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)

PRESENT STATUS OF RF TRIP AT THE KEK ELECTRON/POSITRONINJECTOR LINAC
Yoshiharu Yano1, Mitsuo Akemoto, Hiroaki Katagiri, Tetsuo Shidara,
Tateru Takenaka, Katsumi Nakao, Hiromitsu Nakajima, Hiroyuki Honma,
Toshihiro Matsumoto, Shinichiro Michizono, Mitsuhiro Yoshida, Shigeki Fukuda
High Energy Accelerator Research Organization
1-1 Oho, Tsukuba, Ibaraki 305-0801 JapanAbstract
The KEK electron positron linac began operating in 1982 as the 2.5 GeV injector for the PF. Then it started injecting
electron/positron beam to the TRISTAN ring. After the upgrading the energy from 1994 to 1997, it has been providing
e-/e+ beam to four different rings; PF(e-), PF-AR(e-), KEKB(e-), and KEKB(e+). In January 2004, KEKB has started acontinuous injection mode (CIM), in which stored currents are kept nearly constant in e- and e+ rings of KEKB. Thoughannual operating hours reach up to 7000 hours, the maintenance hours decrease after adopting the CIM operation. In thisreport, we describe the history of the rf trip rate of the klystrons including VSWR-trip and the efforts how to reduce thetotal numbers of rf trip events under the decreasing maintenance activity.

KEK㞹 Ꮔ ࣬ 㝟 㞹 Ꮔ ථ ᑏ ჹ ࡞ ࠽ ࡄ ࡾ RFࢹ ࣛ ࢴ ࣈ ࡡ ⌟ ≟㸦㸣ࡢࡋࡴ࡞ࣞࢴࢠ࡚࠵ࡾࠊ

㞹Ꮔ㝟㞹Ꮔථᑏჹࡢᖳ࡞5+ථᑏჹ࡛ࡊ࡙ᘋスࡈࡿࠉ㞹Ꮔຊ㏷ჹ࡛ࡊ࡙ࡡ㐘㌹࠿㛜ጙࡈࡿࡒࠊ
ᖳ࡞ࡢ97.89&3ࡡථᑏჹ࡛ࡊ࡙ࡵ✄഼ࢅጙࡴ5+࡞ࡢ㞹Ꮔࠉ97.89&3࡞ࡢ㞹Ꮔ࡛㝟㞹Ꮔࢅ౩⤝ࡌࡾ㐘㌹࠿ጙࡱࡖࡒࠊᖳ࡞ࡢࡐࡿࡱ࡚ࡡථᑏჹࢅኬᖕ࡞ᨭ
㏸ࡊ0*0'ࡡථᑏჹ࡛ࡊ࡙ࡵ㐘㌹࠿㛜ጙࡈࡿࡒࠊ⌟ᅹࡢࡗࡡ␏࡝ࡾࣛࣤࢡ5+ H ࠉ5+&7 H ࠉ0*0' H ࠉ
0*0' H ࡞ࣄ࣭࣑ࢅ౩⤝ࡊ࡙࠷ࡾࠊ㏳ᖏࡡ㐘㌹࡚ࡢ
5+࠿᪝ᅂࠉ5+&7 ࠿᪝ᅂࠉࡐࡡ௙࡮࡛ࢆ࡜ධ࡙
ࡡ᫤㛣ࢅ0*0'ࡡථᑏ࡞㈕ࡷࡊ࡙࠷ࡾࠊᖳ࠾ࡼጙ
ࡱࡖࡒ0*0'࡫ࡡ㏻⤾ථᑏ࡞ࡻࡽථᑏჹࡡ㐘㌹ࡢࠉࡐࡿࡱ࡚ࡡ᫤㛣ࡇ࡛ࡡථᑏ࡞ࡂࡼ࡬㟸ᖏ࡞㐛㓖࡝ࡵࡡ࡛࡝ࡽᶭ᎒ࡡᝇ࠷ᶭჹࡡ࠽ࡵࡽࢅࡌࡾ᫤㛣ࡵ࡛ࡿ࡝࠷≟Ἓ࡞࠵ࡾࠊࡐࡡ୯࡚⥲ᙟຊ㏷ჹࡡᐙ࿤࡚ࡵ࠵
ࡾ7+ࡡࢹࣛࢴࣈࢅ࠷࠾࡞΅ᑛࡈࡎᏭᏽ࡝㐘㌹ࢅ┘ᣞࡊ࡙ࡀࡒ࠾ࢅሒ࿈ࡌࡾࠊ

2.2 ;8<7࣒࣭ࢰ࣭㸧㸣Ꮽᏽ࡝㐘㌹ࡡⅥࡡ⿞ങ
2.1 ࣓ࢩ࣭ࣖࣝࢰ࣭ࡡ࢕ࣤࢰ࣭ࣞࢴࢠ
ࢠࣚ࢕ࢪࢹࣞࣤࡡ㞹″࡚࠵ࡾ࣓ࢩ࣭ࣖࣝࢰ࣭࡞ࡢᵕࠍ࡝࣓ࢼࢰ࣭࠿⿞ങࡈࡿ࡙࠽ࡽற⣵࡝␏ᖏ࡚ࡵࡐࡿ࠿㔔ኬ࡝ࢹࣚࣇࣜࢅᘤࡀ㉫ࡆࡈ࡝࠷ࡻ࠹࡞㸧㔔ࠉ㸨㔔࡞࢕ࣤࢰ࣭ࣞࢴࢠ࠿࠾ࡄࡼࡿ࡙࠷ࡾࠊ⮤ฦ⮤㌗
ࡡࡒࡴࠉࢠࣚ࢕ࢪࢹࣞࣤࡡࡒࡴࠉຊ㏷⟮➴ㇿⲬࢅᏬࡾࡒࡴ࡞ᵕࠍ࡝࢕ࣤࢰ࣭ࣞࢴࢠ࡚ࢹࣛࢴࣈ࠿Ⓠ⏍ࡌࡾࠊࡊ࠾ࡊࡐࡡ࡮࡛ࢆ࡜ࡢຊ㏷⟮➴ㇿⲬ࡚Ⓠ⏍ࡊࡒᨲ㞹࡞ࡻࡾཬᑏ࡚㏁ࡖ࡙ࡀࡒ7+࠾ࡼࢠࣚ࢕ࢪࢹࣞࣤࢅಕ㆜ࡌࡾࡒࡴ࡞഼ࡂ;8<7࣒࣭ࢰ࣭࡞ࡻࡾ࢕ࣤࢰ࣭
1;8<7࣒࣭ࢰ࣭ࡢࢠࣚ࢕ࢪࢹࣞࣤࡡฝງᑙἴ⟮࡞ス⨠ࡈࡿࡒ᪁ྡྷᛮ⤎ྙჹ㸝࣭࣊ࢷ࣭࣌ࣜ࢜ࣈ࣭ࣚ㸞࡚
᳠ฝࡊࡒ7+ฝງࣂࣜࢪ࡛ㇿⲬഁ࠾ࡼࡡཬᑏࣂࣜࢪࢅ
ῼᏽࡊࠉ㞹ᅸᏽᅹἴẒ㸝;8<7㸞ࢅ⟤ฝࡌࡾᶭჹ࡚࠵
ࡾࠊࡈࡼ࡞ス ᏽೋ௧୕ࡡ;8<7ೋࢅ᳠ฝࡌࡾ࡛࢕ࣤ
ࢰ࣭ࣞࢴࢠಘྒࢅฝງࡊ7+ࢅೳḾࡌࡾ஥࠿ฝᮮࡾࠊ
ࡆࡿ࡞ࡻࡽㇿⲬഁ࡚Ⓠ⏍ࡊࡒཬᑏἴ࡞ࡻࡽࢠࣚ࢕ࢪࢹࣞࣤ࠿᥾ഭࢅུࡄࡾ஥ࢅᮅ↓࡞㜭ࡃࡆ࡛࠿ฝᮮࡾࠊ㐘㌹࡞౐⏕ࡊ࡙࠷ࡾࢠࣚ࢕ࢪࢹࣞࣤࡢᮇ࠵ࡽࡐࡿࡑࡿࡡ࣓ࢩ࣭ࣖࣝࢰ࣭࡞ࡢ;8<7࣒࣭ࢰ࣭࠿ス⨠ࡈࡿ࢕ࣤࢰ࣭ࣞࢴࢠ࡞ࡻࡽ-;ࢅḾࡴࡾ஥࠿ฝᮮࡾࠊ୕
Ὦ࠾ࡼ&ࠤ( ࠉࠤࢬࢠࢰ࣭ࡡࡗࡡࣇࣞࢴࢠ࡞ฦࡄࡼࡿࡐࡿࡑࡿ࡞ࢦࣇࣇ࣭ࢪࢰ࣭ࢅス⨠ࡊࠉ྘ࠍࡡࢦࣇࣇ࣭ࢪࢰ࣭࠿྘ࢬࢠࢰ࣭ࡡࢠࣚ࢕ࢪࢹࣞࣤࢅࢺࣚ࢕ࣇࡌࡾᙟࢅ᤿ࡖ࡙࠷ࡾࠊ
ථᑏჹຊ㏷ࣗࢼࢴࢹࡡᇱᮇᙟࡢࢠࣚ࢕ࢪࢹࣞࣤ࠾
ࡼฝງࡈࡿࡒ7+ࢅ81*) ࡞ࡻࡽቌᖕࡊI'ࣀ࢕ࣇࣛࢴ
ࢺ࡞ࡻࡽฦ㒼ࡊࡒᚃᮇࡡຊ㏷⟮࡞౩⤝ࡌࡾ᪁ᘟ࡚࠵ࡾࠊࢠࣚ࢕ࢪࢹࣞࣤ࡫ᡘࡖ࡙ࡂࡾཬᑏἴ࡛ࡊ࡙ࡢࠉ
7+✾ࠉᑙἴ⟮ࡡ࣊ࣤࢺ㒂ࠉI'ࣀ࢕ࣇࣛࢴࢺࠉຊ㏷⟮ࠉࢱ࣐࣭࣭ࣞࢺ➴࡚ཬᑏࡊࡒ7+࠿୹࡝ࡵࡡ࡚࠵ࡾࠊ
ཬᑏࡡཋᅄࡢ2-̲ࡡᇱᮇἴ࡞࠽ࡄࡾㄢᩒ୘㊂࡞ࡻࡾ୘ᩒྙࠉຊ㏷⟮࡚ࡡභᣲჹ࡛ࡊ࡙ࡡ㐛ῳ⌟㇗ࠉ㧏ㄢἴ࡞ᑊࡌࡾ୘ᩒྙ࠿⩻࠻ࡼࡿࡾࠊ0*0'࡞ྡྷࡄ࡙ቌᙁࡈࡿࡒ㒂ฦ㸝&'ࢬࢠࢰ࣭㸞࡞㛭ࡊ࡙ࡢ❟మᅂ㊪࡞ཬᑏἴᑊ➿࠿࡝ࡈࡿ࡙࠷ࡾ[1] ࠊࡗࡱࡽࠉຊ㏷⟮
࠾ࡼࡡཬᑏἴ࡞ࡗ࠷࡙ࡢ❟మᅂ㊪ࡡᵋᠺ࡞ࡻࡽI'
ࣀ࢕ࣇࣛࢴࢺ࡞࠽࠷࡙୕Ὦഁຊ㏷⟮࡛ୖὮഁຊ㏷⟮

E-mail: yoshiharu.yano@kek.jp-230-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)࠾ࡼࡡཬᑏἴ࠿rࡡన┞ᕣࢅᣚࡗࡻ࠹࡞ᑙἴ⟮㛏࠿Ửࡴࡼࡿ࡙࠷ࡾࠊࡆࡡࡒࡴ&'ࢬࢠࢰ࣭ࡡຊ㏷⟮࠾ࡼࡡཬᑏἴᙟ࡞ࡢࣃࢣ≟ࡡཬᑏࡢ࡮࡛ࢆ࡜↋࠷࠿ࠉ(ࢬࢠࢰ࣭௧㜾࡞ࡗ࠷࡙ࡢᨭ㏸๑ࡡ❟మᅂ㊪ࢅ౐⏕ࡊ࡙࠷ࡾࡒࡴᅒࡡౚࡡࡻ࠹࡞ຊ㏷⟮࠾ࡼࡡཬ
ᑏἴᙟ࡞7+ࡡ❟ࡔ୕࠿ࡽࠉన┞ཬ㌹ࠉ❟ࡔୖ࠿ࡽ࡞࠽࠷࡙ࣃࢣ≟ࡡཬᑏ࠿ぜࡼࡿࠉ;8<7࣒࣭ࢰ࣭ࡡ࣭࣊ࢪೋࡢ௧୕ࠉ㧏࠷ࡵࡡ࡞ࡗ࠷࡙ࡢᖏ᫤௧୕
ࢅ♟ࡊ࡙࠷ࡾࡵࡡࡵᩐኣࡂ࠵ࡾࠊࢠࣚ࢕ࢪࢹࣞࣤࡡࢪ࣋ࢴࢠ࠾ࡼ;8<7ࡡೋࡢ௧ୖ࠿さ ịࡈࡿ࡙࠷ࡾ
ࡒࡴࡆࡿࡼࡡࡵࡡࡢ㟸ᖏ࡞ࢹࣛࢴࣈࡊࡷࡌ࠷≟Ἓ࡞࠵ࡾࠊ஥࡚࣓ࢩ࣭ࣖࣝࢰ࣭チ᩷ࡡཤ⩻࡞ࡊࡒࠊࢦ࢕ࣚࢹࣞࣤࡡᑋ࿤࠿㎾ࡘࡂ࡛ࢪ࢕ࢴࢲࣤࢡࡡࢰ࢕࣑ࢩࢴࢰࡡቌຊࡷࢿ࢕ࢫ࠿ኣࡂ࡝ࡽ;8<7࣒࣭ࢰ࣭ࡡ࣭࣊ࢪೋ࡞ᙫ㡢ࢅཀྵ࡯ࡌലྡྷ࠿࠵ࡾࡒࡴᣞ㔢࡛ࡊ࡙࠷ࡾࠊ81*)ࡡ᚜ㄢᩒ࡚࣭࣊ࢪೋࡡ఩΅ࢅᅒࡖࡒࠊ7+ࡡ❟ࡔୖ࠿ࡽ㒂ฦ࡚Ⓠ⏍ࡌࡾࣃࢣ≟ࡡཬᑏἴᙟࢅ఩΅ࡌࡾࡒࡴࢰ࢕࣐ࣤࢡㄢᩒ࡞ࡻࡽ-;ࡡ❟ࡔୖ࠿ࡽ㒂ฦ࡞7+ࡡ❟ࡔୖ࠿ࡽ㒂ฦࢅ㔔ࡠࡒࠊࡐࡡ௙ᵕࠍ࡝࣓ࢩ࣭ࣖࣝࢰ࣭ࡡᨭⰃࢅᐁ᪃ࡊࢦ࢕ࣚࢹࣞࣤࡡུࡄථࡿ᳠ᰕࡵᙁ໩ࡊ⣙ဗࡈࡿࡒධ࡙ࡡࢦ࢕ࣚࢹࣞࣤ࡞ᑊࡊ᫤㛣ࡡࣚࣤࢼࣤࢡモ㥺ࢅᐁ᪃ࡊ࡙࠷ࡾࠊ
3.2 ࢤࣤࢸ࢔ࢨࣘࢼࣤࢡ࡛*Vスᏽ
ኚࡡ㛏᭿࣒ࣤࢷࢻࣤࢪᚃ࡞࡮࡯㸧㐄㛣࠾ࡄ࡙ࢤࣤࢸ࢔ࢨࣘࢼࣤࢡࢅ⾔࠷ࠉࡐࡡᚃ࡮࡯㸦ᖳ㛣ࡡ㐘㌹࡞ථࡾࠊ❟ࡔ୕ࡅ᫤࡞ࡢ*V"N;ࢅ┘ᵾೋ࡛ࡊࢤ ࣤࢸ࢔ࢨࣘࢼࣤࢡࢅ㐅ࡴࠉ┘ᵾೋ࡞㐡ࡊࡒࡵࡡ࠾ࡼ㐘㌹ೋ*V"N;࡞スᏽࡊ࡙࠷ࡂࠊࡒࡓࡊᵕࠍ࡝โ⣑࠾ࡼධ࡙ࡡࢠࣚ࢕ࢪࢹࣞࣤ࠿*V"N;࡚㐘㌹࡚ࡀࡾゼ࡚ࡢ࡝ࡂ≟Ἓ࡞ᚺࡋ࡙㐘 ㌹ೋࡢỬࡴࡼࡿࡾࠊ㏳ᖏ㸨ᮇ⛤ᗐࡡࢠࣚ࢕ࢪࢹࣞࣤ࠿ࢪࢰࣤࣁ࢕ࡡ≟ឺ࡚㐘㌹ࡢ㛜ጙࡈࡿࡾࠊ
3.3 Ꮽᏽ࡝㐘㌹ࡡࡒࡴ࡞ᅒ㸝01㸞
ࡆࡆ࡚HKࡢࢠࣚ࢕ࢪࢹࣞࣤฝງࡡཬᑏἴ 5G ࢅአ㒂ࡡ᳠ἴჹ࡚ふῼࡊࡒࡵࡡࠉHKࡢ5Gࢅ;8<7࣒࣭ࢰ࣭හ㒂ࡡ᳠ἴჹ࡚ふῼࡊࡒࡵࡡࠉHKࡢࢠࣚ࢕ࢪ
ࢹࣞࣤฝງࡡ㐅⾔ἴ 5I ࢅ;8<7࣒࣭ࢰ࣭හ㒂ࡡ᳠ἴჹ࡚ふῼࡊࡒࡵࡡ࡚࠵ࡾࠊ㸨㸣ዯర࡞RFࢹࣛࢴࣈࢅ΅ࡼࡌ࠾
3.1 ࡆࡿࡱ࡚ࡡᑊ➿
⌟⏕ᆵࡡ;8<7࣒࣭ࢰ࣭ࡡᑙථࡢᖳ࠾ࡼ࡚࠵ࡾ࠿ࢦ࢕ࣚࢹࣞࣤ࠿Ⓠ⏍ࡌࡾࢿ࢕ࢫ➴࡞ᝆࡱࡈࡿᵕࠍ
࡝ᨭⰃ࠿࡝ࡈࡿ࡙ࡀࡒࠊࢰ࢕࣐ࣤࢡ⣌ࡡࢹࣚࣇࣜࠉ
ࣅ࣭ࢠ࣭࣌ࣜࢺᅂ㊪ࢅ᤿⏕ࡊࡒⅥࡡၡ㢗Ⅴࠉ࢛࣋࢓ࣤࣈࡡ࢛ࣆࢬࢴࢹ࡞ࡻࡾ࣭࣊ࢪೋࡡቌຊ➴ࡐࡿࡑࡿ࡞ᑊ➿ࢅㅦࡋ࡙ࡀ࡙࠷ࡒࠊ༟⣟࡞7+ࢹࣛࢴࣈࡡᅂᩐࢅ΅ࡼࡌ࡞ࡢ*Vࡡスᏽೋ
ࢅୖࡅ࡙7+ࡡࣂ࣭࣠ࢅ΅ࡼࡎࡣⰃ࠷࠿ࢪࢰࣤࣁ࢕ࡡ
ࢠࣚ࢕ࢪࢹࣞࣤ࠿↋࠷≟ឺ࡚ࡡ㛏᭿㐘 ㌹ࡢ⩻࠻ࡼࡿ࡝࠷ࡒࡴ㝷㝀࡝ࡂ*Vࢅୖࡅࡾゼ࡞ࡢ⾔࠾࡝࠷ࠊฝᮮࡾࡓࡄ㐘㌹ೋࡡ*Vࢅಕࡖࡒࡱࡱ㐘 ㌹ࢅ⤾ࡄࡾࡒࡴᖳ༖ࡣ࠾ࡼ࢛࣭࣋ࣝࢰ࣭࡞ḗࡡ஥ࢅທ⾔ࡊ࡙ࡵࡼࡖ࡙࠷ࡾࠊ7+ࢹࣛࢴࣈ࠿㸪ᅂ௧୕㏻⤾ࡊࡒሔྙࡢ*Vࢅ㸦N;ୖࡅ࡙ᵕᏄࢅぜࡾࠊࡐࡿ࡚ࡵ཭ࡱࡼ࡝࠷ሔྙࡢࡈࡼ࡞ୖࡅ࡙ࡹࡂ࠿≟Ἓ࡞ᚺࡋ࡙ࢪࢰࣤࣁ࢕ࢅวࡽ᭨࠻ၡ㢗࠿㉫ࡀ࡙࠷ࡾຊ㏷⟮ࢅఆࡱࡎࡾࠊ㸝௧๑ࡢࡆࡆ࡚↋⌦ࢅࡊ࡙ຊ㏷⟮ࢅഭࡴᚗᖉࡈࡎࡾࡡ࡞㸨ࠤ㸩ࣧ᭮࠾࠾ࡖࡒࡆ࡛ࡵ࠵ࡖࡒࠊ㸞ຊ㏷⟮ࡡ┷✭➴ࢅ┐っࡊၡ㢗࠿↋ࡄࡿࡣඔࡡ*Vࡱ࡚ᡘࡊ㐘㌹ࢅ⤾ࡄࡾࠊࡊࡣࡼࡂఆࡱࡎࡒຊ㏷⟮ࡢࢤࣤࢸ࢔ࢨࣘࢼࣤࢡࡡᚃ*Vࢅ㐘㌹ೋ࡞ᡘࡊᚗᖉࡈࡎࡾࠊ

㸩㸣RFࢹࣛࢴࣈࡡ᥆⛛ᵕࠍ࡝ᨭⰃ࡛ㄢᩒཀྵࡦ࢛࣭࣋ࣝࢰ࣭ࡡຑງ࡞ࡻࡽᑊ➿๑ࡢᖳ㛣ᅂࡵ࠵ࡖࡒ7+ࢹࣛࢴࣈࡡᩐ࠿ᖳ
㛣ᅂ⛤ᗐ࡞఩΅ࡈࡿࡒࠊ
3.2 ࡈࡼ࡝ࡾᨭ㏸࡛ㄢᩒ
7+ࢹࣛࢴࣈᩐ 7+ࢹࣛࢴࣈᩐ
࢕ࣤࢰ࣭ࣞࢴࢠ⣌࡞ṟࡈࡿࡒၡ㢗Ⅴ࡛ࡊ࡙;8<7ࡡᖳᗐ 7+ࢹࣛࢴࣈᩐ
㸤㐄㸤᫤㛣࢕ࣤࢰ࣭ࣞࢴࢠ࠿ິషࡊ࡙ࡵ⣌ධమࡡ㐔ࡿ࠾ࡼ-;࠿
ࠤࠤ
ೳḾࡌࡾࡱ࡚ࡡ㛣㸧ࠤ㸨ࣂࣜࢪࡡ7+࠿ฝງࡈࡿ࡙ࡊ
ࡱ࠹⌟㇗࠿࠵ࡖࡒࠊࡆࡡⅤࢅᅂ㑂ࡌࡾࡒࡴ-;ࡡࢹࣛ

ࠤࠤ
࣭࢝ࢅ;8<7࣒࣭ࢰ࣭⤊⏜࡛ࡊ࢕ࣤࢰ࣭ࣞࢴࢠⓆ⏍࡛
ࠤࠤྜྷ᫤࡞ࢹ࣭ࣛ࢝ࢅೳḾࡊᮇమࡡ࢕ࣤࢰ࣭ࣞࢴࢠ࠿ິ
ࠤ
ࠤషࡌࡾࡱ࡚ࡡ㛣ࢹ࣭ࣛ࢝࠿㏳㐛ࡊ࡝࠷ࡻ࠹ᨭ㏸ࡊࡒࠊ

ࠤࠤ௧๑࢛࣋࢓ࣤࣈࡡ࢛ࣆࢬࢴࢹ࠾ࡼࡂࡾ࣭࣊ࢪೋࡡⓆࠤࠤ⏍ࢅ㑂ࡄࡾࡒࡴ࣏࢕ࢻࢪ࢛ࣆࢬࢴࢹࢅ࠾ࡄ࡙࠷ࡒࡵ⾪㸦ࡡࢅࢭ࢛ࣞࣆࢬࢴࢹ࡛ࡊ࣭࣊ࢪೋࡡንິࢅふᐳࡌࡾ⾪࡞0*0'࡫ࡡࣄ࣭࣑౩⤝࠿ᮇ᰹Ⓩ࡞ጙࡱࡖࡒ
-231-

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)ᖳ࠾ࡼࡡᖳᗐࡇ࡛ࡡ7+ࢹࣛࢴࣈࡡᅂᩐࢅ♟ࡌࠊࡆࡆ࡚᭮ࠉ᭮ࡡࢹࣛࢴࣈᩐࡢࢤࣤࢸ࢔ࢨࣘࢼࣤࢡ᫤ࡡࡵࡡ࡛ࡊ࡙࢜ࢗࣤࢹࡊ࡙࠷࡝࠷ࠊ࡞ࡗ࠷࡙ࡢ௑ᖳࡡ࣒ࣤࢷࢻࣤࢪ࡚ஹᥦ஢ᏽ࡚࠵ࡾࠊ
ࢬࢠࢰ࣭ࡡࢠࣚ࢕ࢪࢹࣞࣤࡢධమⓏ࡞;8<7࣒࣭ࢰ࣭ࡡ࣭࣊ࢪೋ࠿㧏ࡂࢹࣛࢴࣈᩐࡵኣ࠷ࡒࡴࢰ࢕࣐ࣤࢡㄢᩒ࡞ࡻࡽࣃࢣ≟ࡡཬᑏἴᙟࢅ఩΅ࡈࡎࡒ࠷࠿ࠉࡆࡿ࠾ࡼࢂ࠾ࡾࡻ࠹࡞ᖳᙔ᫤ࡢ*Vࡡスᏽೋࢅ㧏ࡴ࡞ࡊ࡙࠷ࡒࡒࡴ⌟ᅹ࡛Ẓ㍉ࡌࡾ࡛㟸ᖏ࡞7+ࢹ ࢬࢠࢰ࣭᭩ୖὮࡡ01ࡢ㝟㞹Ꮔࢰ࣭ࢣࢴࢹୖὮ࡚࠵ࡾࢬࢠࢰ࣭୕Ὦࡡຊ㏷⟮࡞ࣂ࣭࣠ࢅࣆ࢔࣭ࢺࡊࣛࢴࣈ࠿ኣ࠷ࡆ࡛࠿ࢂ࠾ࡾࠊᅒ࡞ࣧ᭮㛣ࡡ7+ࢹࣛࢴࣈࡡⓆ⏍≟Ἓࢅᖳᗐࡇ࡛ ࡙࠽ࡽ81*)ࢅ౐⏕ࡊ࡙࠷࡝࠷ࡒࡴࢬࢠࢰ࣭ࡡࢦࣇ
࡞ࡱ࡛ࡴ࡙࠵ࡾࠊࡆࡆ࡚㉝ࡢࢹ࣭ࢰࣜࡡࢹࣛࢴࣈᩐࠉ ࣇ࣭ࢪࢰ࣭ 8' ࡡࣂࣜࢪἴᙟࢅㄢᩒࡌࡾ஥࠿ฝᮮ
㟯ࡢ;8<7࣒࣭ࢰ࣭࡞ࡻࡾࢹࣛࢴࣈᩐ࡚࠵ࡾࠊᢙࡿ⥲ ࡝࠷ࠊ01࠿ 8'࠾ࡼ≺❟ࡌࡿࡣྊ⬗࡛࡝ࡾࠊࡐ
ࡢࡐࡡ᭮ࡡຊ㏷ࢣ࢕ࣤ㸝ᮅᰧḿ㸞࡚࠵ࡾࠊࡡ௙ࠉ᩺ࡊ࠷モࡲ࡛ࡊ࡙ࢠࣚ࢕ࢪࢹࣞࣤࡡථງ├๑
ࡆࡿ࠾ࡼよࡾࡻ࠹࡞ᑊ➿๑ࡡᖳᗐ࡚ࡢ㐘㌹ ᫤
ࡡ*VࢅẒ㍉Ⓩ㧏ࡂスᏽࡊ࡙࠷ࡒࡒࡴࢹࣛࢴࣈᩐࡵ㟸 ࡞RFࣅࣤࢪ࢕ࢴࢲࢅᑙථࡊຊ㏷⟮࠾ࡼࡡཬᑏἴࢅࢹᖏ࡞ኣࡂຊ㏷⟮ࠉ✾ࠉࢠࣚ࢕ࢪࢹࣞࣤࢅഭࡴ࡙࠷ࡒ ࣭࡛ࣛ࢝ࡊ࡙7+ࢅೳḾࡌࡾ᪁Ἢ࠿⩻࠻ࡼࡿࡾ[2] [3] ࠊ஥࠿よࡾࠊᖳᗐࡡኚ௧㜾ࡢ;8<7࣒࣭ࢰ࣭ࡡᨭ㏸ ࡆࡆ࡚7+ࢅೳḾࡌࡾ஥࠿ฝᮮࡿࡣ᭩ᑚ㝀ࡡ㐔ࡿ࡚ࣂ
࡛*Vࡡスᏽೋࢅኣᑛ఩ࡴ࡞ࡊࡒ஥࠿ຉࢅ዇ࡊ㐘㌹᫤ ࣜࢪࡡ㏭୯࡚7+ࢅḾࡴࡾ஥࠿ྊ⬗࡞࡝ࡾࠊࡗࡱࡽࠉࡡࢹࣛࢴࣈ࠿΅ᑛࡊ࡙࠷ࡾࠊᖳᗐ௧㜾ࡵኚ᭿࣒ ຊ㏷⟮࡚ᨲ㞹࠿㉫ࡀࡒሔྙ㏷ࡷ࠾࡞7+ࢅḾࡴࠉ࢙ࢾࣤࢷࢻࣤࢪᚃࡡ❟ࡔ୕ࡅ᫤ࠉ㐘㌹᫤࡛ࡵ࡞΅ᑛࡊ࡙࠷ࡾࠊᖳᗐࡡኚ᭿࣒ࣤࢷࢻࣤࢪᚃࡡ❟ࡔ୕ࡅ᫤ ࣭ࣜ࢟ࡡ౩⤝ࢅ⤧ࡗ஥࡚ᨲ㞹㒂నࡡ᥾ഭࢅ᭩ᑚ㝀࡞࡞ࡢཋᅄ୘᪺࡚ࢬࢠࢰ࣭ࡡ༖ᩐ௧୕ࡡ;8<7 ࣒࣭ 㣏࠷Ḿࡴࡼࡿࡾ஥࠿᭿ᙽࡈࡿࡾࠊࡆࡡ᪁Ἢࡢࠉ81*)ࢰ࣭ࡡ࣭࣊ࢪೋ࠿௛㎾࠾ࡼୖ࠿ࡼࡍ㏳ᖏ㐘㌹࡞ ࢅ౐⏕ࡊ࡙࠷ࡾຊ㏷ࣗࢼࢴࢹ࡞ᑊࡊ࡙ࡡຝᯕࡢ᭿ᙽ
ථࡾࡡ࠿ᅏ㞬࡞࡝ࡖࡒࠊࢰ࢕࣐ࣤࢡㄢᩒ࡞ࡻࡽ-;ࡡ ࡚ࡀ࡝࠷࠿ࠉ81*)ࢅ౐⏕ࡊ࡙࠷࡝࠷&ࠉࠉ
❟ࡔୖ࠿ࡽ㒂ฦ࡛7+ࡡ❟ࡔୖ࠿ࡽ㒂ฦࢅ㔔ࡠࡾࡆ࡛ ࡡຊ㏷ࣗࢼࢴࢹ࡞ᑊࡊ࡙ࡢ᭯ຝ࡚࠵ࢀ࠹ࠊ
࡚ࣃࢣ≟ࡡཬᑏἴᙟࢅ఩΅ࡊ㏳ᖏࡡ㐘 ㌹࡞ථࡾ஥࠿
ฝᮮࡒࠊኬᖕ࡞ຊ㏷ࢣ࢕ࣤ࠿ୖ࠿ࡖ࡙࠷ࡾ࡛ࡆࢀࡢ
ຊ㏷⟮➴ࡡࢹࣚࣇ࡚ࣜ7+ࣂ࣭࣠ࢅୖࡅ࡙࠷ࡒ᫤᭿࡚
ཤ⩻ᩝ⊡࠵ࡾࠊ㸪㸣௑ᚃࡡㄚ㢗ᖳᗐࡡᚃ༖࡞㐄㛣ࡡ7+ࢹࣛࢴࣈᩐ࠿ࢅว
ࡽࡐ࠹࡝᫤᭿ࡵ࠵ࡖࡒ࠿⌟ᅹࡢ๑ᚃࢅ᥆⛛ࡊ࡙࠷ࡾࠊ㐄㛣ࡡࢹࣛࢴࣈᩐࢅวࡾࡒࡴ࡞ࡢᖏ࡞ࢹ
ࣛࢴࣈᩐ࠿ኣ࠷ࢠࣚ࢕ࢪࢹࣞࣤࡡ*Vスᏽೋࢅୖࡅࡾ
஥࠿᭩ࡵ⠾༟࡝᪁Ἢ࡛ࡊ࡙୕ࡅࡼࡿࡾ࠿ࠉධమࡡຊ
㏷ࢣ࢕ࣤࡡ఩ୖࢅᣅࡂࡒࡴᏭ᪾࡞ࡢᐁ᪃࡚ࡀ࡝࠷ࠊ
୘Ꮽᏽ࡝஥࠿よࡖ࡙࠷ࡾࢦࣇࣇ࣭ࢪࢰ࣭( 8'([1] I. Sato, et al., “ᨲ ᑏ ක ථ ᑏ ჹ ቌ ᙁ ゝ ⏤ 0*0'࡞ ྡྷ ࡄ࡙ ” KEK Report 95-18 March 1996.
[2] M. Ikeda, et al., “ࣛ ࢓ ࣜ ࢰ ࢕ ࣑ RFࣂ ࣜ ࢪ ▯ ⦨ ⏕ ࢹ ࣛ࢝ ࣭ ࢨ ࢪ ࢷ ࣑ ”➠ 29ᅂ ࣛ ࢼ ࢓ ࢴ ࢠ ᢇ ⾙ ◂ ✪ ఌ ࣈࣞ ࢨ ࣭ ࢸ ࢔ ࣤ ࢡ ࢪ , Aug.4~6,2004[3] Y. Yano, et al., “ࣛ ࢓ ࣜ ࢰ ࢕ ࣑ RFࣂ ࣜ ࢪ ᅸ ⦨ ࢨ ࢪ ࢷ࣑ ”➠ 29ᅂ ࣛ ࢼ ࢓ ࢴ ࢠ ᢇ ⾙ ◂ ✪ ఌ ࣈ ࣞ ࢨ ࣭ ࢸ ࢔ࣤ ࢡ ࢪ , Aug.4~6,2004-232-