Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. 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 (J-Power) T.Itoh, K.Tada Y.Nakayama (ICEPP) S.Komamiya S.Yamashita Joint Research

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. 【 Contents of the measurement 】 ① Huddling test ② Measurement around the beam line - Natural frequency of the trestle ? - Movement and operation of instruments - 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. - Measurement Points - 30 minutes consecutive duration for 12 hours 6pm, Feb. 9, am, Feb. 10, 2004 P1J P2J P3J P4J 【 Huddling Test (1) 】 - Observation -

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. - Power Spectrum Density and Coherence - 【 Huddling Test (2) 】 Component : X ( Orthogonal to the beam line )

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. - Power Spectrum Density and Coherence - 【 Huddling Test (3) 】 Component : Y ( Parallel to the beam line )

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. - Power Spectrum Density and Coherence - 【 Huddling Test (4) 】 Component : Z ( Vertical )

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. 30 minutes consecutive duration for 28 hours 2pm, Feb. 10, 2004 – 6pm, Feb. 11, 2004 【 Measurement around the beam line (1) 】 P1J P2J P3J P4J P1J P2J P3J P4J - Measurement Points - - Observation -

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. Component : X ( Orthogonal to the beam line ) Daytime 12:00-12:30, Feb. 11, 2004 Nighttime 22:00-22:30, Feb. 10, 2004 P1J P2J P3J P4J “ Time Series in Velocity (1) “ 【 Measurement around the beam line (2) 】

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. Component : Y ( Parallel to the beam line ) P1J P2J P3J P4J “ Time Series in Velocity (2) “ 【 Measurement around the beam line (3) 】 Daytime 12:00-12:30, Feb. 11, 2004 Nighttime 22:00-22:30, Feb. 10, 2004

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. Component : Z ( Vertical ) P1J P2J P3J P4J “ Time Series in Velocity (3) “ 【 Measurement around the beam line (4) 】 Daytime 12:00-12:30, Feb. 11, 2004 Nighttime 22:00-22:30, Feb. 10, 2004

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. Component : X ( Orthogonal to the beam line ) “ Standard Deviation in Velocity (1) “ 【 Measurement around the beam line (5) 】

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. Component : Y ( Parallel to the beam line ) “ Standard Deviation in Velocity (2) “ 【 Measurement around the beam line (6) 】

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. Component : Z ( Vertical ) “ Standard Deviation in Velocity (3) “ 【 Measurement around the beam line (7) 】

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. “ Power Spectrum Density (1) “ Component : X ( Orthogonal to the beam line ) Daytime(09:00-17:00) Nighttime(19:00-03:00) 【 Measurement around the beam line (8) 】

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. Component : Y ( Parallel to the beam line ) Daytime(09:00-17:00) Nighttime(19:00-03:00) “ Power Spectrum Density (2) “ 【 Measurement around the beam line (9) 】

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. Component : Z ( Vertical ) Daytime(09:00-17:00) Nighttime(19:00-03:00) “ Power Spectrum Density (3) “ 【 Measurement around the beam line (10) 】

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. Component : X ( Orthogonal to the beam line ) Daytime(09:00-17:00) Nighttime(19:00-03:00) “ Integrated Spectrum (1) “ 【 Measurement around the beam line (11) 】

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. Component : Y ( Parallel to the beam line ) Daytime(09:00-17:00) Nighttime(19:00-03:00) “ Integrated Spectrum (2) “ 【 Measurement around the beam line (12) 】

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. Component : Z ( Vertical ) Daytime(09:00-17:00) Nighttime(19:00-03:00) “ Integrated Spectrum (3) “ 【 Measurement around the beam line (13) 】

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. “ Coherence (1) ” Daytime(09:00-17:00) Nighttime(19:00-03:00) Component : X ( Orthogonal ) Daytime(09:00-17:00) Nighttime(19:00-03:00) 【 Measurement around the beam line (14) 】

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. Daytime(09:00-17:00) Nighttime(19:00-03:00) Daytime(09:00-17:00) Nighttime(19:00-03:00) “ Coherence (2) ” Component : Y ( Parallel ) 【 Measurement around the beam line (15) 】

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. Daytime(09:00-17:00) Nighttime(19:00-03:00) Daytime(09:00-17:00) Nighttime(19:00-03:00) “ Coherence (3) ” Component : Z ( Vertical ) 【 Measurement around the beam line (16) 】

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. 【 Earthquake record (1) 】 Tsukuba Epicenter Date : 21:07, Feb. 10, 2004 ( When measuring around the beam line ) Epicenter : East of Chiba Depth of hypocenter:65km JMA Magnitude:4.2 P1J P2J P3J P4J 【 X : Orthogonal 】 【 Z : Vertical 】

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. P1J P2J P3J P4J 【 X : Orthogonal 】 【 Z : Vertical 】 Tsukuba Epicenter 【 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

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. “ Minimum and Maximum in velocity, Amplification ratio “ 〔 Earthquake 1 : 21:07, , Epicenter : East of Chiba 〕 〔 Earthquake 2 : 14:04, , Epicenter : South of Ibaraki 〕 【 Earthquake record (3) 】

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. 【 Comparison (1) 】 1) “ATF at KEK” Feb. 10, 2004 – Feb. 11, ) “D03 P.S.Bldg. at KEK” Dec. 27, 2002 – Dec. 28, ) “SPring-8” June 14, 2003 – June 15, 2003 SPring-8 ATF D3 P.S.Bldg.

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. 【 Comparison(2) 】 Component : X Nighttime(19:00-03:00) Nighttime(19:00-03:00) “ Power Spectrum Density and Integrated Spectrum “

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. 【 Comparison(3) 】 Component : Y Nighttime(19:00-03:00) Nighttime(19:00-03:00) “ Power Spectrum Density and Integrated Spectrum “

Chigasaki Research Institute J-Power / Electric Power Development Co.,Ltd. 【 Comparison(4) 】 Component : Z Nighttime(19:00-03:00) Nighttime(19:00-03:00) “ Power Spectrum Density and Integrated Spectrum “

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 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 】 The level of ground motion in the KEK is much higher than that in the SPring-8. The amplitude of the peak around 2-3Hz is almost the same between the ATF and the D3 power supply building at the KEK. There is a difference in the peak around 0.2Hz, because the observed season is different. - Comparison (KEK, SPring-8) -