Concept Development Status Patrick Bestmann CERN BEABPSU IWAA2010 14092010 Remote Controlled Measurements in the LHC Overview Remanent dose rate map between D4 and Q5 after 180 days of continious operation with one month of cooling time ID: 242328
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Slide1
LHC Collimator Survey Train
Concept / Development / Status
Patrick BestmannCERN BE/ABP/SU
IWAA2010 14/09/2010
Remote Controlled Measurements in the LHCSlide2
OverviewSlide3
Remanent dose rate map between D4 and Q5 after 180 days of continious operation with one month of cooling time
MotivationSlide4
Significant activation of material by the beam cleaning process in Point 3 and 7
High Dose rates for peronnel in Place (4mSv/h)500m of Beamline concerned at Point 7
26 Quadrupoles and 37 CollimatorsConventional
measurements ~90hControl of the Collimator Alignment
using
a remote controlled system
MotivationSlide5
Task definition
Control of the collimator alignment in vertical and horizontal direction
Relative to the neigbouring quadrupoles
Requested precision 0.2 mm
Respecting the ALARA principle (As Low As Reasonably Achievable)Slide6
How to bring
the
equipment in place?
Train based on the modular TIM concept
Train
for
visual
inspections
Traction
Module
Battery
Module
Sensor Module
Control
Module
The
train
is controlled either by the user Interface or the measurement program
„TIM“ Train Inspection MonorailSlide7
„TIM“ Train Inspection
Monorail
Sensor
unit
Control
unit
Battery
unit
Traction
unitSlide8
Digital
close
range photogrammetry
Fast
and
non
contact
measurement
of
the
activated
collimators
Wire
offset
measurements
to detect train position and link the different aquisition volumes.Reliable straight
reference over long
distances
Precise
model
for
the
wire
sag
is needed
Concept
Quad
Quad
CollimatorsSlide9
Concept
Cameras
Targets
Wire Sensor
Collimator
Quad
QuadSlide10
Inclination sensor
Targets
External lights
Reference Pin
Wire
ConceptSlide11
Tunnel Installation
5 overlapping wires
10 pillars
2x 111 m
2x 85 m
1x 146 mSlide12
AEROEL XLS35-XY laser micrometer as wire measurement system
Open sensor configuration
Large field of view 35mmCommercial on the marketAICON MoveInspect HR Photogrammetric system
WYLER Zerotronic Inclination Sensors
SensorsSlide13
Optical Laser MicrometerMeasurement of
dark/light
transistionsRelative position
of 2 wires to
the
reference
pin
200Hz
aquisition
frequency
Linearity
of
±2.5µm
Repeatability
of
±2µm
XLS-35 MicrometerSlide14
Photogrammetric System
Move
Inspect
HR
Commercial Photogrammetric system AICON MoveInspect HR
4
AVT Marlin F-201B Cameras in industrial housing
Syncbox
Calibration Panel
MoveInspect HR software
Custom modificationsSlide15
Single
shot
synchronised aquisition
Automatic image measurement and calculations
We obtain a set of 3D coordinates with identified point groups for collimator
and
wire
sensor
systems
No
simultaneous
calibration
;
adjusted
intersections
Photogrammetric SystemSlide16
Targets
Retro targets are sensitive to radiation
Use of non retro targets
Production of special aluminium targetswhole body made of black matt aluminium
with light grey aluminium insertSlide17
Calculations
3 different coordiante systems
Left arm with measured wire
Right arm with measured wirePhotogrammetric system with arms and collimator
7P transformations of the arm systems into the
photo
system
Axis alignment to the wire using 3 translations and 2 rotations
Rotation of the y axis (wire axis) using the measured inclination of the two armsSlide18
Systems
Camera System
Arm SystemSlide19
Results
are 3D coodinates
for each collimator and
quadrupole
in following coordinate system:
Aligned with the inclined wire
Z axis in a vertical plane
Generating LGC++ file
using the x coordinates as horizontal offsets
using the z coordinates as vertical distances (reduced by the slope and the wire sag)
Online LGC++ calculation and comparison with theoretical valuesSlide20
Operation
Autonomous
system after the
startup procedure
Startup;
Calibration
;
Sequence
definition
Controlled
by
the
LabView
Software
Sequencer
running
on the trainRemote Panel informing the operatorSlide21
Status
Sensorsystems are running
All Subroutines are running
Tunnelinstallation completed
Finalising
Software
Finalising
Hardware
configuration
Tests.....