S-band BPM at KNU 2008. 8. 27 Hyoung Suk Kim KNU.

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Presentation transcript:

S-band BPM at KNU Hyoung Suk Kim KNU

S-band BPM Left_Cap Right_Cap Center_Frame Left_Support Dipole mode

3-D Measurement for the Laser Alignment 1st meas. (mm) 2nd meas. (mm) 3rd meas. (mm) Average (mm) standard deviation (  m) a b c d e f g h a b c d e f g h reference point #1SM-BPM * designed length = 18.0 mm

Beam Pipes for the SBPM Size of the Cu beam-pipes(OFHC_C1020) to be attached to the SBPM Beam Pipe Size Quantity (ea) Usage I.D=Φ40 / O.D=Φ47, length=177mm (172.5mm) 2 SM I.D=Φ40 / O.D=Φ47, length=48mm (40.5mm) 2 I.D=Φ40 / O.D=Φ47, length=561mm (556.5mm) 2 QM I.D=Φ40 / O.D=Φ47, length=58mm (50.5mm) 2

Pre-assembled SBPM for Quadrupole Magnet SBPM for Quadrupole Magnets

SBPM for Sextupole Magnets Pre-assembled SBPM for Sextupole Magnet

RF Meas ; f (GHz) GHz slot size = 25 mm

RF Meas ; Decay Time (ns) 83 ns (average) slot size = 25 mm

Summary  Shipment schedule - #1SM S-band BPM will be sent to KEK in advance on 10 th of September. - #2SM,3QM,4QM S-band BPMs will be scheduled to be sent on around18 th of September.  Decay time (cold test) was improved from 31 ns to 83 ns in average (RF simulation (HFSS) = 99ns)  Tentative visiting schedule (KEK) to be discussed. - Sept. 15 ~ Sept. 19 (?) ; Hyoung Suk Kim - Oct. 2 ~ Oct. ?? (?) ; Hyoung Suk Kim, Aeyoung Heo