2nd PACMAN workshop

Session

Handling the nanometer

14 Jun 2016, 10:50

Debrecen

Conveners

Handling the nanometer

• Michele Modena (CERN)

101. Active isolation of an extended structure with fused sensors

Prof. Christophe Guy R Collette (Libre Université de Bruxelles)

14/06/2016, 10:50

This talk presents an active vibration isolation strategy combining centralized interferometric inertial control and decentralized force control loops. The strategy will be illustrated on simple models, and then applied to isolate an extended structure from ground vibration. Preliminary experimental results will be presented and discussed.

94. Design and optimization techniques for a nano-positioning system

Mr David Tshilumba (CERN)

14/06/2016, 11:10

The objective of this research project is the design of a long range nano-positioning system for the CLIC electromagnets ($m ≅ 80kg$).

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 ($2$ x $10^{34}$ ...

87. Sub-nanometer displacement measurements in seismic sensors

Mr Peter Novotny (CERN)

14/06/2016, 11:30

Specific requirements for vibrational characterisation and isolation of big scientific projects like CLIC have led to the development of the seismic sensors which utilise different types of sub-nanometric displacement transducers to measure relative displacement between an inertial mass and the sensor housing. Considering the nature of accelerator environment, magnetic based transducers are...

88. Development of a high-resolution optical inertial sensor for sub-Hz seismic isolation

Ms Jennifer Watchi (Université Libre de Bruxelles)

14/06/2016, 11:50

Precision engineering tasks require active isolation systems that are efficient especially at low frequencies. The limitations of such control systems include the resolution of the sensor used and the magnetic coupling between the sensor and the actuator. In order to bypass these limitations, inertial sensors using Michelson interferometer are being developed. A first prototype has been built...

99. High resolution interferometry for sub-nm displacement measurements

Dr Marco Pisani (INRIM)

14/06/2016, 12:10

After an introduction on the principles of laser interferometry, the most popular interferometers (Michelson and Fabry-Perot) will be briefly described. Then, practical realization set-up (homodyne, heterodyne synthetic wavelength) and related application fields will be discussed. Finally, particular attention will be given to short distance interferometers and to the techniques used to...