geodesy - indico€¦ · new approximate coordinates for pillars - real position and orientation of...

Geodesy

Mark Jones EN/SMM-HPA

Revue Interne des Activités Survey HL-LHC 17.06.2019

Outline

EDM Long Distance Control Baseline

UR Galleries Design Azimuths

Meetings and Communications

Mark Jones EN/SMM-HPA Revue interne des activités Survey HL-LHC - Geodesy 17.06.2019 2


Analyses finished and documented

New calibration parameters inserted intoSurvey database (constant + scale factor) Mekometer (ME5000.357015) + prism (KE.3)

Scale factor now applied to measurements too

Measurements reduced with new parameters

Approximate coordinates for baseline pillars inserted in database Based on values obtained visually from GIS system

Advice on measurement conditions

Proposed modifications to CaliDist, LGC, Survey dB

Proposed new measurement module for Mekometer




Reference Pillar X Y Z H

(m) (m) (m) (m)

SURFACE.PBASE.1. 688.9084 5416.5638 2457.6246 458.6230

SURFACE.PBASE.2. 602.5000 4944.5000 2451.5446 452.3330

SURFACE.PBASE.3. 593.4624 4895.3317 2451.5634 452.3320

SURFACE.PBASE.4. 584.4539 4846.1365 2451.5808 452.3300

SURFACE.PBASE.5. 575.4487 4796.9575 2451.6048 452.3350

SURFACE.PBASE.6. 566.4436 4747.7805 2451.6194 452.3310

SURFACE.PBASE.7. 557.3758 4698.6043 2451.6376 452.3310

SURFACE.PBASE.8. 548.4314 4649.4157 2451.6545 452.3300

SURFACE.PBASE.9. 539.4221 4600.2201 2451.6830 452.3410

SURFACE.PBASE.10. 530.4157 4551.0355 2451.6980 452.3390

SURFACE.PBASE.11. 521.4099 4501.8546 2451.7107 452.3350

SURFACE.PBASE.12. 512.4052 4452.6782 2451.7249 452.3330

SURFACE.PBASE.13. 413.6094 3913.1521 2451.8867 452.3420

New approximate coordinates for pillars

- real position and orientation of baseline



New reference distances relative to PBASE.2

Reference Pillar Target Pillar Reference Distances

(m)

PBASE.2 PBASE.2 0.0000











UR Galleries design azimuth

UR galleries at Point 1 and Point 5 to be

parallel to LHC tunnel

Processing of Azimuth Data

LHC Tunnel at Point1 and Point 5

Re-establish an Azimuth Control Baseline

GP.404 GP.228

Geodetic Base (Pilier.1 Cible.2)


Reference Azimuths

Gyro-Theodolite re-calibrated by DMT

Geodetic Base reference azimuth 215.4453 Gon

Gyro ~3 mGon difference

Astronomical Azimuth determination

215.4454 Gon

DMT calibration modified

Database Calibration constant E + DE

(E = 252.6571 Gon; DE = 0.0032 Gon)


Point 1 Calculation Results


y = -8E-06x - 0.0003

y = 1E-06x - 0.0002

-0.006

-0.005

-0.004

-0.003

-0.002

-0.001

0

0.001

0.002

0.003

-250 -200 -150 -100 -50 0 50 100 150 200 250

dR

/ m

Dcum from IP / m

gyro-tda 2 pt fixes

fil+ MTI yets2017-2018L gyro + liaison

R gyro + liaison

Linear (L gyro +liaison)

-0.4 mgon

0.1 mgon

Point 5 Calculation Results


y = 1.100E-05x + 4.482E-04

y = 7.215E-07x + 3.666E-05

y = 4.3131E-06x - 2.3483E-04

-0.0025

-0.002

-0.0015

-0.001

-0.0005

0

0.0005

0.001

-400 -300 -200 -100 0 100 200 300

dR

/ m

DCum from IP / m

LSS5 La

LSS5 L

LSS5 L Low Beta

LSS5 R low beta

LSS5 R

SUDB 01.03.18

Linear (LSS5 Lall)Linear (LSS5 Rall)Linear (LSS all)

0.1 mgon

0.3 mgon

0.7 mgon

Azimuth and Bearing Relationships


g = meridian

convergence

Azimuth and Bearing Relationships


g = meridian

convergence

At P5, DgSTN ~1 mgon


CGRF and Geocentric Geodetic System

e (x) -4.67 cc

e (y) 18.25 cc

e (z) 9.91 cc

ITRF97-CGRF

rotations

Misalignment Angles

Revised Azimuth and Bearing Relationships




Parameters

handled by

LGC



N.B. a0 parameter not yet implemented!

Should be applied by hand if required

Estimated Azimuths


LSS.1Theoretical Real (LGC)

CG85 312.5177 312.5178

CG00 312.5176 312.5178

Beamline Azimuth

LSS.5Theoretical Real (LGC)

CG85 112.5354 112.5346

CG00 112.5346 112.5343

Beamline Azimuth

Meetings and Communications

Memos to SMB-SE

EDM Long Distance Control Baseline Distances

Tunnel Azimuths at LHC Interaction Points

(IP.1 and IP.5)

Engineer and Contractor Surveyors

– Point 1 & Point 5

Companies changed

Explanations of reference systems and software


To Do

Documentation

Calculations and Analyses of Reference

Network Co-ordinates

Calculations and Analyses of Reference

Azimuths Determination

Software Data Capture Modules Specifications

Gyro-Theodolite (preliminary discussions)

Mekometer


To Do

Development of new observation models ECVE (and ECSP), Tilts, HLS, WPS, FSI, DOMS

HLS can be achieved with adaptations of DVER

Tilts possible with transformation of Frames (this transformation gives lots of extra flexibility)

Both options cleaner with a new observation type

Specifications of data parameters to be managed Instruments/Sensors and Observations data

Fiducialisation and assembly data

Point and Frame Transformation parameters’ standard deviations


Conclusions

All parameters required for the HL-LHC Civil

Engineering established

Documentation to do

Software and Database modifications have been

made and/or will be required

Other modifications are proposed

New data capture modules would avoid manual

manipulation and construction of data files


Thank you for your attention


geodesy - indico€¦ · new approximate coordinates for pillars - real position and orientation of...

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