Proceedings of the 5th Annual Meeting of Particle Accelerator Society of Japanand the 33rd Linear Accelerator Meeting in Japan (August 6-8, 2008, Higashihiroshima, Japan)

BEAM DIAGNOSTICS IN J-PARC MR COMMISSIONING,A)

A)

A)

B)

C)

Takeshi Toyama1 , Dai Arakawa , Mitsuhiro Arinaga , Kotoku Hanamura , Hiroyuki Harada ,A)
B)
D)A)
Yoshinori Hashimoto , Shuichiro Hatakeyama , Naoki Hayashi , Shigenori Hiramatsu ,A)A)
A)A)
Susumu Igarashi , Seishu Lee , Hiroshi Matsumoto , Junichi Odagiri ,A)A)
A)
D)
Kenichiro Sato , Masaki Tejima , Makoto Tobiyama , Kazami YamamotoA)
High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki, 305-0801, JapanB)

Mitsubishi Electric System & Service Co., Ltd, 2-8-8 Umezono, Tsukuba, Ibaraki, 305-0045, JapanC)
Hiroshima University, Higashi-Hiroshima, Hiroshima, 739-8526
D)Japan Atomic Energy Agency (JAEA), 2-4 Shirakatashirane, Tokai, Naka, Ibaraki 319-1195, Japan

Abstract
J-PARC MR was successfully commissioned with single bunch accumuration at 3 GeV and the beam intensity of ~4x1011 protons per bunch, 1% of the design value. Beam diagnostic devices: current monitor's (DCCT, FCT, WCM),
BPM's, BLM's, profile monitors (MWPM, Flying wire, IPM) and tune meter have come into operation at the abovecondition. Using outputs from these divices, beam related physical quantities were obtained with enough precision.

J-PARC MRࢤ ࣐ ࢴ ࢨ ࣘ ࢼ ࣤ ࢡ ࡞ ࠽ ࡄ ࡾ ࣄ ࣭ ࣑ チ ᩷㸦㸣ࡢࡋࡴ࡞ ⾪２ )F^RQH࡞࠽ࡄࡾ୹࡝ࣄ࣭࣑࣬ࣂ࣒࣭ࣚࢰ
陽子ᩐSURWRQVࣅ࣭ࢠ電流
&
ᖲᆍ電流P&㏷ᗐșࣁࣤࢲ㛏
QV࿔ᅂ࿔ἴᩐN-̲࿔ᅂ࿔᭿ȣV7+࿔ἴᩐ2-̲ኬᙁᗐ陽子ຊ㏷ჹ᪃スJ-PARC࡞࠽࠷࡙௑ᖳ᭮
࡞⾔࡝ࢂࡿࡒࣄ࣭࣑ᛮ⬗モ験（IF^RQH） @B ࡞࠽ࡄࡾࠉMR（Main Ring）࠽ࡻࡦ3-50BT（RCSMR間のࣄ࣭࣑㍲㏞㊪）ࡡࣄ࣭࣑࣓ࢼࢰິష≟Ἓ࡞ࡗ࠷࡙ሒ࿈ࡌࡾࠊ௑ᅂ౐⏕ࡊࡒ࣓ࢼࢰ࣭ࢅ⾪1࡞ࡱ࡛ࡴࡾࠊ)F^RQH
௧後ࠉ࠷ࡂࡗ࠾ࡡ࣓ࢼࢰ࣭ࢅቌࡷࡌ஢ᏽ࠿࠵ࡾࠊ௑
ᅂࡢࠉࣁࣤࢲᙔࡽࣄ࣭࣑ᙁᗐSURWRQV（スゝೋSURWRQVGXQHKࡡ⣑）ࠉ VLQJOHGXQHKࠉ࢙ࢾ࣭ࣜ࢟,H;ୌᏽ࡚ࡡ㐘㌹࡚࠵ࡖࡒࠊ୹࡝27ࣄ࣭ 㸧㸣'9 'HFP9UFQVSRUWOLQH ࡡࣄ࣭࣑࣬ࣂ࣒࣭ࣚࢰࢅ⾪２࡞ࡱ࡛ࡴࡾࠊ࣑チ᩷

FCTࡢࠉࢹࣞ࢕ࢱࣜࢤ࢓࡛ࡊ࡙ࢻࢿ⤎ᬏ㌶☚ᛮᮞ⾪１ )F^RQH࡚౐⏕ࡊࡒ࣓ࢼࢰ࣭
ᩩ（ࣆ࢒࢕࣒ࣤࢴࢹ®）ࢅ౐⏕ࡊࠉ２ḗࢤ࢕ࣜ25⿞⨠ྞྋᩐ 
ࢰ࣭ࣤ࡞25Ȑ（50Ȑ2୩า）ㇿⲬࢅཱིࡽ௛ࡄ࡙࠷ࡾࠊ'9
ಘྒࡢ20Dྜྷ㍂ࢢ࣭ࣇ࡚࣭ࣜࣞ࢜ࣜโᚒᐄࡱ࡚ఎ㏞+(9 ࡈࡿࠉ᫤ᏽᩐ160ȣs࡚✒ฦᚃࢦࣤࣈ࣭ࣜ࣌ࣜࢺࡈࡿ
2<52 ࡾ（ 1014 protons / 10V） ࠊ ࡆ ࡿ ࡼ ࡢ ADC（ 10V /'5220000）ࢅᦒ㍍ࡊࡒPLC࣓ࢩ࣭ࣖࣜ࡞ࡻࡽࢸࢩࢰࣜ໩

'12ࡈࡿࡾࠊ 5ྋ୯ࡡୖὮ2ྋࡢPPS（Personel ProtectionSystem）⏕ @B ࠉࡱࡒ１ྋࡢථᑏ࢞ࢴ࣭࡛࢜ࣄ࣭࣑࡛
27ࡡྜྷ᭿┐っ⏕࡛ࡊ࡙౐⏕ࡊ࡙࠷ࡾࠊ)((9 MWPM@Bࡢࠉ㔘ࢤ࣭ࢹࡈࡿࡒࢰࣤࢡࢪࢷࣤ࣬࣠࢕
+(9 ࣭ࣕȭ30ȣmࢅࠉスゝࣄ࣭࣑ࢦ࢕ࢫ࡞ᚺࡋ࡙2.5 mm,
<(2
3.5 mm, ࡱࡒࡢ4 mmࡡ間隔࡚32ᮇᘿࡖ࡙࠷ࡾࠊಘྒ

'52
ఎ㏞࡞ࡢ1.5D34ⰲྜྷ㍂ࢢ࣭ࣇࣜࢅ㖙ࢷ࣭ࣈ࠽ࡻࡦ㕪'12࡚ୌᣋࢨ࣭ࣜࢺࡊࡒࡵࡡࢅ౐⏕ࡊࠉ⪇ࢿ࢕ࢫᛮࢅ高2<52
 ࡴࡒࠊಘྒฌ⌦ࡢࠉ࣭ࣞ࢜ࣜโᚒᐄ࡞࡙ࢣ࣭ࢹࢅ࠾

+<52
ࡄ࡙✒ฦᚃࢸࢩࢰࣜ໩ࡈࡿࡾࠊ
.52
 BPMࡢᖲ⾔4ฦ๪電極ᆵ࡚ࠉࣄ࣭࣑ࢦ࢕ࢫ࡞ྙࢂ

9XQHPHWHU（-;）
ࡎ࡙හᙼȭ230mm, 200 mmࡡ2種類ࡡࢦ࢕ࢫ࠿࠵ࡾࠊ
ࢲ࢘ࣤࣁ࣭አഁࡡࢹࣚࣤࢪ（ᕬᩐẒ15:2）࡞ࡻࡽ఩
ᇡ㐵᩷࿔ἴᩐࢅ230kHzࡱ࡚ᣉࡅ࡙ࣁࣤࢲἴᙟࢅᚽᐁ
1E-mail: takeshi.toyama@kek.jp-298-

Proceedings of the 5th Annual Meeting of Particle Accelerator Society of Japanand the 33rd Linear Accelerator Meeting in Japan (August 6-8, 2008, Higashihiroshima, Japan)

࡞ふῼ࡚ࡀࡾࡻ࠹࡞ࡊࡒࠊಘྒఎ㏞࡞ࡢ8D4ⰲྜྷ㍂ Ȑ36୩าࠉ࠽ࡻࡦᰧḿࢤ࢕ࣜ（1ࢰ࣭ࣤ）࡞ㇿⲬᢤࢢ࣭ࣇࣜࢅ㖙ࢷ࣭ࣈ࡞ࡻࡽୌᣋࢨ࣭ࣜࢺࡊࡒࡵࡡࢅ ᢘ50Ȑࢅཱིࡽ௛ࡄ࡙΅⾮ࡈࡎࡒࠊ᭩⤂Ⓩ࡝高域㐵᩷౐⏕ࡊࠉ࣭ࣞ࢜ࣜโᚒᐄ࡞࡙ࢸࢩࢰ࢛ࣜࢨࣞࢪࢤ࣭ ࿔ἴᩐࡢ⣑180 MHz（-3dB）ࠉࢦࢡࡢ⣑10 ms࡚࠵ࡾࠊࣈ（ DSO6014L: ᆱ ├ ㍂ ฦ よ ⬗ 8bit, ࿔ ἴ ᩐ ᖈ ᇡ ᖕ
WCM（RFࣄ࣭࣑࣭ࣞࢸ࢔ࣤࢡᑊ➿⏕2ྋࠉふῼ
100MHz, ࢦࣤࣈࣛࣤࢡ㏷ᗐ2GSPS ）࡞ࡻࡽ電ᅸἴ⏕1ྋ）ࡢࠉࣄ࣭࣑ࢱࢠࢹ（SUS316L）ࡡࢬ࣐ࣚࢴ
ᙟࢅࢦࣤࣈࣛࣤࢡࡊ࡙࠷ࡾࠊ
ࢠ࣬ࣇ࣭ࣝࢠࢅ㊦ࡃᢤᢘ92mȐࢅὮࡿࡾባ電流ࡡష
BLM@B ࡢྜྷ㍂ᵋ㏸ࡡẒౚゝᩐ⟮ᆵ࡚ࠉ50ྋス⨠ࡊࡾ電圧ࢅ25Ȑ（50Ȑ2୩า）࡚ふῼࡌࡾࠊባ電流࠿ࡒࠊȭ50ȣmࡡPt࣠࢕࣭ࣕࢅහᙼȭ23mmࡡࢪࢷࣤࣝ
ࢪ࣬ࢲ࣭ࣖࣇࡡ୯ᚨ࡞ᘿࡽࠉAr࢝ࢪ࡛ࠉකᏄ࡞ࡻࡾ ࢿ࢕ࢫᑊ➿⏕ࢨ࣭ࣜࢺ࣍ࢴࢠࢪࢅὮࡿࡾࡡࢅ防止ࡌࡾࡒࡴࡡ࢕ࣤࢱࢠࢰࣤࢪࡢࣆ࢒࢕࣒ࣤࢴࢹ®ࢅ౐⏕
ㄏಘྒ防止ࡡࡒࡴࡡquench gas࡛ࡊ࡙⣑1%ࡡCO2 ࢅຊ࠻ᑌ༰ࡊ࡙࠵ࡾࠊ㛏ࡈࡢ800mm࡚࠵ࡾࠊಘྒఎ㏞ ࡊ࡙࠷ࡾࠊࢦࢡࡢࠉࢤ࢓࣬࢕ࣤࢱࢠࢰࣤࢪࡡࣁࣚࢵ࢞ࢅཬ᫆ࡊ࡙ 0.36 m - 1.05 ms࡚࠵ࡾࠊ高࿔ἴഁ࡚ࡢ
ࡢ 8DFBྜྷ ㍂ ࢢ࣭ ࣇࣜ ࡚高電圧༰ ຊࡢ RG59/U ྜྷ ㍂ࢢ࣭ࣇ࡚ࣜ⾔࡝ࡖ࡙࠷ࡾࠊ࣭ࣞ࢜ࣜโᚒᐄࡡಘྒฌ ᩐ 10MHz ࠾ ࡼ 1GHz ௧ ୕ ࡱ ࡚ ࢣ ࢕ ࣤ ࠿ ⥾ ࡷ ࠾ ࡞ ⣑⌦ᅂ㊪࡚ࡢࠉቌᖕᚃ࡞ࠔ⏍ಘྒࠕ࡛✒ฦಘྒ࡛ࢅฝ 36dB୕᪴ࡌࡾࠊス⨠ᚃࡢࢢ࣭ࣇࣜࡡ΅⾮࡛┞ṽࡌࡾງࡌࡾࠊ3-50BTࡢࣄ࣭࣑࠿1ᅂ㏳㐛ࡌࡾࡓࡄ࡝ࡡ࡚ ᪁ྡྷ࡚࠵ࡾࠊࡱࡒࠉスゝࣄ࣭࣑ᙁᗐ࡚ࡢᢤᢘࡡⓆ⇍✒ฦჹࡡࢣ࢕ࣤࢅኬࡀࡂ࡛ࡖࡒ（RC = 20ȣs）ࠊࡱ
࠿問題࡞࡝ࡾࡒࡴ✭෫ࣆ࢒ࣤࢅཱིࡽ௛ࡄࡒࠊࡒࠉ྘ಘྒࢅአ㒂࠾ࡼスᏽࡈࡿࡒ閾値電圧࡛Ẓ㍉ࡊࠉ
BPMࡡ࠹ࡔᑊみ⥲ฦ๪ᆵࡡ186ྋ（ࣛࣤࢡ⏕）ࡢ㉲ ࠻ࡒ ሔྙ ࡢ㆑ ሒಘ ྒࢅ MPS（ Machine Protectionධ࿔࡮࡯ධQ電磁石࡞隣接ࡊ࡙ス⨠ࡊࡒࠊInjectionSystem）࡫ฝງࡌࡾ@Bࠊ
dump line࡞ࡢBPM 2ྋ（ࢱࣤࣈ⏕）ࢅス⨠ࡊࡒ[7]ࠊ
ಘྒฌ⌦ᅂ㊪ࡢࠉථງᢤᢘ50Ȑ／10kȐࠉࢣ࢕ࣤࣛࣤࢡ⏕BPM࡚ࡢࠉථᑏ├ᚃࡡ5ࢰ࣭ࣤࡡన⨠ῼ
10／100／1000ࡡว᭨࠿ྊ⬗࡚࠵ࡾࠊ｜ථງ電圧｜ᏽࠉ࠽ࡻࡦථᑏᚃ1⛂間ࡡ1 ms ࡱࡒࡢ10 msẎࡡ
< 1Vࠉ｜ฝງ電圧｜< 10V（高࢕ࣤࣅ࣭ࢱࣤࢪㇿⲬCODῼᏽࢅ⾔࡝ࡖࡒ [7]ࠊࢰ࣭ࣤẎࡡన⨠ゝ⟤࡞ࡢࣁ᫤）࡚࠵ࡾࠊ✒ฦࢣ࣭ࢹࡡ時間ᖕࡢ12ms࡛ࡊࡒࠊ5ࣤࢲಘྒࡡpeak-peakೋࢅ౐⏕ࡊࡒࠊCODゝ⟤࡞ࡢࠉ
᭮ࡡ試験࡚ࡢࠉථງᢤᢘ50Ȑࠉࢣ࢕ࣤ10ࠉ高電圧１᫤็࡞ࡗࡀࠉ14bit, 80MSPS ADCᚃࡡ4096ࢦࣤࣈ
1.6 kV࡛ࡊࡒࠊ6᭮ࡡ試験࡚ࡢࠉಘྒฌ⌦ᅂ㊪ࡡථງ
ࣜⅤࢅ౐⏕ࡊࡒࠊ㏻⤾ࡌࡾ4ࢸ࣭ࢰⅤẎࢅᖲᆍࡊ1Ⅴ
ᢤᢘ10kȐࠉࢣ࢕ࣤ10ࠉ高電圧-1.1 kV࡛ࡊࡒࠊ௑ᅂ
ࡢࣄ࣭࣑ᙁᗐ࠿఩࠷ࡡ࡚ᶭჹࡡ᥾ഭࡡᠩᛍ࠿↋ࡂࠉ ࡛ࡊࠉධ㒂࡚1024ࢸ࣭ࢰⅤ（ࣛࣤࢡ9ࢰ࣭ࣤฦ）ࢅ
ࡱࡒBLMࡡࣄ࣭࣑࡞ࡻࡾ᭩⤂ㄢᩒ࠿ᮅᏰ஡ࡓࡖࡒࡡ ᚋࡾࠊࡆࡿࢅFFTࡊࠉRF࿔ἴᩐࡡ2ಶࡡ3.34 MHzࡡ࡚ࠉMPS࡫ࡡⓆሒಘྒࡢུࡄࡗࡄ࡝࠷ࡻ࠹࡞ࡊࡒࠊ
ࣅ࣭ࢠೋࢅన⨠ゝ⟤࡞౐⏕ࡊࡒࠊࡱࡒࠉRFຊ㏷ࢨࢪ
ࢷ࣑ࡡโᚒ⣌࡞ᥞ౩ࡌࡾన⨠ᇱ‵ಘྒࢅ࢓ࢻࣞࢡฌ
㸨㸣27ࡡࣄ࣭࣑チ᩷⌦ᅂ㊪@B࡚షࡖ࡙࠷ࡾࠊInjection dump line࡞ࡢࠉ୕Ὦഁ1ྋࡢࣛࣤࢡ⏕BPMࡡ஢ങဗ(I.D.ȭ200mm)ࢅࠉ
ࣄ ࣭ ࣑ ᙁ ᗐ ࢅ ῼ ᏽ ࡌ ࡾ ࡒ ࡴ ࡞ ス ⨠ ࡊ ࡒ２ ྋ ࡡDCCTࡢࠉࢹࣞ࢕ࢱࣜࢤ࢓࡛ࡊ࡙ࣆ࢒࢕࣒ࣤࢴࢹ® ୖὮഁ1ྋࡢᖲ⾔4ฦ๪ᆵࢹࣚࣤࢪ௛ࡀBPMࢅ౐⏕ࡊࢅ౐⏕ࡊ࡙࠷ࡾࠊᅂ㊪ᵋᠺࡡᕝኰ࡞ࡻࡽࢤ࢓ࡡࣁࣚ ࡙࠷ࡾࠊಘྒࡢࠉ5D4ⰲྜྷ㍂ୌᣋࢨ࣭ࣜࢺࢢ࣭ࣇࣜࢵ࢞࡞ࡻࡾࣛࢴࣈࣜࢅᢒโࡊ࡙࠷ࡾ @Bࠊ࿔ἴᩐᖈᇡ ࡚ ఎ ㏞ ᚃ ࠉ ࣞ ࣭ ࢜ ࣜ โ ᚒ ᐄ ࡡ ࢸ ࢩ ࢰ࢕ ࢧ WE7118)(ࠤ⣑N-̲࡚ࠉິషࣝࣤࢩ&&&／;࡚ （14bit, 80MHz, 100MSPS）࡞ࡻࡖ࡙ࢦࣤࣈࣛࣤࢡࡈ
࠵ࡾࠊ๑⨠&(ቌᖕᅂ㊪ࢅࠉᨲᑏ⥲ࢅ㑂ࡄࡾࡒࡴ࡞ࢦ ࡿࡾࠊࣇࢹࣤࢾࣜහࡡࠉ᳠ฝჹ࠾ࡼ⣑Pࡡሔᡜ࡞⨠࠷ࡒࠊ BPMࢸ ࣭ ࢰ ࡢ EPICS ࡞ ཱི㎲ ࢆࡓ ᚃࠉ ᰧḿ ࠉῼ 㔖
ࢸ࣭ࢰ@B ࡞ࡻࡾ⿭ḿࢅ⾔࡝࠷ࠉ㌮㐠⿭ḿ࠿⾔࡝ࢂࡿฝງࡢࣄ࣭࣑電Ὦೋ࡝ࡡ࡚ࠉࡆࡿࢅ7+࿔ἴᩐ࡚๪⟤@Bࡊ࡙ࣄ࣭࣑ᙁᗐ࡞ንᥦࡊࡒᚃࠉࢸࢩࢰ࢕ࢧ<* ࡾ ࠊ௑ᅂࡢࢣ࢕ࣤ⿭ḿࡡࡲࢅ⾔࡝ࡖࡒࠊ
BLMࡢࠉ๑⟿࡚㏑࡬ࡒẒౚゝᩐ⟮ᆵࢅ238ྋ౐⏕（GLWN-̲N858）ཱི࡚㎲ࡳࠊᥦ⟤౿ᩐࡊࡒࠊ࿔ᅂࣄ࣭࣑࡚ࣞࢪ࠿ቌ࠻ࡾࡒࡴࠉಘྒฌ⌦ᅂࡢ] ] ] SSS／;（&ࣝ㊪ࡡ✒ฦࢣ࢕ࣤࡢᑚࡈࡂࡊࡒ（RC = 20ms）ࠊ✒ฦࣤࢩ᫤）࡚࠵ࡾࠊ࢓ࢻࣞࢡಘྒࡵ࣭ࣞ࢜ࣜโᚒᐄࠉ
୯ኳโᚒᲯ࡞ฦ㒼ࡊ࡙࠷ࡾࠊ௑ᅂࡢ&ࣝࣤࢩࢅ౐⏕ ࢣ࣭ࢹࡡ᫤間ᖕࡢ100ms࡛ࡊࡒࠊ5᭮ࡡ試験࡚ࡢࠉථ
ງᢤᢘ50Ȑࠉࢣ࢕ࣤ10ࠉ高電圧-1.6 kV࡛ࡊࡒࠊ6᭮
ࡊࡒࠊ
FCT（RFన┞ࣆ࢔࣭ࢺࣁࢴࢠ⏕3ྋࠉFX kicker⏕1 ࡡ試験࡚ࡢࠉථງᢤᢘࡡࡲ10kȐ࡞ን᭞ࡊࡒࠊMPS࡫ࡡⓆሒಘྒࡢུࡄࡗࡄ࡝࠷ࡻ࠹࡞ࡊࡒࠊྋࠉふῼ⏕2ྋ）ࡢࠉ3-50BTࡡFCT࡛ྜྷᵕ࡞ࢹࣞ࢕
5᭮㐘㌹᫤ࡡࠔ⏍ಘྒࠕฝງࡡୌౚࢅᅒ1࡞♟ࡌࠊࢱࣜࢤ࢓࡛ࡊ࡙ࣆ࢒࢕࣒ࣤࢴࢹ®ࢅ౐⏕ࡊࡒ࠿ࠉ࿔ᅒ1.(a)ࡢQDR7ࠉᅒ1.(b)ࡢQFR10࡞ཱིࡽ௛ࡄࡒBLMᅂࣄ࣭࣑࡚࠵ࡾࡆ࡛ࢅ⩻៎ࡊ࡙ࠉᇱᮇᵋᠺࡢ２ḗࢤࡡಘྒ࡚࠵ࡾࠊQDR7（➠1ࢤ࣒࣭ࣛࢰୖὮ）࡚ࡢ᭩
࢕ࣜᕬ⥲50ࢰ࣭ࣤ࡞25Ȑ（50Ȑ2୩า）ㇿⲬࢅཱིࡽ௛ࡄ࡙࠷ࡾࠊࡆࡡࡱࡱ࡚ࡢࠉ10ᩐMHz௧୕࡚ཬභᣲࠉ ิࡡ2ࢰ࣭ࣤࠉQFR10（➠3ࢤ࣒࣭ࣛࢰୖὮ）࡚ࡢ᭩
࠽ࡻࡦ100M - 200MHz௛㎾࡚භᣲ࠿Ⓠ⏍ࡊࡒࡡ࡚ࠉ ิࡡ1ࢰ࣭ࣤࡡࡲ࡚ࣞࢪ࠿Ⓠ⏍ࡊ࡙࠷ࡾࡆ࡛࠿ࢂ࠾ࡾࠊMPSࡡさị᫤間<100ȣs࡞Ẓ࡬࡙༎ฦ㏷࠷ᚺ➽ཬභᣲࡢࢤ࢕ࣜᕬ⥲間࡞ᢤᢘ100Ȑࢅྙゝ50಴ཱིࡽ௛ࡄ࡙΅⾮ࡈࡎࠉභᣲࡢࢬ࣐ࣚࢴࢠ࢟ࣔࢴࣈ࡞180 ࢅࡊ࡙࠷ࡾࡆ࡛࠿ࢂ࠾ࡾࠊ-299-

Proceedings of the 5th Annual Meeting of Particle Accelerator Society of Japanand the 33rd Linear Accelerator Meeting in Japan (August 6-8, 2008, Higashihiroshima, Japan)(a)

1st turn

2nd turn(b)1st turn ᅒ1: BLMࡡᚺ➽（5᭮ࡡ㐘㌹）6᭮㐘㌹᫤࡞ࡢࠉ✒ฦಘྒฝງࡡࣄ࣭࣑ᙁᗐ࣓ࢼࢰ࣭࡞ࡻࡾᰧḿࢅモࡲࡒࠊࣄ࣭࣑ᙁᗐ࣓ࢼࢰ࣭࡞ࡻ
ࡾࣞࢪ㔖࡛BLM✒ฦಘྒධ࿔ࡡ⥪࿰࡛ࡡ間࡞ࡢࠉ⣑s20%ࡡࣁࣚࢵ࢞ࡡ⠂ᅑහ࡚Ẓౚ間౿࠿ࡲ࡛ࡴࡼࡿ
ࡒࠊ௑ᚃࡈࡼ࡞ࢸ࣭ࢰࢅ✒ࡲ㔔ࡠࠉࣄ࣭࣑ࣞࢪ㔖ࡡ⢥ᗐࢅྡྷ୕ࡈࡎ࡙࠷ࡂ஢ᏽ࡚࠵ࡾࠊ௑ᅂࡡᰧḿ⤎ᯕࡡࡲ࠾ࡼ試験Ⓩ࡞ࠉ✒ฦಘྒ電ᅸೋ࠾ࡼࣄ࣭࣑ࣞࢪ㔖࡞ᥦ⟤ࡊࡒ⤎ᯕࢅᅒ2࡞♟ࡌࠊMRࡡୌ⯙༇間ࡡࣞࢪ୕限ೋ0.5W/m[1]ࡢࠉ3GeV࡞࠽࠷࡙5.9x1012 protons（ 3.64s ࿔ ᭿ ࡡ ሔ ྙ） ࠉ 0.5W ༟ ≺ ࣞ ࢪ ࡢ 3.8x109
protons࡞ᑊᚺࡌࡾࠊᅒࡻࡽࠉࡆࡿࡼࡡࣞࢪࢅ᳠ฝࡌ
ࡾࡡ࡞༎ฦ࡝វᗐࢅᣚࡖ࡙࠷ࡾࡆ࡛࠿ࢂ࠾ࡾࠊࣜ ࢰ ࢕ ࣑ ࣬ ࢪ ࣋ ࢠ ࢹ ࣚ ࣑ ࣬ ࢓ ࢻ ࣚ ࢕ ࢧ（RSA3408A）࡞ථງࡊࠉEPICS࡞ࡻࡽIQࢸ࣭ࢰࢅཱི㎲ࡲࠉ࿔ἴᩐよᯊࢅ⾔࡝ࡖ࡙࠷ࡾࠊ௑ᅂࡡࢲ࣭ࣖ
ࣤῼᏽࡡฦよ⬗ࡢ~0.007࡚࠵ࡖࡒࠊᅒ3࠿Sextupole電☚▴ON᫤ࡡỀᖲ᪁ྡྷ࣭࣊ࢰࢹࣞࣤᣲິࡡ࿔ἴᩐࢪ
࣋ࢠࢹ࡚ࣜ࠵ࡾࠊ༎ฦ࡝SN࠿ཱིࡿ࡙࠷ࡾࠊSextupole
電☚▴OFF᫤ࡵSNࡢࡷࡷᝇ໩ࡌࡾ࠿問題࡝ࡂῼᏽ࡚
ࡀࡒࠊᅒ4ࡢථᑏᚃ120ms間ࡡࢲ࣭ࣖࣤࡡን໩࡚࠵ࡾࠊ
電″ࣛࢴࣈࣜ࡞ࡻࡾንິ࠿ぜࡼࡿࡾࠊ ᅒ3: Ềᖲ᪁ྡྷࢲ࣭ࣖࣤࡡ࿔ἴᩐࢪ࣋ࢠࢹࣜ ᅒ4: Ềᖲ᪁ྡྷࢲ࣭ࣖࣤࡡ᫤間ን໩ᅒ2: ࣅ࣭࣑ࣞࢪࢅ陽子ᩐ࡞ᥦ⟤ࡌࡾモࡲධ࿔ࣞࢪฦᕱࡡࣈࣞࢴࢹࠊ青⥲βx, ㉝⥲βy, ᶫ⥲ηxࠊ㸩㸣ࡱ࡛ࡴ/5&7( 27 ࡡ ࣄ ࣭ ࣑ ࢤ ࣐ ࢴ ࢨ ࣘ ࢼ ࣤ ࢡ ࡞ ࠽ ࡄ ࡾࣄ࣭࣑チ᩷⿞⨠ࡢࠉࣄ࣭࣑ᙁᗐ࠿スゝೋࡡ⣑（ࣁࣤࢲᙔࡽ）࡚࠵ࡽࠉ.,'9࡝࡜ࡡࢪ࢕ࢴࢲࣤࢡ電″ࡡථᑏࣄ࣭࣑ࡡࣈࣞࣆ࢒࢕ࣜῼᏽࡡࡒࡴ࡞ࠉථᑏࢬ
ࢿ࢕ࢫ࠿ᩐ2-̲ࡱ࡚⿍ࡖ࡙࠷ࡾཚࡊ࠷≟Ἓ࡚࠵ࡖࡒ
ࣈࢰ࣑ୖὮ࡞MWPMࢅス⨠ࡊࡒ@Bࠊࢦ࢕ࢫ௧አࡢᇱ
࠿@Bࠉຊ㏷ჹㄢᩒ࡞༎ฦ࡝ᶭ⬗ࢅᯕࡒࡊࡒࠊ௑ᚃ
ᮇⓏ࡞3-50BTࡡࡵࡡ࡛ྜྷᵕ࡚࠵ࡾࠊ
᭮ࡡࣄཱི࣭࣑ࡽฝࡊ࡞ᚪさ࡝ᶭჹࡡᩒങࢅ⾔ࡖ࡙࠷Ềᖲ᪁ྡྷࣈࣞࣆ࢒࢕ࣜῼᏽ࡞⏕࠷ࡒFlying wireࡢࠉ ࡂࠊ࣭࢜࣍ࣤ࣬ࣆ࢒࢕ࣁ࣭ȭ7ȣmࢅ࢓࣐ࣜࢼ࣑ࢗࡡࣆ
࣭࣑ࣝ࡞ᘿࡽࠉ10m/s࡚ࣄ࣭࣑ࢅᶋวࡾ᫤࡞Ⓠ⏍ࡌ ཤ⩻ᩝ⊡
ࡾ２ḗ⢇Ꮔࢅふῼࡊ࡙࠷ࡾ@Bࠊ
[1] T. Koseki et al., these proceedings.
ᆱ├᪁ྡྷࣈࣞࣆ࢒࢕ࣜῼᏽ࡞⏕࠷ࡒIPMࡢࠉṟ⏻ [2] S. Motohashi et al., these proceedings.
࢝ࢪ࡛ࣄ࣭࣑࡛ࡡ⾢✲࡞ࡻࡽⓆ⏍ࡌࡾ電離イオン電[3] Y. Hashimoto et al., these proceeings.
[4] S. Lee et al., Proc. of the 3rd Ann. Meeting of Part. Acc. Soc.
子対のうち、࢕࢛ࣤࢅ30kVࡡ静電場࡞ࡻࡽ収集ࡊࠉ
of Japan (2006).
MCP࡚ቌᖕࡈࡿࡒಘྒࢅふῼࡊ࡙࠷ࡾ@Bࠊ
[5] H. Nakagawa et al., Proc. of the 4th Ann. Meeting of Part.
FW࠽ࡻࡦIPMࡢࠉࢤ࣐ࢴࢨࣘࢼࣤࢡᙔิࣄ࣭࣑ࣞ
Acc. Soc. of Japan (2007).
ࢪࡡࣁࢴࢠࢡࣚࣤࢺ࠿問題࡛࡝ࡖࡒ࠿ࠉ㌮㐠ㄢᩒᚃ[6] S. Hiramatsu et al., Proceedings of the 12th Symp. on Acc.
Sci. and Tech. (1999) p. 561.
ಘྒ࠿ᚋࡼࡿࡒࠊࢲ࣭ࣖࣤῼᏽ࡞ࡢࠉỀᖲ࣬ᆱ├ࡐࡿࡑࡿ１⤄ࡡ࢙ [7] T.Toyama, et al., Proc. of the 4th Annual Meeting of Part.
Acc. Soc. of Japan (2007).
࢞ࢦ࢕ࢰ࣭࡛BPMࢅ౐⏕ࡊࡒ @B ࠊ࢙࢞ࢦ࢕ࢰ࣭（50 [8] D. Arakawa et al., these proceeings.
Ȑࢪࢹࣛࢴࣈࣚ࢕ࣤ࣬࢞ࢴ࣭࢜）ࡢ２ࡗࡡࣂ࣭࣠࢓
[9] K.Hanamura et al., these proceedings.
[10] J. Takano et al., these proceedings.
ࣤࣈࡡᕣິ電ᅸ࡚駆動ࡈࡿࡾࠊ྘࢓ࣤࣈ࡞ࡻࡽ1M 2MHzࡡᖈᇡᖕࡡ࣌࣠࢕ࢹࢿ࢕ࢫ⣑800Wࢅථງࡊࡒࠊ [11] S. Igarashi et al., these proceedings.
[12] K. Satou, et. al., these proceedings.
࣭࣊ࢰࢹࣞࣤࢲ࣭ࣖࣤࡢQFR10ࡡBPMࡡỀᖲ᪁ྡྷ,[13] M. Tejima et al., these proceedings.
QDR09ࡡBPMࡡᆱ├᪁ྡྷࡡࡐࡿࡑࡿࡡᕣಘྒࢅࣛ࢓-300-