exploiting the potential of the hydrostatic leveling ... · 1 iwaa 2016 edi meier + partner ag...
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1 IWAA 2016 Grenoble Edi Meier + Partner AG
www.emp-winterthur.ch
Exploiting the Potential of the Hydrostatic Leveling System (HLS)
at the Swiss Light Source (SLS)
Edi Meier Edi Meier + Partner AG Winterthur, Switzerland www.emp-winterthur.ch
Michael Boege SLS Machine Development Paul Scherrer Institute (PSI)
Villigen, Switzerland [email protected]
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2 IWAA 2016 Grenoble Edi Meier + Partner AG
www.emp-winterthur.ch
New Software for HLS at SLS
• Old HLS Software Online graphs of 1 selected sector 1 hour averages of all data were stored Output in Excel
• New HLS Software Data Output in EPICS Control System All important data are visible on one screen Online data analysis -> red / green light Rawdata, Pitch, Roll, Heave is selectable All data are stored Data playback selectable: ASCII, Excel
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3 IWAA 2016 Grenoble Edi Meier + Partner AG
www.emp-winterthur.ch
Girder Layout , total 48 Girders, 192 HLS Sensors
Zelenika et al. 2001
HLS 1 HLS
2
HLS 3
HLS 4
ca. 36 mm to watersurface
G: +/- 0.002mm grinded support
GND
V IN
V OUT G
G
G
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4 IWAA 2016 Grenoble Edi Meier + Partner AG
www.emp-winterthur.ch
Overview Screen: HEAVE N
S
E W
Heave [mm] since 2005
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5 IWAA 2016 Grenoble Edi Meier + Partner AG
www.emp-winterthur.ch
Overview Screen: PITCH & ROLL
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6 IWAA 2016 Grenoble Edi Meier + Partner AG
www.emp-winterthur.ch
Signal Monitoring Conditions
Sector 12
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7 IWAA 2016 Grenoble Edi Meier + Partner AG
www.emp-winterthur.ch
System Calibration with Filling Station
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8 IWAA 2016 Grenoble Edi Meier + Partner AG
www.emp-winterthur.ch
Online Data «Oscilloscope view»
Absolute [mm]
X
Relative [mm]
X
Rawdata [V]
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9 IWAA 2016 Grenoble Edi Meier + Partner AG
www.emp-winterthur.ch
Data output to EPICS and data storage
Amplitude at SLS: 0.016 [mm]
12[h]
• All the data are permanently available in EPICS
• History data
• Earthquake in Italy, 24.8.16
• Average of select-able interval, e.g. 1h
• Output format in ASCII or Excel
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10 IWAA 2016 Grenoble Edi Meier + Partner AG
www.emp-winterthur.ch
20 urad steps performed on the last girder
• Selection of the corresponding HLS sensors in the «History Data» window • Generation of a data output in ASCII format of the selected channels
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11 IWAA 2016 Grenoble Edi Meier + Partner AG
www.emp-winterthur.ch
Calculated from motor encoders P
itch
& R
oll [
mra
d]
Hea
ve [m
m]
0.025
0.02
0.015
0.01
0.005
0
-0.005
-0.01
-0.015
-0.02
0.002 0 -0.002 -0.004 -0.006 -0.008 -0.010 -0.012 -0.014 -0.016
08/23/2016 09:56 + time [sec] 250 300 350 400 450 500 550
Pitch.val [mrad]
Roll.val [mrad]
Heave.val [mm]
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13 IWAA 2016 Grenoble Edi Meier + Partner AG
www.emp-winterthur.ch
Comparing motor encoders and HLS Pitch most important
Pitc
h &
Rol
l [m
rad]
0.02
0.015
0.01
0.005
0
-0.005
-0.01
-0.015
-0.02
08/23/2016 09:56 + time [sec] 250 300 350 400 450 500 550
Hea
ve [m
m]
0.005 0 -0.005 -0.010 -0.015
22 +- 1 sec
Heave
Roll
Pitch HLS -3%: 19.53 urad
Encoders: 20.13 urad
Pitch.val [mrad] Roll.val [mrad]
Heave.val [mm] Pitch.hls [mrad] Roll.hls [mrad]
Heave.hls [mm] tau = 22 +- 1 sec
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14 IWAA 2016 Grenoble Edi Meier + Partner AG
www.emp-winterthur.ch
Time constant, present Digitizer 16-bit H
eave
[mm
]
-0.0005
-0.001
-0.0015
-0.002
08/23/2016 09:56 + time [sec] 280 300 320 340 360 380 400 420 440
Heave.hls [mm]
Tau = 22 +- 1 sec
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15 IWAA 2016 Grenoble Edi Meier + Partner AG
www.emp-winterthur.ch
HLS Resolution: Earthtides and Atlantic waves
Mont Terri Rocklaboratory: 24 bit Seismic Dataacquisition System „Quanterra“
0.2 microns 8 seconds
Short term signals: Atlantic waves
Long term signals: Earthtides
12 hours
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16 IWAA 2016 Grenoble Edi Meier + Partner AG
www.emp-winterthur.ch
Neighbor signals explain the heave error
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17 IWAA 2016 Grenoble Edi Meier + Partner AG
www.emp-winterthur.ch
Conclusions
• The new software opened our eyes for future applications
• We learned more about the systematic effects, liquid transport etc. in the HLS tubes
• The HLS system is well integrated with the SLS control system