Next planned test steps on two beam prototype modules
description
Transcript of Next planned test steps on two beam prototype modules
Next planned test steps on two beam prototype modules
07-02-11 H. MAINAUD DURAND
With input from Michail Anastasopoulos, Nicolas Chritin, Sylvain Griffet, Juha Kemppinen, Raphaël Leuxe, Mateusz Sosin
Special thanks to Serge Lebet and Philippe De Souza
2
Two beam prototype modules
Validation of the following strategies [Q1 - Q3 2011]
o Pre-alignment of the components on their support within 10 microns, inter-comparison between methods (AT 401, micro-triangulation,…)
o Articulation point : the adjacent extremities of girders follow within a few microns
o Micrometric adjustment using linear actuators
Alignment systems providing a determination of the position with micrometric accuracy and precision [Q2 - Q4 2011]
o Inter-comparison between oWPS and cWPS
o Inter-comparison between RASNIK and WPS [Q3 - Q4 2011]
Active pre-alignment: tests of the algorithms [Q2 2011]
Feedback concerning schedule, cost, general strategy of installation, and two beam modules in CLEX
Compatibility with other systems (vacuum, waveguides,…), stability [Q3 2011 – Q3 2012]
Short term program & expected results by end of 2012
Zoom on the next 6 months…
Installation & validation of alignment systems
Qualification of linear actuators (1DOF tests)
Alignment of Micro-contrôle girders w.r.t station unit
TestsWith external constraints
Once girders are re-installed in 169
Mid March
[2 months]Tests
Without external constraints (vacuum, waveguides)
Fidu
cial
isati
on a
nd d
imen
sion
al c
ontr
ol
4
Zoom …
Install & adjust plates
Install & adjust stretching devices
Install cWPS sensors + tiltmeters
Installation & validation of alignment systems
On concrete blocks On girders + cradles Around modules
Install cWPS
install tilt meter
Install cables + acquisition system
Prepare software
Install stretched wires
Validation of alignment systems
(radial & vertical displacements of wires in order to check proportional responses of sensors)
(Michail) (Michail)
5
Zoom …
1 DOF test bench (Mateusz)
Qualification of linear actuators (1DOF tests)
1DOF test bench : design ok, assembly ok, software ready end of this week
Qualification of Boostec linear actuators one per one [week 07 & 08]
Qualification of Micro contrôle linear actuators one per one [week 09 & 10]
Tests foreseen (over the whole range):
Linearity
Repeatability
Resolution
Determination of backlash
6
Zoom … Tests
Qualification of concept of articulation point (Micro-contrôle versus Boostec/CERN:
• Metrological evaluation
• Behavior of the articulation point w.r.t micrometric displacements, w.r.t larger displacements (+/- 1mm)
• Impact at beam level
• Impact of displacements on adjacent articulation points
• Validation of algorithm of repositioning
• Implementation of active pre-alignment
(Mateusz Sosin)
Zoom … Fiducialisation and dimensional control
Inter-comparison between methods:
• Romer Arm: order, reception tests & « prise en main »
• Laser Tracker AT 401: order, reception tests & « prise en main »
• Micro-triangulation: development of software, qualification tests, order of material
Preparation, follow-up of all dimensional controls & fiducialisation on components. (see table)
Zoom … Fiducialisation and dimensional control
(Sylvain)
9
Validation of sub-micrometric active alignment using WPS sensors and cam movers [Q1-Q2 2011]
Compatibility with stabilization requirements (first Eigen frequency > 50 Hz) [Q2 2011]
Feedback for design of the MB quad mock-up type 1 and 4, foreseen for the two beam
prototype modules in lab and CLEX [Q3 2011 - Q1 2012]
MB quad mock-up
Short term program & expected results by end of 2012
Mock-up ready [end of February 2011]
Validation of the algorithm of repositioning [Q1-Q2 2011]
(Michail, Raphaël)