3rd PACMAN workshop

Session

High-precision Engineering

21 Mar 2017, 08:30

6/2-024 - BE Auditorium Meyrin (CERN)

55. Nano-positioning of the main Linac quadrupoles

Mr David Tshilumba (CERN)

21/03/2017, 08:30

Presentation

CLIC (Compact Linear Collider) is a next generation particle collider under study at CERN. The accelerator will operate beams of nanometric size (1 nm ×40 nm) and produce a high density of collisions at the interaction cross section (2x10)^34 hits/(m^2 s)). To guarantee this collision quality, the pre-alignment tolerance of the main components of the accelerator must lie within 10 μm. In...

19. Mechatronic Design Principles applied to a DC Monochromator to reach 10 nrad Crystal to Crystal Stability.

Dr Theo Ruijl (MI-Partners)

21/03/2017, 08:55

For the Sirius, Brazilia’s 4th generation light source under development by LNLS, a novel Double Cristal
Monochromator (DCM) is developed. The monochromator is known as one of the most critical optical
elements in a beamline. The new 4th generation light source, with an emittance in the range of 100 prad,
requires extreme stability performance, requiring a crystal to crystal stability in the...

62. A 6DOF microvibration isolation, measurement and generation facility

Mr Charlie Jarvis (National Physical Laboratory)

21/03/2017, 09:20

Presentation

The National Physical Laboratory (UK) has developed and delivered a novel 6 degree-of-freedom micro-vibration test system for the European Space Agency’s test centre, ESTEC. The system measures the dynamic force and torque produced by spacecraft components between 10 µN to 1 N (1 µNm to 1 Nm), and subjects sensitive specimens to a known micro-vibration environment in the range 1 µg to 10 mg....

66. Determining alignment measurements uncertainties for large assemblies using stochastic analysis techniques

Mr Iordan Doytchinov (CERN/Cranfield University)

21/03/2017, 09:45

Presentation

Accurate, specific and traceable uncertainty budgeting of measurements is identified as key tool allowing micrometre alignment of large assemblies. The lack of standard methods to allow such accurate uncertainty statements is identified as a major research gap. As an answer to this a new uncertainty budgeting strategy following the International Standard of Uncertainty in Measurement (GUM -...

46. Active isolation of an extended structure using a high-resolution optical inertial sensor

Mrs Jennifer Watchi (ULB)

21/03/2017, 10:40

Presentation

In the future linear collider CLIC, the electromagnets focussing the beams of particles will have to be extremely stable, at the nanometre scale. In order to fulfil such stringent requirements, a prototype of coil-free active isolation system has been developed. This presentation will summarize the latest results obtained with our active isolation system. It consists of an extended frame...

49. What is the best displacement transducer for a seismic sensor?

Mr Peter Novotny (CERN)

21/03/2017, 11:05

Presentation

Development of a seismic sensor for the future Compact Linear Collider (CLIC) will be presented. Sensor in which three different types of sub-nanometre displacement transducers have been integrated: a Fabry-Pérot interferometer, an optical encoder and a capacitive transducer. This sensor allows us to compare the resolution of all the transducers under the same conditions, thus enabling us to...

59. 2D and 3D sensing for mobile robots

Dr Max Ruffo

21/03/2017, 11:30

Presentation

Terabee is challenging the perception that successful navigation for drones and robots requires dense point-clouds and expensive laser LiDAR scanners. We understood that long range and fine 3D resolution is far from being the unique answer to autonomous navigation, mainly because of the calculation power required and the failure modes embedded in complex algorithms.
In this session Max Ruffo,...

64. Modal parameters of surfaces for numeric models

Prof. Serge Samper (Université de Savoie)

21/03/2017, 11:55

Presentation

Measuring machines gives a more and more accurate number of points in order to describe a surface. In a design process, we need to have a better description of geometry in order to assess all the behaviours involving interactions between material and it’s environment.
Focussing at the same time the infinite complexity of real objects and the simplification needed to make simple choices is a...