Beam%20Position%20Monitor%20system%20for%20Super%20KEKB

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Beam Position Monitor system for Super KEKB

• KEKB Monitor Group
• M.Tejima

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????????????

• ???????????????????????????????
• ??????????(????????????? 3?4?)
• ?????????????????????????????
• ?????????????????????????????????SMA???????

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(No Transcript)
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Super-KEKB????????????

• ??????
• 2.6A ---gt 9.4A
• ???????????2.6A???????????????????????????????????
  
• ?
• ??????????????
• 12mm--gt6mm
• ????????????????????KEKB??????
• ?
• ???????????
• 1/4
• ???????????4????????KEKB????

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?????????????(1)KEKB-LERbpm???

• ChamberD94mm
• ButtonD12mm
• BunchL5mm
• BunchN5000
• TotalCur.2.6A
• Eta.041
• Total Power0.8Watt

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?????????????(2)SKEKB-LERbpm???

• ChamberD94mm
• ButtonD6mm
• BunchL3mm
• BunchN5000
• TotalCur.9.4A
• Eta.02
• TotalPower1.2Watt

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?????????????(3)KEKB-OCTOPOS???

• ChamberD52mm
• ButtonD6mm
• BunchL5mm
• BunchN5000
• BunchS1bucket
• TotalCu2.6A
• Eta.037
• Cable100m
• Capacitance2.0E-12
• Beam??(8, 0)??
• ??????????
• Total Power1.5watt

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Total PowerWatt
Button electrode Cable Loss Electronics
KEKB(LER) Beam 2.6A 0.798watt 0.789watt 0.009watt
Super-KEKB (LER f6mm) Beam 9.4A 1.17watt 1.16watt 0.009watt
Super-KEKB (LER f12mm) Beam 9.4A 15.7watt 15.67watt 0.029watt
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Power at 1GHz to Electronics100m cable (200m
cable)
Beam 20mA 30mA 2.6A(KEKB) 9.4A(SKEKB)
KEKB -39.0 dBm (-49.0) -27.0dBm (-37.0) 3.5dBm (-6.5)
Super KEKB -51.1dBm (-61.1) -39.1dBm (-49.1) 2.3dBm (-7.7)
Optics correction ? 80mA?? 508MHz???????dB??Power?
????
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One-Pass detector
Super KEKB?????? ?? 12mm ----gt
6mm ??????1/4(-12dB)? ????????? KEKB 0.3nC ?
SKEKB 1.2nC 10nC ?1mA/bunch
KEKB ?super KEKB????
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BPM?????????

• ??? 12mm --gt 6mm
• ?????????SMA????male-type
• ??OCTOPOS??????????
• ????????????????????
• Skew Q bpm???
• ????????????
• ?????????
• ??????????????(???????)
• Beam mapping???Gain?????
• ?????????????
• BPM??????COD?????(BBA?????????????????)

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OCTOPOS bpmSuper KEKB

• ChamberD52mm
• ButtonD3mm
• BunchL3mm
• BunchN5000
• BunchS1Bucket
• TotalCu9.4A
• Eta.018
• Cable100m
• Capacitance2.0E-12
• Beam??(8, 0)??
• ??????????
• Total Power2.34watt
• ???? 3mm??

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????

• 4???????
• 5D??????????
• ???????????
• ????????????
• Female????????????????????
• PEEK?????????KEKB??????
• ????????????????????

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?????????

• ?????
• ????????????????
• ????1?????
• VXI main frame???????????????
• VXI-MXI-1?VME-MXI -1?????
• ????????
• VXI-MXI-2?VME-MXI -2?????
• ???????1????(6?)
• Up-convertor(508--gt1017MHz) for Ante-chamber
• 230?

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BPM??

• ????????
• BPM????????????????????
• Spring-8??20Hz??200Hz ,???????
• ??????????????????
• BPM?????????(X,Y)????????
• ??????????????????Gap ??????????
• ????????????????????

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?????

• ?????BPM
• ???? 508/1017MHz
• ???? 30mA??
• ??? ?mm??
• ??? 20mm??
• ???? 100mm??
• ???? 4 ???
• ???? Multi-bunch

• ????BPM
• ????? 250MHz
• ???? 0.128?mA/bunch
• ??? 0.1?0.5mm
• ???? Turn by Turn
• ???? Single bunch

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?????

• SMA???????Mode???????
• ????????????
• VXI??????????????
• 508MHz???????????????
• e/p????????????(?? 0. 1deg)
• OCTOPOS???????