iwaa2010 - r. beunard – september 13-17, 2010 – desy, hamburg, germany 1 20m rémy beunard a....

IWAA2010 - R. BEUNARD – September 13-17, 2010 – DESY, Hamburg, Germany 1

20m

The Initial Geodetic Survey for the SPIRAL2 Process Installation at GANIL

Rémy Beunard A. Lefevre, F. Legruel

GANIL, CAEN, FRANCE

The 11th INTERNATIONAL WORKSHOP ON ACCELERATOR ALIGNMENT DESY, Germany, September 13-17, 2010


Outline

Overview about SPIRAL2 project

The Geodetic Systems

Process installation principle

Monitoring of Building Movements

Summary


PARIS

CAEN

FRANCE

Geographical location

The SPIRAL 2 project is located at the GANIL *

facility in Caen in Basse-Normandie.

*GANIL: (Large National Heavy-Ion Accelerator)

GANIL

OVERVIEW SPIRAL2 GEODETIC SYSTEMS INSTALLATION PROCESS BUILDING MOVEMENTS SUMMARY

Hamburg

FEATURE Origin7.5 orglab 7.5 permanent uncounted \


HRS+RFQ Cooler

HRS+RFQ Cooler

GANIL/SPIRAL1/SPIRAL2 facilityGANIL/SPIRAL1/SPIRAL2 facility

A/q=6 Injector option

A/q=6 Injector option

DESIR Facility low energy RIB

DESIR Facility low energy RIB

RIB Production CaveUp to 1014 fiss./sec.

RIB Production CaveUp to 1014 fiss./sec.

A/q=3 HI sourceUp to 1mA

A/q=3 HI sourceUp to 1mA

A/q=2 sourcep, d, 3,4He 5mA

A/q=2 sourcep, d, 3,4He 5mA

LINAC: 33MeV p, 40 MeV d, 14.5 A MeV HI

LINAC: 33MeV p, 40 MeV d, 14.5 A MeV HI

S3 separator spectrometer

S3 separator spectrometer

Neutrons For Science

Neutrons For Science

GANIL/SPIRAL 1 today

CIME cyclotron RIB at 1-20 AMeV

(up to 9 AMeV for fiss. fragments)

CIME cyclotron RIB at 1-20 AMeV

(up to 9 AMeV for fiss. fragments)

SPIRAL1(Production System of On-Line Accelerated Radioactive Ions) is the first facility for production and

acceleration of exotic nuclei constructed in France in 2001.

50 m ~

GANIL has been running at Caen since 1983 as a joint CEA-CNRS

facility.

The SPIRAL2 project aims at delivering high intensities of

rare isotope beams .

The SPIRAL2 project aims at delivering high intensities of

rare isotope beams .



Organization – Two construction phases

Existing GANIL facility

DESIRExp area

Phase 2start of earthworks: at the end of 2011

RIB PRODUCTION

NFS Exp area

ACCELERATOR

Conventional facilities

Phase 1start of earthworks:

at the end of this year

S3



GANIL

Phase 1Accelerator & S3,

NFS

Building 3D visualization

DESIR

Phase 2RIB

PRODUCTION

conventional facilities(electricity, water

cooling, ventilation, climatization, handling systems,……)

Process will be installed underground at level -9.50 m



Process Phase 1Cross section

25 m ~

Accelerator Process : level -9.50 m

Towards Production

Building

3D design with SolidWorks



HRS + RFQ Cooler

RIB Production

RIB to GANIL

Level : -1.75 m

RIB to DESIR

Production

Module

Beam from the accelerator

Level : -8.0 m

Building is designed to comply with all the safety constraints imposed by the high radiation activity,

Studies on the alignment are in progress

Process Phase 2



SPIRAL2 …the milestones

2007 2008 2009 2010 2011 2012 2013 2014 2015 2016

Construction of new detectors

Exp. with S3 Exp. with S3

Exp. with NFS

Construction

Phase 1 Stable ion beams from LINACCo

mm

is-

sio

nin

g

Ph

ase

1 Construction

Phase 2 Com

mis

-si

onin

g

Phas

e 2

First LINAC

Beam

Feb. 2012

TodayToday First RIB

Oct. 2013

RIB

Geodetic Measurement

Installation and Alignment process



The geodetic systems: local and national

Why two systems at GANIL ?

1- Local system

GANIL has a "local" geodetic system : used to align and position the functional components.

2- National system

A general topographic plan of the site was produced in 2003: expressed in the French national geodetic systems.

The construction plans of the SPIRAL2 project were produced on the basis of the topographic plan.



the facility.

CSS1

X = 500. 00 m

Y = 200.000 m

Z = 20.000 m

Y

XZ

25 m

CIME

The local geodetic system

CSS1

X = 100. 000 m

X = 500. 00 m

Y = 200.000 m

Z = 10. 000 m Z= 20.000 m

CSS2

X = 100. 000 m

X = 500. 000 m

Y = 229.0154 m

Z = 10. 000 m

Z = 20.000 m

« Point Croix »

X = 111. 000 m

X = 511.000 m

Y = 241.5154 m

Z = 10. 000 m

Z = 20.000 m

connection of the radioactive beam

transport line

Reference network marks

The characteristics :

Cartesian coordinate system defined by the centres of the two cyclotrons, CSS1 and CSS2. Estimated absolute

precision ±2.0 mm



Y

X

The national geodetic system Topographic plan

CSS2

CSS1

CIME

radioactive beam

transport line

Existing GANIL facility

Our constraint

…the future connection of the radioactive beam transport line

to the CIME cyclotron

geographical location of the SPIRAL2 process

The characteristics :

planimetry – the Lambert1 conical projection system

altimetry – the NGF IGN69 system

estimated absolute precision ±15 mm. 50 m



S118

S1191

S123S122

7031

7032

7033

7034

25 m

Topographic ground point (station)

New ground point outside existing installations

… Connection of the local geodetic system to the national systemN

ow, t

he p

roje

ct c

oord

inat

es

can

be e

xpre

ssed

in b

oth

geod

etic

sys

tem

s XZ

Y

Local system

XZ

YLambert 1 system

Connection consisted :

to transfer 4 points (in blue) to the outside of the installations.

on the topographic plan, 4 stations (in red) known in the national system were selected .

A change of system : Helmert transformationThis operation had 2 objectives:

"register" precisely both construction and building plans to match our local system,

simplify the installation of the process to guarantee the required connection.

Phase 2 radioactive

beam transport line



Diagram showing the Cartesian coordinates in the two systems of the process fundamental points

Linac/LHE intersectionsystem X (m) Y (m)

Lambert 1 403 428.339 171 900.345Local 445.113 31 348.231 53

Linac axis

LHE axis

50 m

XZ

Y

Local system

XZ

YLambert 1 system

Intersection Linac/LHE

system Coord. X (m) Coord. Y (m)

Lambert 1 403 428.339 171 900.345

Local 445.113 31 348.231 53

D52 magnet


Lambert 1 403 498.343 171 834.095

Local 498.323 31 267.866 69CIME cyclotron centre


Lambert 1 403 497.653 171 828.567

Local 496.400 01 262.638 39

LHE intersection / 1+ Line-Section 0


Lambert 1 403 437.022 171 862.940

Local 445.113 31 309.831 53

S3

Existing GANIL



Surface geodetic network project

Type of geodetic pillar equipped with a forced centring

1

Pillar of the Linac and LHE line axes (included in the geodetic network)

Geodetic network pillar

6

7

8

2

9

5

4

3

10

Phase 2 radioactive

beam transport line

This geodetic network had two objectives:

to provide reference points to allow installation of the process at level -9.50 m,

to monitor movements of the building at level 0.

Pillar will be anchored on at the geologically highly stable bed and isolated from the future

infrastructures and their excavations.

These pillars will remain in position throughout the lifetime of the accelerator

How to install the process geographically ?



1

3

4

2

Surface geodetic network project

Reference pillar for process installation at – 9.50 m

Phase 2 radioactive beam

transport line

Network takes into account the land occupied by the worksite, earthworks area and final layout

Pillars must be installed after the earthworks and before starting the civil engineering work for the building

Surveying for surface network will be carried out by TDA tacheometer with GPS observations

Simulation remains to be done

Final accuracy expected : ± 3.0 mm ?



The first solution which occurred to us is to transfer the beam Linac axis by optical plummet through this survey shaft.

Installation the 2nd order geodetic network

Linac axis

Pillar N°1

Pillar N°2

shaft shaft

longitudinal section of the Linac

Lev. 0.0 m

Lev. -9.50 m

Filling up layer(calcareous stone extracted

during the excavation)

This solution was rejected because of the risk of neutron scattering at level 0 due to

the difficulty to press down the calcareous stone around the shaft

Transfer of aboveground coordinates into the tunnel via plumbing


The beam line axis will be

transferred onto the concrete

slab from pillars 1 to 2


talus

talus

Sketch

Block limit

ACC 1/2-2/2

Intersection

Linac / LHE

Pillar N° 1 Lev. + 1.43 m

Lev. 0.0 m

Slope

Slab

Lev -9.50 m

Slope

Lines of sight

Lines of sight

Markers sealed in the slab

Installation principle of the process (Linac)

axes at level – 9.50 m


Pillar N° 2 Lev. + 1.43 m

Linac axis

Constraint of this solution :

This operation must be performed before the concrete slabs of the higher levels are poured (ceiling of Linac and beam transport rooms)

reference marks will be sealed in the slab at predefined positions,

their Cartesian coordinates will be determined using the geodetic pillars of the first order network.




Partial view of the topometric network of the

process at -9.50mInstallation of a floor grid reference

spaced between 3 and 5 m.


Network measurements with TDA 5005 coupled with Laser Tracker LTD 500 and digital Level Leica NA3003

Standard deviation of a point expected 0.1 mm

Reference marks sealed in the slab

Reference marks sealed againts the walls

(study is ongoing)

Viewing window installed during the making of concrete walls


Altimetric systems (m)

GANIL "local"NGF

(topographic plan)Contactor

(building plans)

GANIL

Accelerator floor +18.50 + 58.47 0.00

Experimental area floor + 18.25 + 58.22 -0.25

ACC Beam Median Plane lev 0 + 20.00 + 59.97 +1.50

ACC Beam Median Plane lev -1 + 16.75 + 56.72 -1.75

SPIRAL2

Floor lev +0.00 (ground level) +18.50 + 58.47 0.00

SPIRAL2 Beam Median Plane + 10.50 + 50.47 -8.00

Floor lev -9.50 (Linac) + 9.00 + 48.97 -9.50

Mapping between the various alltimetric systems used

Systems which will be used on the site depending on requirements



Monitoring of building movements at ground level

Lines of sight to monitor the building

Block ACC 1/2

Block ACC2/2

Block S3

Block NFS/LHE

Movements will mainly be monitored during the first five years,

Quantify the movements of each building “block”,

Measurement will be taken by polar sighting using tacheometers from pillars.



Summary

Final goal : to guarantee the future connection of the new accelerator,

The connection requires designing a “surface” network linked to the local survey,

The local system was “connected” to the national system : to express in both systems the process and construction plans requirements,

The first order network geodetic pillars will be surveyed by tacheometer TDA 5005 coupled to a differential GPS,

The surface network will be transferred to the floor accelerator tunnel, in order to define the reference network for aligning all functional components.

See poster: « Survey and Alignment Concept for the SPIRAL2 Accelerator »



Thanks for your attention!

iwaa2010 - r. beunard – september 13-17, 2010 – desy, hamburg, germany 1 20m rémy beunard a....

Documents

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ganil phase

rib production process

production building

outline slide

rmy beunard

process phase

accelerator alignment