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)

ELEMENT R&D FOR X-RAY GENERATOR ELECTRON GUN
Satoshi Ohsawa 1,A), Mitsuo Ikeda A) , Takashi Sugimura A), Masafumi Tawada A),
Yasufumi Hozumi B), Kouichi Kanno C)
A)High Energy Accelerator Research Organization, Accelerator Laboratory
B)
Graduate Univ. for Advanced Studies
1-1 Oho, Tsukuba, Ibaraki 305-0801
C)
AET Japan Inc., 1-2-3 Manpukuji, Azabu-ku, Kawasaki, Kanagawa 215-0004
AbstractA new electron-gun system is under development in order to increase X-ray brightness from a rotating target. In
commercial X-ray generators, an electron beam hits a target at outside. Owing to deformation by centrifugal force, there
has been a limit on the electron beam intensity. In order to overcome this difficulty, our new system focuses electrons
inside of a rotating target. It has an advantage in that a heated-up point has support back side against centrifugal force.
It is expected that this merit makes it possible to raise beam brightness to give stronger X-rays with brightness morethan 10 times higher. We succeeded in focusing an electron beam of 60keV, 73mA as small as 2.1x0.24 mm2.

X✢⊒↢↪㔚ሶ㌂ߩⷐ⚛㐿⊒⎇ⓥ
㧝㧚ߪߓ߼ߦ:✢⊒↢ⵝ⟎ߪᏒ⽼ߐࠇߡ߅ࠅ‫⎇ޔ‬ⓥቶߢᐢߊ↪޿ࠄࠇߡ޿ࠆ‫ߩߘޕ‬ノᐲࠍᩴ਄ߍࠆߎߣߪ಴᧪ߥ޿߆㧫 ߎߩᄞࠍታ⃻ߔߴߊဈㇱ⍮ᐔ᳁ߪࠦߩሼဳ࿁ォኻ㒶ᭂࠍ⊒᩺ߒ‫ߩߘޔ‬ౝ஥ߦ㔚ሶࡆ࡯ࡓࠍᾖ኿ߔࠆߎߣߦࠃࠅ‫ޔ‬:✢ߩノᐲࠍᩴ਄ߍࠆߎߣ߇಴᧪ࠆߣឭ᩺ߒߚ‫ޕ‬ߎߩ᩺ࠍታ⃻ߔࠆߚ߼ߦߪ‫ߩࠦޔ‬ሼဳ࿁ォኻ㒶ᭂߩౝㇱߦ㔚ሶࡆ࡯ࡓࠍ㓸᧤ߔࠆߚ߼ߩዊဳߩ㓸᧤♽߇ᔅⷐߢ޽ࠆ‫ߢߎߘޕ‬⠨߃ࠄࠇߚߩ߇‫ޔ‬ዊဳߩ᳗ਭ⏛⍹ߢᐲࡆ࡯ࡓࠍ஍ะߒ‫ޔ‬หᤨߦࠛ࠶߽ࠫߒߊߪ൨㈩⏛႐ߢ㓸᧤ߔࠆ᩺ߢ޽ࠆ‫ߩߎޕ‬᩺ߩ೑ὐߪ‫ޔ‬⍴޿ὶὐ〒㔌ߢᒝߊ㓸᧤ߔࠆߎߣߦࠃࠅ‫ࠍ࠭ࠗࠨࡓ࡯ࡆޔ‬ዊߐߊߔࠆߎߣ߇น⢻ߢ޽ࠆߎߣߢ޽ࠆ‫ޕ‬ᧄ⎇ⓥߩ⺖㗴ߪ‫ޔ‬ᐲ஍ะ⏛⍹ࠍ↪޿ߚ㓸᧤♽ߩᕈ⢻ࠍታ㛎⊛ߦ⹏ଔߔࠆߎߣߢ޽ࠆ‫ޕ‬ᤓᐕᐲᓟඨߦ⑼ቇᛛⴚᝄ⥝ᯏ᭴ߩᆔ⸤ࠍฃߌ‫ࡓ࡯ࡆޔ‬㓸᧤♽ߩౕ૕⊛ߥ⸳⸘ߣ⵾૞ࠍᆎ߼‫⃻ޔ‬࿷ࡆ࡯ࡓࠍ↪޿ߚᕈ⢻⹜㛎ࠍⴕߞߡ޿ࠆ‫ޕ‬㓙‫ޔ‬஍ะ⏛⍹ߩࠛ࠶ࠫ㓸᧤ࠍ↪޿ߡ‫ޔ‬yᣇะߩࡆ࡯ࡓࠨࠗ࠭ࠍᭂዊߦߔࠆ‫࡞ࠗࠦࠣࡦ࡝ࠕ࠹ࠬޕ‬ߪ‫౉ޔ‬኿ⷺࠍᄌ߃‫ࠫ࠶ࠛޔ‬㓸᧤ߩᒝߐࠍ⺞ᢛߔࠆߩߦ↪޿ࠆ‫ޕ‬ᮡ⊛ߢ⊒↢ߒߚ․ᕈX✢ࠍ‫ࡦࡇޔ‬ࡎ࡯࡞ࠞࡔ࡜ߩේℂࠍ↪޿ߚశቇ᷹ቯ♽ߢ᷹ⷰߒ‫ޔ‬ᮡ⊛਄ߩ㔚ሶࡆ࡯ࡓࠨࠗ࠭ࠍ᷹ቯߔࠆ‫ޕ‬eCollimatorxML
Q-magnet
Pin holez
ST magnet
Fluorescent Screen
10.4q
Target
X-raye
Optical System
CameraMCP
 Bending magnet࿑㧦:✢⊒↢ⵝ⟎ߣశቇ᷹ቯ♽ߩ᭴ᚑ࿑

㧞㧚ⵝ⟎ߩ᭴ᚑ ߎߩⵝ⟎ߪ‫ޔ‬㔚ሶ㌂ߣࡆ࡯ࡓߩ㓸᧤♽‫ޔ‬෸߮శ 㧟㧚ታ㛎ߩ⚻✲ߣ᷹ቯ⚿ᨐቇ᷹ቯ♽ߩ3ߟߩㇱಽ߆ࠄᚑࠆ‫ޕ‬㔚ሶ㌂߆ࠄ಴ߚࡆ࡯ࡓࠍ߹ߕ⋥ᓘ3mmߩࠦ࡝ࡔ࡯࠲࡯ߢಾࠅ಴ߒ‫ ޔ‬3.1 ታ㛎ߩ⚻✲⏛᳇࡟ࡦ࠭㧔ML㧕ߣ྾ᭂ⏛⍹ߢ㓸᧤ߒߚᓟ‫ޔ‬஍ᮡ⊛ߢߩ⊒ᾲࠍㆱߌࠆߚ߼ߦ‫ޔ‬ታ㛎ߦߪࡑࠗࠢࡠะ⏛⍹ߢ180ᐲᦛߍ‫ޔ‬࿕ቯߩᮡ⊛ߦᒰߡࠆ‫੍ޔߒ߆ߒޕߚߒߦߣߎࠆ޿↪ࠍࡓ࡯ࡆࠬ࡞ࡄߩ⑽ ߩߘޕ‬1

E-mail: satoshi.ohsawa@kek.jp-E-25-

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)஻⊛ߥታ㛎ߩ⚿ᨐ‫ߩ࡞࡯ࡎࡦࡇޔ‬ᓘࠍPO߹ߢዊߐߊߔࠆߣ‫ࡓ࡯ࡆޔ‬௝ߩノᐲਇ⿷ߦߥࠆߎߣ߇್᣿ߒߚ‫ߩߎޕ‬໧㗴ߪࡑࠗࠢࡠ࠴ࡖࡦࡀ࡞ࡊ࡟࡯࠻
㧔/%2㧕ࠍዉ౉ߒนⷞశࠍჇ᏷ߔࠆߎߣߢ⸃᳿ߒߚ‫ޕ‬߹ߚᐲ஍ะ⏛⍹ߩṳࠇ⏛႐ߩᓇ㗀ߢ‫⏛ߩߘޔ‬႐ᒝᐲࠍ਄ߍࠆߣ‫⏛ߩ࡞ࠗࠦࠣࡦ࡝ࠕ࠹ࠬޔ‬႐ᒝᐲ߇ਇ⿷ߒ‫ᦨޔ‬ㆡߥ౉኿ⷺ߇ᓧࠄࠇߥ޿ߣ޿߁໧㗴߇⊒↢ߒߚ‫⥄ߪࠇߎޕ‬૞ߒߚࠦࠗ࡞ߩᏎ߈ᢙਇ⿷ߦࠃࠆ߽ߩߢ‫ࠍ࡞ࠗࠦޔ‬ౣ⵾૞ߒߡ⸃᳿ߒߚ‫ޕ‬㪪㫇㫆㫋㩷㫊㫀㫑㪼㩷㫆㫅㩷㫊㪺㫉㪼㪼㫅㩷㪲㫄㫄㪴㪇㪅㪍㪮㫏㪮㫐✢ᒻ㩷㩿㪮㫐㪀✢ᒻ㩷㩿㪮㫏㪀㪇㪅㪌㪇㪅㪋㫐㩷㪔㩷㪇㪅㪇㪇㪌㪊㫏㩷㪂㩷㪇㪅㪇㪏㪌㪐㪇㪅㪊㪇㪅㪉㪇㪅㪈㫐㩷㪔㩷㪇㪅㪇㪇㪌㪍㫏㩷㪂㩷㪇㪅㪇㪍㪍㪌㪇㪇

3.2  㔚ሶࡆ࡯ࡓ௝ߩ᷹ቯ଀㪉㪇㪋㪇㪍㪇㪏㪇㪈㪇㪇㪪㪺㫉㪼㪼㫅㩷㫇㫆㫊㫀㫋㫀㫆㫅㩷㪽㫉㫆㫄㩷㪺㫆㫃㫃㫀㫄㪸㫋㫆㫉㩷㪲㫄㫄㪴㔚ሶࡆ࡯ࡓ௝ࠍࡇࡦࡎ࡯࡞ࠞࡔ࡜ߩේℂߢ᷹ቯߒߡ޿ࠆ =? ‫ޕ‬㌃᧼ᮡ⊛ߩ⴫㕙ߢ⊒↢ߔࠆ․ᕈ:✢ࠍ↪
޿ߡ޿ࠆߩߢ‫ߚ޿↪ࠍࡦ࡯࡝ࠢࠬߩ‛✼⛘ޔ‬นⷞశߦࠃࠆ᷹ቯࠃࠅ߽ߦߓߺ߇ዋߥ޿೑ὐ߇޽ࠆ‫ޕ‬࿑㧠㧦Ⱟశ᧼ߩ૏⟎ࠍᄌ߃ߡ᷹ቯߒߚ:✢ࠬࡐ࠶࠻ࠨࠗ࠭ߩᄌൻ
3.4 㔚ሶࡆ࡯ࡓࠨࠗ࠭ߩ▚಴ᑼశቇ᷹ቯ♽ߢ᷹ⷰߒߚⰯశ᧼਄ߩX✢ࠬࡐ࠶࠻ࠨࠗ ࠭ 'x, 'y ߆ ࠄ ‫ ޔ‬ᮡ ⊛ ਄ ߩ 㔚 ሶ ࡆ ࡯ ࡓ ࠨ ࠗ ࠭Wx , Wy ࠍ▚಴ߔࠆߩߦᰴᑼࠍ↪޿ߚ‫ޕ‬('x  dx  Ed c ) / E sin T ('y  dy  Ed c ) / EWxWyߎߎߢ dx, dy ߪ਄ߩ3.3ߢ᳞߼ߚಽ⸃⢻ߢ‫ ޔ‬E ߪ࿑ 㧞 㧦 శ ቇ ᷹ ቯ ♽ ߢ ⷰ ᷹ ߒ ߚ Ⱟ శ ᧼ ਄ ߩ X✢ ࠬࡐ࠶࠻௝㪙㫉㫀㪾㪿㫋㫅㪼㫊㫊㩷㫆㪽㩷㫇㫀㪺㫋㫌㫉㪼㩷㪼㫃㪼㫄㪼㫅㫋㪍㪇㪌㪇శቇ♽ߩ୚₸(ࠦ࡝ࡔ࡯࠲࡯߆ࠄ᷹ߞߚࠬࠢ࡝࡯ࡦ߹ߢߩ〒㔌ߣ㔚ሶࡆ࡯ࡓࠬࡐ࠶࠻߹ߢߩ〒㔌ߩᲧ)ࠍ⴫ߔ‫ ߚ߹ޕ‬T ߪᮡ⊛㕙ߣ᷹ቯ♽ߩߥߔⷺᐲߢ޽ࠆ‫ޕ‬d c ߪࠦ࡝ࡔ࡯࠲࡯ߩ⋥ᓘߢ‫ ޔ‬Ed c ߪή㒢ዊశḮߦࠃࠆࡇࡦࡎ࡯࡞௝ߩჇᄢಽߢ޽ࠆ‫ޕ‬㪭㪼㫉㫋㫀㪺㪸㫃㩷㪹㪼㪸㫄㩷㫊㫀㫑㪼㩷㪮㫐㩷㩿㪝㪮㪟㪤㪀㩷㪔㩷㪇㪅㪉㪋㪎㩷㫄㫄㪋㪇

3.5 㔚ሶࡆ࡯ࡓࠨࠗ࠭ߩ᷹ቯ⚿ᨐ㪊㪇એਅߦ㓸᧤᧦ઙࠍ᭽‫ߦޘ‬ᄌ߃ߡ᷹ቯߒߚ㔚ሶࡆ࡯ࡓࠨࠗ࠭ߩᄌൻߩ᭽ሶࠍ␜ߔ‫Ⱟޔ߽ࠇߕ޿ޕ‬శ᧼ߩ૏⟎ࠍ E 㧩1.15‫ ޔ‬T 10.4q ߦ࿕ቯߒߡ᷹ቯߒߚ‫ޕ‬㪉㪇㪈㪇㪇㪈㪌㪇㪉㪇㪇㪉㪌㪇㪊㪇㪇㪊㪌㪇㪋㪇㪇㪋㪌㪇㪇㪅㪋㪌㪌㪇㪇㪥㫌㫄㪹㪼㫉㩷㫆㪽㩷㫇㫀㪺㫋㫌㫉㪼㩷㪼㫃㪼㫄㪼㫅㫋㩷㩿㪹㫀㫋㪀㪭㪼㫉㫋㫀㪺㪸㫃㩷㫊㫀㫑㪼㩷㪮㫐㩷㪲㫄㫄㪴࿑㧟㧦਄ߩX✢ࠬࡐ࠶࠻௝ߩု⋥ᢿ㕙ノᐲಽᏓ‫ޕ‬ߎߩ࠺࡯࠲߆ࠄ‫[ޔ‬ᣇะߩ㔚ሶࡆ࡯ࡓࠨࠗ࠭㧔ඨ୯᏷㧕߇OOߣ▚಴ߐࠇࠆ‫ޕ‬
3.3 ᷹ቯⵝ⟎ߩಽ⸃⢻:✢Ⱟశ᧼ߩ૏⟎ࠍᄌ߃ߡ‫ޔ‬:✢ࠬࡐ࠶࠻ࠨࠗ࠭ߩᄌൻࠍ᷹ቯߒߚ⚿ᨐ߇࿑㧠ߢ޽ࠆ‫[ߣ✢⋥ߩᧄޕ‬ゲߩ੤ὐߩ୯ dx ‫ ޔ‬dy ߇‫ޔ‬Z෸߮[ᣇะߩಽ⸃⢻ࠍ␜ߒߡ߅ࠅ‫ ࠇߙࠇߘޔ‬dx

67 Pm ߣ dy㪋㪅㪌㪭㪼㫉㫋㫀㪺㪸㫃㩷㫊㫀㫑㪼㩷㪮㫐㪟㫆㫉㫀㫊㫆㫅㫋㪸㫃㩷㫊㫀㫑㪼㩷㪮㫏㪇㪅㪋㪇㪅㪊㪌㪊㪅㪌

㪇㪅㪊

㪊㪇㪅㪉㪌

㪉㪅㪌㪇㪅㪉㪉㪇㪅㪈㪌㪈㪅㪌㪇㪅㪈㪈

㪇㪅㪇㪌

㪇㪅㪌㪇

㪇
㪉㪅㪍㪉㪅㪎㪉㪅㪏㪉㪅㪐㪊㪊㪅㪈㪟㫆㫉㫀㫑㫆㫅㫋㪸㫃㩷㫊㫋㪼㪼㫉㫀㫅㪾㩷㫄㪸㪾㫅㪼㫋㩷㪺㫌㫉㫉㪼㫅㫋㩷㪲㪘㪴

86Pm ߢ޽ࠆ‫ޕ‬ߎࠇࠄߩౝ⸶ߪ‫ߩ࡞࡯ࡎࡦࡇޔ‬ᄢ߈ߐPOߣᥧⷞࠞࡔ࡜ߩ↹⚛ߩᄢ߈ߐPO Zᣇะ PO㧔[ᣇะ㧕‫߮ࠃ߅ޔ‬/%2ߣశቇ♽ߦ⿠࿃ߔࠆ௝ߩࡏࠤߢ޽ࠆ‫ޕ‬㪋㪟㫆㫉㫀㫑㫆㫅㫋㪸㫃㩷㫊㫀㫑㪼㩷㪮㫏㩷㪲㫄㫄㪴㪈㪇㪇࿑㧡㧦ࠬ࠹ࠕ࡝ࡦࠣࠦࠗ࡞㔚ᵹߣࡆ࡯ࡓࠨࠗ࠭࿑㧡ߪ‫ޔ‬180ᐲ஍ะ⏛⍹ߦ౉ࠆ౉኿ⷺࠍᄌ߃ߡ‫ޔ‬ࠛ࠶ࠫ㓸᧤ߩᒝߐߦኻߔࠆᔕ╵ࠍ⷗ߡ޿ࠆ‫ޕ‬࿑㧢ߪ‫ޔ‬྾ᭂ⏛⍹ߩ㔚ᵹߦኻߔࠆࡆ࡯ࡓࠨࠗ࠭ߩᄌൻߢ‫ޔ‬࿑㧣ߪߘߩᤨߩ࠲࡯ࠥ࠶࠻ߦᾖ኿ߒߚࡆ࡯ࡓ

-E-26-

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)㔚ᵹߢ޽ࠆ‫ߚ߹ޕ‬࿑㧤ߪ‫ޔ‬180ᐲ஍ะ⏛⍹ߩᒝᐲࠍᄌ߃ߚ႐วߩࡆ࡯ࡓࠨࠗ࠭ᄌൻߢ޽ࠆ‫ޕ‬޿ߕࠇߩ⏛⍹ߩᄌൻߦኻߒߡ߽‫ߩ࠭ࠗࠨࡓ࡯ࡆޔ‬2.1mm, W y㪏㪇

0.24mm ઃㄭߦ޽ࠆ‫ޕ‬㪎㪇㪇㪅㪋㪌㪋㪅㪌㪭㪼㫉㫋㫀㪺㪸㫃㩷㫊㫀㫑㪼㩷㪮㫐㪟㫆㫉㫀㫊㫆㫅㫋㪸㫃㩷㫊㫀㫑㪼㩷㪮㫏㪋㪇㪅㪊㪌㪊㪅㪌㪇㪅㪊㪊㪇㪅㪉㪌㪉㪅㪌㪇㪅㪉㪉㪇㪅㪈㪌㪈㪅㪌㪇㪅㪈㪈㪇㪅㪇㪌㪇㪅㪌㪇㪟㫆㫉㫀㫊㫆㫅㫋㪸㫃㩷㫊㫀㫑㪼㩷㪮㫏㩷㪲㫄㫄㪴㪇㪅㪋㪭㪼㫉㫋㫀㪺㪸㫃㩷㫊㫀㫑㪼㩷㪮㫐㩷㪲㫄㫄㪴㪙㪼㪸㫄㩷㫇㪼㪸㫂㩷㪺㫌㫉㫉㪼㫅㫋㪲㫄㪘㪴ߎߩߣ߈ߩࡆ࡯ࡓ㔚ᵹߪ 73mA ߢ޽ࠆ‫ޕ‬㪇㪅㪍㪇㪅㪎㪇㪅㪏㪇㪅㪐㪈㪈㪅㪈㪈㪅㪉㪋㪇㪊㪇㪉㪇㪇㪇㪈㪇㪉㪇㪊㪇㪋㪇㪌㪇㪍㪇㪎㪇㪞㫉㫀㪻㩷㫇㫌㫃㫊㪼㩷㫍㫆㫃㫋㪸㪾㪼㩷㪲㪭㪴࿑㧥㧦ࡆ࡯ࡓ㔚ᵹߣ㔚ሶ㌂ࠣ࡝࠶࠼㔚࿶㪈㪅㪊㪨㫌㪸㪻㫉㫌㫇㫆㫃㪼㩷㫄㪸㪾㫅㪼㫋㩷㪺㫌㫉㫉㪼㫅㫋㩷㪲㪘㪅㪬㪅㪴㪇㪅㪍࿑㧢㧦྾ᭂ⏛⍹㔚ᵹߣࡆ࡯ࡓࠨࠗ࠭㪍㪭㪼㫉㫋㫀㪺㪸㫃㩷㫊㫀㫑㪼㩷㪮㫐㪟㫆㫉㫀㫊㫆㫅㫋㪸㫃㩷㫊㫀㫑㪼㩷㪮㫏㪭㪼㫉㫋㫀㪺㪸㫃㩷㫊㫀㫑㪼㩷㪮㫐㩷㪲㫄㫄㪴㪇㪅㪌㪈㪇㪇㪐㪇㪙㪼㪸㫄㩷㫇㪼㪸㫂㩷㪺㫌㫉㫉㪼㫅㫋㩷㪲㫄㪘㪴㪌㪇㪈㪇㪇㪇㪅㪌㪍㪇㪏㪇㪎㪇㪍㪇㪌㪇㪅㪋㪋㪇㪅㪊㪊㪇㪅㪉㪉㪇㪅㪈㪈㪌㪇㪋㪇㪟㫆㫉㫀㫊㫆㫅㫋㪸㫃㩷㫊㫀㫑㪼㩷㪮㫏㩷㪲㫄㫄㪴ᦨዊ୯߇ Wxߪߥ޿‫ߚ߹ޕ‬࿑ߪ‫ߩ࠭ࠗࠨࡓ࡯ࡆߩ߈ߣߩߎޔ‬ᄌൻࠍ⴫ߒߡ޿ࠆ‫ޕ‬㪊㪇㪇㪉㪇㪇㪇㪈㪇㪉㪇㪊㪇㪋㪇㪌㪇㪍㪇㪎㪇㪞㫉㫀㪻㩷㫇㫌㫃㫊㪼㩷㫍㫆㫃㫋㪸㪾㪼㩷㪲㪭㪴㪈㪇㪇㪇㪅㪌㪇㪅㪍㪇㪅㪎㪇㪅㪏㪇㪅㪐㪈㪈㪅㪈㪈㪅㪉࿑㧝㧜㧦ࡆ࡯ࡓࠨࠗ࠭ߣࡆ࡯ࡓ㔚ᵹ㪈㪅㪊㪨㫌㪸㪻㫉㫌㫇㫆㫃㪼㩷㫄㪸㪾㫅㪼㫋㩷㪺㫌㫉㫉㪼㫅㫋㩷㪲㪘㪅㪬㪅㪴㧠㧚⠨ኤ࿑㧣㧦࿑㧢ߩฦ᷹ቯ୯ߦኻᔕߔࠆࡆ࡯ࡓ㔚ᵹ㪇㪅㪋㪌㪋㪅㪌㪭㪼㫉㫋㫀㪺㪸㫃㩷㫊㫀㫑㪼㩷㪮㫐㪟㫆㫉㫀㫊㫆㫅㫋㪸㫃㩷㫊㫀㫑㪼㩷㪮㫏㪋㪇㪅㪊㪌㪊㪅㪌㪇㪅㪊㪊㪇㪅㪉㪌㪉㪅㪌㪇㪅㪉㪉㪇㪅㪈㪌㪈㪅㪌㪇㪅㪈㪈㪇㪅㪇㪌㪇㪅㪌㪇㪟㫆㫉㫀㫊㫆㫅㫋㪸㫃㩷㫊㫀㫑㪼㩷㪮㫏㩷㪲㫄㫄㪴㪇㪅㪋㪭㪼㫉㫋㫀㪺㪸㫃㩷㫊㫀㫑㪼㩷㪮㫐㩷㪲㫄㫄㪴ࠪࡒࡘ࡟࡯࡚ࠪࡦߢߪࡆ࡯ࡓ߇ (1mm,0.1mm) =?‫ޔ‬ߦߥࠆ߇‫ޔ‬᷹ቯ୯߇ (2.1mm,0.24mm) ߦ೙㒢ߐࠇߡ޿ࠆℂ↱ߪ‫ޔ‬㔚ሶࡆ࡯ࡓߩࠛࡒ࠶࠲ࡦࠬߩᏅߦ޽ࠆߣ⠨߃ࠄࠇࠆ‫ޕ‬ታ㓙ߣ㈩⟎ߪࠪࡒࡘ࡟࡯࡚ࠪࡦߣ⇣ߥࠅ‫ޔ‬㓁ᭂߣࠦ࡝ࡔ࡯࠲࡯ߩ㑆ߦEOߩⓨ㑆߇޽ࠆ‫)'ޕ‬70ߩ⸘▚ߦࠃࠆߣ‫ߩߎޔ‬㑆ߢࠛࡒ࠶࠲ࡦࠬ߇⚂୚ߦᖡൻߔࠆ‫ޕ‬ᓥߞߡ‫ߩߎޔ‬ⓨ㑆ࠍήߊߖ߫‫ޔ‬੍ቯㅢࠅߩࡆ࡯ࡓࠨࠗ࠭߇ᓧࠄࠇࠆߣᦼᓙߐࠇࠆ‫ޕ‬㧡㧚⻢ㄉဈㇱ⍮ᐔవ↢ߦߪ‫ޔ‬:✢᷹ቯߦߟ޿ߡᄙᄢߥࠆߏഥ⸒ߣߏදജࠍ㗂߈߹ߒߚ‫ޕ‬ᷓߊᗵ⻢޿ߚߒ߹ߔ‫ޕ‬㪇㪉㪅㪉㪌㪉㪅㪉㪎㪉㪅㪉㪐㪉㪅㪊㪈㪉㪅㪊㪊㪉㪅㪊㪌㪉㪅㪊㪎㪉㪅㪊㪐㪙㪼㫅㪻㫀㫅㪾㩷㫄㪸㪾㫅㪼㫋㩷㪺㫌㫉㫉㪼㫅㫋㩷㪲㪘㪴ෳ⠨ᢥ₂࿑㧤㧦180ᐲ஍ะ⏛⍹㔚ᵹߣࡆ࡯ࡓࠨࠗ࠭࿑㧥ߪ‫ࡓ࡯ࡆޔ‬㔚ᵹߣ㔚ሶ㌂ࠣ࡝࠶࠼㔚࿶ߩ㑐ଥࠍ⴫ߒߡ޿ࠆ‫ޕ‬㜞㔚࿶஥ߢࡆ࡯ࡓ㔚ᵹ߇ᷫዋߒ
ߡ޿ࠆ߇‫ߩߎޔ‬ℂ↱ߪ‫ޔ‬㔚ᵹ߇Ⴧߔߣ㓁ᭂߣࠦ࡝ࡔ࡯࠲࡯㑆㧔EO㧕ߢࡆ࡯ࡓ߇ⓨ㑆㔚⩄ߢࠃࠅᐢ߇ࠆߚ߼ߢ޽ࠅ‫ޔ‬㒶ᭂ㔚ᵹ߇ᷫዋߒߡ޿ࠆߚ߼ߢ

[1] M. Ikeda, et al.,“․ᕈ:✢ࠍ↪޿ߚ㔚ሶ㌂ࡆ࡯ࡓߩᓸዊࠨ ࠗ ࠭ ♖ ኒ ᷹ ቯ ”,  Proceedings of the 30th Linear
Accelerator Meeting in Japan, Saga, July 20-22, 2005
[2] S. Ohsawa, et al.,“HIGH BRIGHTNESS ELECTRONGUN FOR X-RAY SOURCE”, Proceedings of PAC2005㧘
Knoxville, U.S.A., May 16-20, 2005-E-27-