㧚߹ߣ߼߹ߕ੹࿁ߩ⹜㛎ߩ╙৻ߩ⋡⊛ߢ޽ࠆ㐳ᦼ㑆᡼⟎ߒߡ޿ߚࠢ࡜ࠗࠬ࠻ࡠࡦߩ㜞࿶ශടᤨߩേ૞ߦߟ޿ߡߪ૗ࠄ໧㗴ߥߊᱜᏱߦᯏ⢻ߒߚ‫ޕ‬㜞࿶ᛩ౉ᤨߦ⧯ᐓߩࠢ࡜ࠗࠬ࠻ࡠࡦߩౝㇱ⌀ⓨߩᖡൻߪ᦭ߞ
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