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Ground Motion Measurement in Accelerator Test Facility at KEK. ・KEK ・ICEPP ( Univ . of Tokyo ) ・J-Power. Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. 【 Research Team and Members】. ( KEK).
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Ground Motion Measurement in Accelerator Test Facility at KEK ・KEK ・ICEPP (Univ. of Tokyo) ・J-Power Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
【Research Team and Members】 (KEK) R.Sugahara, S.Takeda, M.Yoshioka, H.Yamaoka Joint Research (ICEPP) (J-Power) T.Itoh, K.Tada Y.Nakayama S.Komamiya S.Yamashita Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
【Contents of the measurement】 ①Huddling test ②Measurement around the beam line - Movement and operation of instruments - Natural frequency of the trestle ? • Ground Motion in • Accelerator Test Facility ? Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
【Measurement Instrument】 - Servo type velocity meter “VSE355G2” - (manufactured by Tokyo Sokushin Co.,Ltd.) - Specification - Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
【Huddling Test (1)】 - Measurement Points - P4J P3J P1J P2J - Observation - 6pm, Feb. 9, 2004 - 6am,Feb. 10, 2004 30 minutes consecutive duration for 12 hours Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
【Huddling Test (2)】 - Power Spectrum Density and Coherence - Component : X ( Orthogonal to the beam line ) Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
【Huddling Test (3)】 - Power Spectrum Density and Coherence - Component : Y ( Parallel to the beam line ) Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
【Huddling Test (4)】 - Power Spectrum Density and Coherence - Component : Z ( Vertical ) Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
P1J P4J P1J P4J P2J P2J P3J P3J 【Measurement around the beam line (1)】 - Measurement Points - - Observation - 2pm, Feb. 10, 2004 – 6pm, Feb. 11, 2004 30 minutes consecutive duration for 28 hours Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
P1J P2J P3J P4J 【Measurement around the beam line (2)】 “ Time Series in Velocity (1) “ Component : X ( Orthogonal to the beam line ) Nighttime 22:00-22:30, Feb. 10, 2004 Daytime 12:00-12:30, Feb. 11, 2004 Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
P1J P2J P3J P4J 【Measurement around the beam line (3)】 “ Time Series in Velocity (2) “ Component : Y ( Parallel to the beam line ) Nighttime 22:00-22:30, Feb. 10, 2004 Daytime 12:00-12:30, Feb. 11, 2004 Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
P1J P2J P3J P4J 【Measurement around the beam line (4)】 “ Time Series in Velocity (3) “ Component : Z ( Vertical ) Nighttime 22:00-22:30, Feb. 10, 2004 Daytime 12:00-12:30, Feb. 11, 2004 Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
“ Standard Deviation in Velocity (1) “ Component : X ( Orthogonal to the beam line ) 【Measurement around the beam line (5)】 Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
“ Standard Deviation in Velocity (2) “ Component : Y ( Parallel to the beam line ) 【Measurement around the beam line (6)】 Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
“ Standard Deviation in Velocity (3) “ Component : Z ( Vertical ) 【Measurement around the beam line (7)】 Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
Daytime (09:00-17:00) Nighttime (19:00-03:00) 【Measurement around the beam line (8)】 “ Power Spectrum Density (1) “ Component : X ( Orthogonal to the beam line ) Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
Daytime (09:00-17:00) Nighttime (19:00-03:00) 【Measurement around the beam line (9)】 “ Power Spectrum Density (2) “ Component : Y ( Parallel to the beam line ) Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
Daytime (09:00-17:00) Nighttime (19:00-03:00) 【Measurement around the beam line (10)】 “ Power Spectrum Density (3) “ Component : Z ( Vertical ) Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
Daytime (09:00-17:00) Nighttime (19:00-03:00) 【Measurement around the beam line (11)】 “ Integrated Spectrum (1) “ Component : X ( Orthogonal to the beam line ) Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
Daytime (09:00-17:00) Nighttime (19:00-03:00) 【Measurement around the beam line (12)】 “ Integrated Spectrum (2) “ Component : Y ( Parallel to the beam line ) Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
Daytime (09:00-17:00) Nighttime (19:00-03:00) 【Measurement around the beam line (13)】 “ Integrated Spectrum (3) “ Component : Z ( Vertical ) Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
【Measurement around the beam line (14)】 “ Coherence (1) ” Component : X ( Orthogonal) Daytime (09:00-17:00) Nighttime (19:00-03:00) Daytime (09:00-17:00) Nighttime (19:00-03:00) Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
【Measurement around the beam line (15)】 “ Coherence (2) ” Component : Y ( Parallel ) Daytime (09:00-17:00) Nighttime (19:00-03:00) Daytime (09:00-17:00) Nighttime (19:00-03:00) Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
【Measurement around the beam line (16)】 “ Coherence (3) ” Component : Z ( Vertical ) Daytime (09:00-17:00) Nighttime (19:00-03:00) Daytime (09:00-17:00) Nighttime (19:00-03:00) Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
Tsukuba Epicenter 【Earthquake record (1)】 Date : 21:07, Feb. 10, 2004 ( When measuring around the beam line ) Epicenter : East of Chiba Depth of hypocenter:65km JMA Magnitude:4.2 【 Z : Vertical 】 【 X : Orthogonal 】 P1J P2J P3J P4J Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
Epicenter Tsukuba 【Earthquake record (2)】 Date :14:04, Feb. 11, 2004 ( When measuring around the beam line ) Epicenter :South of Ibaraki Depth of hypocenter:70km JMA Magnitude:3.7 【 Z : Vertical 】 【 X : Orthogonal 】 P1J P2J P3J P4J Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
【Earthquake record (3)】 “ Minimum and Maximum in velocity, Amplification ratio “ 〔Earthquake 1 : 21:07, 2004.2.10 , Epicenter : East of Chiba〕 〔Earthquake 2 : 14:04, 2004.2.11 , Epicenter : South of Ibaraki〕 Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
【Comparison (1)】 1) “ATF at KEK” Feb. 10, 2004 – Feb. 11, 2004 2) “D03 P.S.Bldg. at KEK” Dec. 27, 2002 – Dec. 28, 2002 3) “SPring-8” June 14, 2003 – June 15, 2003 D3 P.S.Bldg. SPring-8 ATF Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
【Comparison(2)】 Component : X “Power Spectrum Density and Integrated Spectrum “ Nighttime (19:00-03:00) Nighttime (19:00-03:00) Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
【Comparison(3)】 Component : Y “Power Spectrum Density and Integrated Spectrum “ Nighttime (19:00-03:00) Nighttime (19:00-03:00) Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
【Comparison(4)】 Component : Z “Power Spectrum Density and Integrated Spectrum “ Nighttime (19:00-03:00) Nighttime (19:00-03:00) Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
【Summary】 - ATF at KEK - • The peak around 0.2Hz and 3Hz is observed in all • measurement points. • Horizontal natural frequency of the trestle in ATF • is thought to be around 10 - 12 Hz. • As the peak excited only P1J can’t be observed, • vertical natural frequency of the trestle in ATF is • not clear. • In the P1J (the measurement point on the trestle), • the vibration is amplified during the earthquake. Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.
【Summary】 - Comparison (KEK, SPring-8) - • The level of ground motion in the KEK ismuch • higher than that in the SPring-8. • The amplitude of the peak around 2-3Hz is almost • the same betweenthe ATFand the D3 power supply • building at the KEK. • There is a difference in the peak around 0.2Hz, • because the observed season is different. Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd.