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)

Study on Klystron RF Pulse Shortening andDevelopment of Waveform Diagnostic FPGA Board
Mitsuhiro Yoshida1,A), Shinichiro MichizonoA), Hiroaki KatagiriA),
Shuji MatsumotoA), Shigeki FukudaA)
A)High Energy Research Organization (KEK)
1-1 Oho, Tsukuba, Ibaraki, 305-0801
Abstract
The RF pulse shortening occurred in the X-band klystron in the KEK-XTF. During the maintenance measurement inKEKB injector linac, we also observed that the S-band klystron had a similar phenomenon. These pulse shortening
phenomena were studied with various equipments and methods. Further we developed FPGA IP and AD/DA hardware
to record such abnormal waveforms effectively.

ࠢ࡜ࠗࠬ࠻ࡠࡦߩRFᵄᒻᰳߌߩේ࿃ㅊ〔ߣᵄᒻ⸻ᢿ↪FPGAࡏ࡯࠼ߩ㐿⊒㪍㪇㪈㪇㪇㪧㫌㫃㫊㪼㩷㪪㪿㫆㫉㫋㪼㫅㫀㫅㪾㩷㪩㪸㫋㫀㫆㩷㩿㩼㪀:ࡃࡦ࠼ᄢ㔚ജ22/ࠢ࡜ࠗࠬ࠻ࡠࡦߪ࡝࠾ࠕࠦ࡜ࠗ࠳࡯↪ߩ4(Ḯߣߒߡ㐿⊒߇ㅴ߼ࠄࠇߡ޿ߚ߇‫ޔ‬㐿⊒ᒰೋࠃࠅ಴ജ4(ߩᵄᒻᰳߌ⃻⽎߇໧㗴ߦߥߞߡ޿ߚ‫ޕ‬߹ߚߎߩࠃ߁ߥ4(ᵄᒻᰳߌ⃻⽎ߪ‫ޔ‬㗫ᐲߪዋߥ޿߽ߩߩ5ࡃࡦ࠼ࠢ࡜ࠗࠬ࠻ࡠࡦߢ߽㘃ૃߥ⃻⽎߇᷹ⷰߐࠇߚ‫ߩࠄࠇߎޕ‬ᵄᒻᰳߌ⃻⽎ߩේ࿃ㅊ〔ࠍⴕ߁ߣ౒ߦ‫ߥ߁ࠃߩߎޔ‬ᵄᒻ⇣Ᏹࠍല₸⊛ߦㆬᛯߔࠆߚ߼‫ޔ‬(2)#ࠍ↪޿ߚᵄᒻ⸻ᢿ㧵㧼෸߮቟ଔߢ᳢↪ߩᄙ࠴ࡖࡦࡀ࡞㜞ㅦ#&&#ᄌ឵ࡏ࡯࠼ߩ㐿⊒ࠍⴕߞߚ‫ޕ‬ߌRF㔚ജଐሽᕈ(Ꮐ)ߣ‫࠼࡯࠰ࠞޔ‬㔚࿶/๟ᵄᢙଐሽᕈ(ฝ)ߢ޽ࠆ‫ޕ‬㪧㫌㫃㫊㪼㩷㪪㪿㫆㫉㫋㪼㫅㫀㫅㪾㩷㪩㪸㫋㫀㫆㩷㩿㩼㪀㧝㧚ߪߓ߼ߦ㪌㪇㪋㪇㪊㪇㪉㪇㪈㪇㪐㪇㪏㪇㪍㪇㪌㪇㪋㪇㪊㪇㪉㪇㪈㪇㪇㪊㪌㪋㪇㪋㪌㪧㫆㫌㫋㩷㩿㪤㪮㪀㪌㪇㪌㪌㪜㫊㪔㪍㪇㫂㪭㪃㩷㪧㫀㫅㪔㪎㪌㪮→㩷㪧㫆㫌㫋㪔㪋㪏㪤㪮㪎㪇㪇㪈㪈㪅㪊㪐㪜㫊㪔㪌㪋㫂㪭㪃㩷㪧㫀㫅㪔㪊㪇㪇㪮→㩷㪧㫆㫌㫋㪔㪋㪏㪤㪮㪈㪈㪅㪋㪈㪈㪅㪋㪈㪈㪈㪅㪋㪉㪈㪈㪅㪋㪊㪈㪈㪅㪋㪋㪈㪈㪅㪋㪌㪈㪈㪅㪋㪍㪽㩷㩿㪞㪟㫑㪀࿑㧞㧦RFᵄᒻᰳߌߩRF㔚ജଐሽᕈ(Ꮐ)෸߮
RF಴ജ48MWߩᤨߩ㔚࿶/๟ᵄᢙଐሽᕈ(ฝ)

㧞㧚:ࡃࡦ࠼ࠢ࡜ࠗࠬ࠻ࡠࡦߩ4(ᵄᒻᰳߌ:ࡃࡦ࠼ᄢ㔚ജ22/ࠢ࡜ࠗࠬ࠻ࡠࡦ=?ߢߪ/9એ਄࿑㧞߆ࠄRFᵄᒻᰳߌߩ㗫ᐲߪ‫ޔ‬಴ജRF㔚ജߦᄢߩ4(಴ജߦ߅޿ߡᷓೞߥᵄᒻᰳߌ߇⿠߈ࠆ‫ޕ‬࿑㧝ߪ߈ߊଐሽߔࠆߛߌߢߥߊ‫ޔ‬หߓRF಴ജߢ߽ࠞ࠰࡯ᱜᏱᤨߩᵄᒻ Ꮐ ߣᵄᒻᰳߌ߇⿠߈ߚ㓙 ฝ ߢ޽ࠆ‫࠼ޕ‬㔚࿶߇㜞ߊߥࠆߣ‫ޔ‬㗫ᐲ߇ᄢ᏷ߦჇ߃ࠆ੐߇ಽ
߆ߞߚ‫ߚ߹ޕ‬๟ᵄᢙଐሽᕈߪ‫࠼࡯࠰ࠞޔ‬㔚࿶ߦࠃࠅRF output (f > 12GHz)
ଐሽᕈ߽⇣ߥࠆ੐߇ಽ߆ߞߚ‫ޕ‬
2.2 㜞⺞ᵄ
Collector Current
RF output (right)

200ns

RF output (Left)࿑㧝߆ࠄಽ߆ࠆࠃ߁ߦRFᵄᒻᰳߌߣหᤨߦ㜞⺞ᵄߩ᡼಴߇⏕⹺ߐࠇߡ޿ࠆ‫ࠗ࡜࠽ࠕࡓ࡜࠻ࠢࡍࠬޕ‬ࠩ࡯ߢߎߩ㜞⺞ᵄᚑಽࠍ᷹ⷰߒߚᚲ‫ޔ‬22.4GHzߣ
32.4GHzߩᚑಽ߇޽ࠆ੐߇ಽ߆ߞߚ‫ߪࠇߎߒ߆ߒޕ‬ᵄᒻࠍ⹦⚦ߦ⷗ߡߺߚᚲ‫ޔ‬RFᵄᒻᰳߌߩ⚿ᨐߣߒߡ಴ߡ޿ࠆࠃ߁ߦ⷗ࠄࠇߚ‫ޕ‬200ns࿑㧝㧦Xࡃࡦ࠼ࠢ࡜ࠗࠬ࠻ࡠࡦߢߩRFᵄᒻᰳߌRFᵄᒻᰳߌ߇⿠߈ࠆߣࠦ࡟ࠢ࠲࡯㔚ᵹߩㅘㆊ₸2.3 㖸㗀࠮ࡦࠨ࡯߇਄߇ߞߡ޿ࠆߩ߇ಽ߆ࠆ‫ߪࠇߎޕ‬಴ജⓨᵢߩRF㔚⇇߇ήߊߥࠆߣ‫߇ࡓ࡯ࡆޔ‬ᐢ߇ࠄߕߦࠦ࡟ࠢ࠲࡯ߐࠄߦRFᵄᒻᰳߌߩේ࿃ࠍ⺞ᩏߔࠆߚ߼‫ޔ‬㖸㗀ߦ౉኿ߔࠆߚ߼ߢ޽ࠆߣ⠨߃ࠄࠇࠆ‫ߩߎޕ‬RFᵄᒻ࠮ࡦࠨ࡯ࠍࠢ࡜ࠗࠬ࠻ࡠࡦߩࡆ࡯ࡓࡄࠗࡊ๟ㄝ෸߮ᰳߌߩේ࿃ㅊⓥߩߚ߼‫ޔ‬᭽‫ߥޘ‬ᚻᲑߢ᷹ቯࠍ⹜ߺߚ‫ ޕ‬಴ജዉᵄ▤ߦขࠅઃߌߚ‫ޕ‬࿑㧟ߪ㖸㗀࠮ࡦࠨ࡯ߩ಴
2.1 RF㔚ജ/ࠞ࠰࡯࠼㔚࿶/๟ᵄᢙଐሽᕈ࿑㧞ߪ‫ޔ‬࿑㧝ߩࠃ߁ߥ಴ജᵄᒻߩ㓙ߩRFᵄᒻᰳ1ജᵄᒻߢ‫ޔ‬࿑㧟(਄)ߪࠢ࡜ࠗࠬ࠻ࡠࡦᧄ૕ߦ਄߆ࠄ
㗅ߦ࠮ࡦࠨ࡯ࠍขࠅઃߌߚ߽ߩ‫ޔ‬࿑㧟(ਅ)ߪ಴ജዉ
ᵄ▤ߦ㗅ߦขࠅઃߌߚ߽ߩߢ޽ࠅ‫ޔ‬ᏀฝߪᱜᏱᵄᒻ

E-mail: mitsuhiro.yoshida@kek.jp-308-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)

ߩ㓙(Ꮐ)‫ߣޔ‬ᵄᒻᰳߌ߇⿠߈ߚ㓙(ฝ)ߢ‫ޔ‬࿑㧝ߩᏀฝߦኻᔕߒߡ޿ࠆ‫ޕ‬
Output Cavity
Output Cavityࠗࠬ࠻ࡠࡦ /*\PU*\ᦨᄢ4(಴ജ/9 ߇Ᏹᤨㆇォਛߛ߇ =? ‫ߩߎޔ‬5ࡃࡦ࠼ࠢ࡜ࠗࠬ࠻ࡠࡦߢ
߽㘃ૃߩࡄ࡞ࠬᰳߌ⃻⽎߇⷗ߟ߆ߞߚ‫ߢߎߘޕ‬บߔߴߡߦߟ޿ߡ4(ᵄᒻᰳߌ㗫ᐲߩ⸘ᢙࠍⴕߞߚᚲ‫ޔ‬એਅߩ▎ᚲߢ4(ᵄᒻᰳߌ߇⷗ߟ߆ߞߚ‫ޕ‬⴫㧝㧦4(ᵄᒻᰳߌߩ㗫ᐲ㪬㫅㫀㫋CathodeCathodeLeft-Waveguide-30cm

Left-Waveguide-30cm

Left-Waveguide-20cm

Left-Waveguide-20cm

Left-Waveguide-10cm

Left-Waveguide-10cm

Above Output Cavity

Above Output Cavity

㪘㪄㪉
㪘㪄㪊
㪙㪄㪋
㪙㪄㪌
㪙㪄㪍
㪙㪄㪎
㪙㪄㪏
㪚㪄㪈
㪚㪄㪉
㪚㪄㪍㪚㪄㪏
㪈㪄㪊㪈㪄㪌㪉㪄㪊㪉㪄㪎
㪊㪄㪌
㪋㪄㪍
㪌㪄㪌
㪌㪄㪏

࿑㧟㧦㖸㗀࠮ࡦࠨ࡯ߩᵄᒻ‫ޕ‬ᱜᏱᤨ(Ꮐ)‫ޔ‬RFᵄᒻᰳߌᤨ(ฝ)࿑㧟߆ࠄRFᵄᒻᰳߌ߇⿠߈ߚ㓙‫ᧄޔ‬૕ߦขࠅઃ
ߌߚ㖸㗀࠮ࡦࠨ࡯ߦ㑐ߒߡߪ‫ޔ‬಴ജⓨᵢઃㄭߩ㖸㗀࠮ࡦࠨ࡯ߩᝄ᏷ߩߺ߇Ⴧടߒߡ޿ࠆߩ߇ಽ߆ࠆ‫ߐޕ‬ࠄߦߎߩ࿑㧟(ਅ)ߦኻߒߡ‫ޔ‬㖸㗀࠮ࡦࠨ࡯ߩᵄᒻߩᝄ᏷ࠍ⸘▚ߒ‫ޔ‬ᵄᒻᰳߌ߇⿠߈ߚ㓙ߩᝄ᏷߆ࠄ‫ޔ‬ᱜᏱᤨߩᝄ᏷ࠍᒁ޿ߚᵄᒻ߇࿑㧠ߢ޽ࠆ‫ޕ‬Above Output Cavity㪜㫊㪲㫂㪭㪴㪋㪈㪋㪉㪋㪉㪋㪉㪋㪉㪋㪉㪋㪉㪋㪉㪋㪉㪋㪉㪋㪉㪋㪉㪋㪉㪋㪉㪋㪉㪋㪈㪋㪈㪋㪉㪋㪉㪧㪽㩷㪲㪤㪮㪴㩿㪭㪪㪮㪩䊜䊷䉺㪀㪋㪎㪅㪊㪋㪐㪅㪎㪌㪋㪅㪎㪌㪉㪌㪋㪅㪏㪋㪈㪅㪏㪊㪎㪅㪌㪌㪊㪅㪐㪌㪎㪅㪌㪊㪌㪅㪍㪋㪇㪅㪌㪋㪋㪅㪍㪋㪇㪅㪐㪋㪌㪊㪐㪅㪊㪋㪈㪅㪉㪌㪇㪅㪉㪋㪋㪅㪉㪋㪇㪅㪍✚ㆇォᤨ㑆㩷㪲㪿㪴㪉㪇㪇㪌㪆㪍㪆㪈㩷⃻࿷㪌㪉㪃㪇㪈㪏㪐㪃㪉㪇㪏㪍㪃㪏㪊㪋㪌㪉㪃㪇㪉㪇㪌㪉㪃㪈㪉㪋㪋㪈㪃㪈㪇㪐㪋㪎㪃㪎㪇㪌㪌㪈㪃㪋㪇㪎㪌㪈㪃㪌㪈㪍㪌㪇㪃㪍㪍㪍㪌㪋㪃㪎㪊㪏㪋㪎㪃㪇㪍㪉㪉㪐㪃㪌㪉㪍㪊㪌㪃㪌㪍㪇㪉㪍㪃㪏㪏㪍㪉㪇㪃㪎㪈㪌㪉㪎㪃㪋㪋㪍㪋㪏㪃㪊㪉㪊㪉㪎㪃㪊㪇㪉ᰳ䈔ᢙ㪆㪈㪿㫆㫌㫉㪎㪅㪈㪈㪈㪅㪌㪋㪏㪅㪊㪊㪈㪅㪐㪊㪊㪅㪌㪐㪌㪅㪇㪈㪊㪅㪋㪍㪇㪅㪏㪍㪇㪅㪏㪊㪉㪅㪌㪋㪏㪅㪍㪌㪈㪅㪊㪏㪉㪅㪌㪋㪈㪅㪋㪇㪈㪅㪉㪐㪇㪅㪊㪎㪌㪅㪏㪏㪈㪅㪇㪎㪈㪅㪍㪊એ਄ߩ⚿ᨐ‫ޔ‬ㆇォߦᡰ㓚ߪή޿㗫ᐲߢߪ޽ࠆ߇‫ޔ‬
ේ࿃ߩⓥ᣿ߩᔅⷐ߇޽ࠆߚ߼‫ߩࠄࠇߎޔ‬ਛߢ․ߦ
RFᵄᒻᰳߌߩ㗫ᐲ߇㜞ߊ‫ࠢ࡯ࠕߦࠄߐޔ‬ㇱߢࡆ࡯ࡓࡠࠬߦߟߥ߇ࠆB-7ࠢ࡜ࠗࠬ࠻ࡠࡦࠍ੤឵ߒ‫ޔ‬੤឵ߒߚࠢ࡜ࠗࠬ࠻ࡠࡦࠍ࠹ࠬ࠻ࠬ࠲ࡦ࠼ߦⵝ⌕ߒߡ‫ޔ‬⹦⚦ߥ⹜㛎ࠍⴕߞߚ‫ޕ‬એਅ߇ߘߩ⚿ᨐߢ޽ࠆ‫ޕ‬

Left-Waveguide-10cm
Left-Waveguide-20cm

3.1 RF㔚ജ/ࠞ࠰࡯࠼㔚࿶/๟ᵄᢙଐሽᕈ
Left-Waveguide-30cm

࿑㧡ߪࠞ࠰࡯࠼㔚࿶ࠍᄌ߃ࠆߣ౒ߦ‫ޔ‬4(౉ജࠍ⛉ߞߡฦࠞ࠰࡯࠼㔚࿶ߦኻߒߡ಴ജ4(㔚ജࠍᄌ߃ߚ㓙ߩ㧾㧲ᵄᒻᰳߌߩ㗫ᐲࠍࡊࡠ࠶࠻ߒߚ߽ߩߢ޽ࠆ‫ޕ‬Time [s]࿑㧠㧦㖸㗀࠮ࡦࠨ࡯ߩᝄ᏷⸃ᨆᓟߩᵄᒻ㪋㪌㪅㪋㪤㪮࿑㧠߆ࠄ㖸ᵄ߇ዉᵄ▤ߦᴪߞߡ಴ജዉᵄ▤߆ࠄ㗅ߦવ᠞ߒߡ޿ࠆߩ߇ߪߞ߈ࠅಽ߆ࠅ‫ޔ‬RFᵄᒻᰳߌ߇⿠߈ߚ㓙‫ޔ‬᡼㔚㖸߇಴ജⓨᵢઃㄭ߆ࠄ಴ߡ޿ࠆ੐
߇⏕ታߣߥߞߚ‫ޕ‬㪋㪊㪅㪏㪤㪮㪚㫆㫌㫅㫋㩿㫇㫌㫃㫊㪼㪆㪿㪀㪈㪍㪋㪈㪅㪏㪤㪮㪊㪐㪅㪋㪤㪮㪈㪋㪈㪉

2.4 Xࡃࡦ࠼RFᵄᒻᰳߌߦ㑐ߔࠆኻ╷෸੍߮ቯ㪊㪍㪅㪏㪤㪮㪈㪇ߎࠇ߹ߢߩᵄᒻᰳߌߩ⺞ᩏߦࠃࠅ಴ജⓨᵢઃㄭߢߩ᡼㔚ߩ⇼޿߇޽ࠆߚ߼‫ޔ‬಴ജⓨᵢࠍ࠰࡟ࡁࠗ࠼ࠢ
࡜ࠗࠬ࠻ࡠࡦߢᵄᒻᰳߌߩ⿠߈ߥ߆ߞߚ⸳⸘ߩ߽ߩ
ߦᄌᦝߒ‫ߦࠄߐޔ‬಴ജዉᵄ▤ߣߩ⚿วሹߩⷺࠍਣ߼
ࠆ╬ߩᡷༀࠍⴕߞߚ㧢ภᯏࠍ⵾ㅧߒߚ‫⃻ޕ‬࿷ߎߩ㧢ภᯏߩ⹜㛎ਛߢ޽ࠆ‫ޕ‬㪊㪋㪅㪇㪤㪮

㪏㪊㪈㪅㪈㪤㪮

㪍㪋㪉㪏㪅㪉㪤㪮

㪊㪋㪅㪇㩷㪇㪈㪈㪅㪇㪤㪮

㪊㪉㪈㪊㪅㪍㪤㪮

㪉㪉㪅㪇㪤㪮

㪊㪋㪉㪌㪅㪇㪤㪮

㧟㧚Sࡃࡦ࠼ࠢ࡜ࠗࠬ࠻ࡠࡦߩRFᵄᒻᰳߌ㔚ሶ㓁㔚ሶ౉኿ེߦߪบߩ5ࡃࡦ࠼ᄢ㔚ജࠢ࡜-309-㪋㪊㪅㪏㩷㪊㪐㪅㪋㩷㪉㪉㪏㪅㪉㩷㪊㪍㪉㪉㪅㪇㩷㪊㪏㪋㪇㪜㫊㩷㩿㫂㪭㪀㪋㪉㪈㪈㪅㪇㩷㪋㪋࿑㧡4(㔚ജࠞ࠰࡯࠼㔚࿶ଐሽᕈ㪧㪽㩷㩿㪤㪮㪀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)

ߎࠇ߆ࠄ:ࡃࡦ࠼ࠢ࡜ࠗࠬ࠻ࡠࡦߩᤨߣห᭽ߦ‫ޔ‬4(ᵄᒻᰳߌߩ㗫ᐲߪ‫ޔ‬4(಴ജ㔚ജ߳ߩଐሽᕈ߇ᄢ߈޿߇‫ޔ‬หߓ4(಴ജ㔚ജߢ߽ࠞ࠰࡯࠼㔚࿶ࠍ਄ߍࠆߣჇടߔࠆ੐߇ಽ߆ࠆ‫ޕ‬
3.2 ࠪࡦ࠴࡟࡯࡚ࠪࡦࡈࠔࠗࡃ࡯ߐࠄߦ㔚ሶࡆ࡯ࡓߩ⁁ᘒࠍ್ᢿߔࠆߚ߼ࠪࡦ࠴࡟࡯࡚ࠪࡦࡈࠔࠗࡃ࡯ࠍࠢ࡜ࠗࠬ࠻ࡠࡦߩࡏ࠺ࠖ࡯ߣࠦ࡟ࠢ࠲࡯ߦᏎ߈ߟߌߚ‫ޕ‬࿑㧢 ฝ ߪࠪࡦ࠴࡟࡯࡚ࠪࡦࡈࠔࠗࡃ࡯ߩ಴ജାภߢ޽ࠅ‫ޔ‬4(ᵄᒻᰳߌ߇⿠߈ߚᓟߢߪࠢ࡜ࠗࠬ࠻ࡠࡦࡏ࠺ࠖ࡯ߢߩ㔚ሶࡆ࡯ࡓߩ៊ᄬߪዋߥߊߥࠅ‫࡯࠲ࠢ࡟ࠦޔ‬஥ߢߪ࠳ࠗࠝ࡯࠼ㆇォߩᤨߣหߓ࡟ࡌ࡞ߦߥࠆ߇‫ᤨޔ‬㑆⊛ߥᝄേ߇ᬌ಴ߐࠇߚ‫ߩࠄࠇߎޕ‬੐߆ࠄ4(ᰳߌ߇⿠߈ࠆߣታ㓙ߦ಴ജⓨᵢߦߪ4(ߩ⫾Ⓧࠛࡀ࡞ࠡ࡯߇ήߊߥࠅ‫߆ޔ‬ߟࡃࡦ࠴ߩ⁁ᘒ߇ਇ቟ቯߢ޽ࠆߣផ᷹ߢ߈ࠆ‫ޕ‬
BodyRF಴ജ

Collector

1㱘S1㱘S࿑㧢㧦ࠪࡦ࠴࡟࡯࡚ࠪࡦࡈࠔࠗࡃ࡯ߩᵄᒻ
3.3 Sࡃࡦ࠼ࠢ࡜ࠗࠬ࠻ࡠࡦᵄᒻᰳߌߩ߹ߣ߼5ࡃࡦ࠼ࠢ࡜ࠗࠬ࠻ࡠࡦߢߩᵄᒻᰳߌߩ㗫ᐲߪᄙ޿ᚲߢ߽ࡄ࡞ࠬᤨ㑆એਅߢ޽ࠆߚ߼‫ޔ‬ታ⾰⊛ߥㆇォߢߪ໧㗴ߦߥࠄߥ޿‫ࠬ࡞ࡄߩߎޕ‬ᰳߌ߇⚻ᐕᄌൻߦࠃࠆ߽ߩߥߩ߆ߥߤ‫੹ޔ‬ᓟ⺞ᩏࠍ⛮⛯ߔࠆ੍ቯߢ޽ࠆ‫ޕ‬㧠㧚ᵄᒻ⸻ᢿIP਄⸥ߩࠃ߁ߥ⇣Ᏹᵄᒻࠍಽ೎෸߮⸘ᢙߔࠆߩߪࠝࠪࡠࠬࠦ࡯ࡊන૕ߢߪ㔍ߒ޿‫(߼ߚߩߘޕ‬2)#਄ߩ+2 +PVGNNGEVWCN2TQRGTV[ ߢᵄᒻࠍ࠺ࠫ࠲࡞ାภಣℂߒߡ⇣Ᏹᵄᒻߩᬌ಴ࠍⴕ޿‫࠻ߦࡓࠗ࠲࡞ࠕ࡝ޔ‬࡝ ࠟ ࡯ ࠍ ಴ ജ ߒ ߚ ‫ ߩ ߎ ޕ‬㓙 #&&#ᄌ឵෸߮(2)#ߩ
ࡂ࡯࠼࠙ࠚࠕߣߒߡߪ‫੹ޔ‬࿁ߪᣢ⵾ຠߢ޽ࠆ:KNKPZ␠ߩ:VTGOG&52ࡏ࡯࠼ࠍ೑↪ߒߚ‫ޕ‬࿑㧣 Ꮐ ߪᵄᒻ⸻ᢿ↪ߩ+2ߩࡉࡠ࠶ࠢ࿑ߢ޽ࠆ‫ޕ‬ADC

Ch2ADCᵄᒻ⇣Ᏹ䊃䊥䉧䊷DAC

NTSCDAC㧡㧚ᵄᒻ⸻ᢿ↪᳢↪FPGAࡏ࡯࠼ߩ㐿⊒ࠢ࡜ࠗࠬ࠻ࡠࡦߢ⇣Ᏹ߇⿠߈ߚ㓙‫ߩࠇߙࠇߘޔ‬಴ജାภߩ⋧㑐㑐ଥࠍ⷗ࠆߚ߼ߦߪ‫߈ߴߔ࡯࠲࠾ࡕޔ‬ାภ߇㕖Ᏹߦᄙᢙ޽ࠆ‫ߦ․ޕ‬:ࡃࡦ࠼ࠢ࡜ࠗࠬ࠻ࡠࡦߢߪ‫ޔ‬Ᏹߦࡕ࠾࠲࡯ߒߡ߅ߊߴ߈㜞ㅦାภߛߌߢ߽‫࠼࡯࠰ࠞޔ‬㔚࿶‫ޔ‬㔚ᵹ‫࡯࠲ࠢ࡟ࠦޔ‬㔚ᵹ‫ޔ‬4(౉ജ‫ޔ‬4(಴ജㅘㆊ‫ޔ‬෻኿ߩߘࠇߙࠇฝ‫ޔ‬Ꮐ‫ޔ‬4(⓹ߩࡈࠜ࠻ࡑ࡞ฝ‫ޔ‬ᏀߣEJ޽ࠆ‫ߦࠄߐޕ‬㖸㗀࠮ࡦࠨ࡯‫ࡦࠪޔ‬࠴࡟࡯࡚ࠪࡦࡈࠔࠗࡃ࡯╬ࠍㅊടߔࠆߣEJએ਄߇ᔅⷐߦߥࠆ‫ޕ‬਄⸥ߩᵄᒻᰳߌ⺞ᩏߢߪᵄᒻ⇣Ᏹ࠻࡝ࠟ࡯ࠍⶄᢙߩࠝࠪࡠࠬࠦ࡯ࡊߦ౉ജߒ࠺࡯࠲ࠍ෼㓸ߒߚ߇‫ߪࡊ࡯ࠦࠬࡠࠪࠝޔ‬㜞㗵ߥ਄࠺࡯࠲෼㓸ߩㅦᐲ߽ㆃߊ࡝ࠕ࡞࠲ࠗࡓߢߩାภಣℂߪਇน⢻ߢ޽ࠆ‫ޕ‬ߘߎߢ੹ᓟߩߎߩࠃ߁ߥᵄᒻ⸻ᢿࠍኈᤃߦߔࠆߚ߼᳢↪ߩ(2)##&&#ࡏ࡯࠼ߩ㐿⊒ࠍⴕߞߚ‫ޕ‬㐿⊒ߒߚࡏ࡯࠼ߩ઀᭽ߪ⴫㧞ߩㅢࠅߢ޽ࠅ‫ޔ‬ᭂജ቟ଔߥㇱຠࠍ૶↪ߒߚߚ߼ଔᩰߪ㧝㧜ਁ౞⒟ᐲߢ޽ࠆ‫ޕ‬⴫㧞㧦(2)##&&#.8&5ࡏ࡯࠼ߩ઀᭽(2)#
:KNKPZ5RCTVCP:%5#&#PCNQI&GXKEGU#& DKV/5U 
EJ
QT#& DKV/5U &#EJ #PCNQI&GXKEGU#& DKV/5U.8&5ZEJ .8.8 /DRU 㧢㧚߹ߣ߼ߎࠇ߹ߢߩࠢ࡜ࠗࠬ࠻ࡠࡦߩ಴ജ4(ᵄᒻᰳߌߩ⺞ᩏߦࠃࠅ‫ޔ‬ේ࿃߇಴ജⓨᵢઃㄭߦ޽ࠆߎߣ߇ಽ߆ߞߡ߈ߚ‫ߩ੹ޕ‬ᚲ᳿ቯ⊛ߥ⚿⺰ߦ߹ߢߪ⥋ߞߡ޿ߥ޿߇‫ޔ‬಴ജⓨᵢ๟ࠅߩ⏛႐߿ࡆ࡯ࡓ゠㆏╬ߦߟ޿ߡ޿ߊߟ߆ߩ઒⺑߇┙ߡࠄࠇߚ‫ޕ‬ࠢ࡜ࠗࠬ࠻ࡠࡦߩࠃ߁ߥ⌀ⓨ▤ߪቢᚑߒߡߒ߹߁ߣౝㇱߩࡆ࡯ࡓߦ㑐ߔࠆᖱႎ߇ᭂ┵ߦዋߥߊ‫⇣ޔ‬Ᏹ߇⿠߈ߚ㓙ߩේ࿃ㅊ෸߇㕖Ᏹߦ㔍ߒ޿‫߼ߚߩߘޕ‬᭽‫ࠍ࡯ࠨࡦ࠮ߥޘ‬ขࠅઃߌࠆ੐߇ᔅⷐߢ޽ࠅ‫ߚ߹ޔ‬ߘࠇࠄߩାภࠍല₸⊛ߦㆬ೎ߔࠆߚ߼ߦᵄᒻ⸻ᢿ↪
ߩ࿁〝߇㊀ⷐߢ޽ࠆ‫ޕ‬ෳ⠨ᢥ₂

FPGA
Ch1

߹ߚ065%+2ࠍ㐿⊒ߒ‫ޔ‬࿑㧣 ฝ ߩࠃ߁ߦ㨀㨂਄ߦ⃻࿷ߩᵄᒻߣ৻ߟ೨ߩ⇣Ᏹᵄᒻࠍ⴫␜ߔࠆߣ౒ߦ‫ޔ‬ᵄᒻ⇣Ᏹߩ⸘ᢙࠍ⴫␜ߒߡ޿ࠆ‫(ߦࠄߐޕ‬2)#ࡏ࡯࠼
߆ࠄߩ࠻࡝ࠟ࡯ࠍࠝࠪࡠࠬࠦ࡯ࡊߩᄖㇱ࠻࡝ࠟ࡯ߣߒߡ౉ജߒ‫ޔ‬R[VJQPYKP6GM8+5#ߢᵄᒻࠍ෼㓸ߒߚ‫ޕ‬ᐔဋᵄᒻ[1] S. Matsumoto, et al., “Development of PPM-focused Xband pulse klystron” Proceedings of the 2nd Annual
Meeting of Particle Accelerator Society of Japan, Saga,Japan, Jul. 20-22, 2005
[2] I. Sato, et al., “Design Report on PF Injector Linac
Upgrade for KEKB”, KEK Report 95-18, Mar., 1996Ꮕಽᐔဋᵄᒻ㼺S/S = 1/16ᐔဋᵄᒻ䊌䊦䉴ᰳ䈔S㼺SᏅಽᵄᒻ࿑㧣㧦ᵄᒻ⸻ᢿ+2ߩࡉࡠ࠶ࠢ࿑ Ꮐ ߣᶧ᥏㨀㨂਄ߩᵄᒻߣࠞ࠙ࡦ࠻ ฝ -310-