Nanometer scale active ground motion isolator

Breton, Ronan Le; Deleglise, Guillaume; Allibe, Julie; Badel, Adrien; Balik, G.; Caron, Bernard; Jérémie, A.; Lottin, Jacques; Vilalte, S.

doi:10.1016/j.sna.2013.09.020

Cited by 5 publications

(2 citation statements)

References 17 publications

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“…They are related to the extended shape of the structure, the limited stability of the floor on which they are mounted, and limita tions on the technology of the sensors and actuators which could couple with the electromagnets. During the last twenty years, many studies have been conducted in order to comply with these requirements, both for the active stabilisation of the main beam quadrupoles [6][7][8], and for the stabilisation of final focus quadrupoles [9][10][11][12][13][14][15]. A critical review of strategies can be found in [16].…”

Section: Introductionmentioning

confidence: 99%

Coil-free active stabilisation of extended payloads with optical inertial sensors

Watchi

Ding

Tshilumba

et al. 2018

Meas. Sci. Technol.

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Abstract. This paper presents a new active isolation strategy and system which is dedicated to extended payloads, and compatible with particle accelerator environment. In comparison to the current isolation systems used in this environment, the system proposed does not contains any coil or elastomer and the supporting frame is dedicated to isolate long payloads from seismic motion. The concept proposed has been tested numerically on 3 and 6 degrees of freedom models, and validated experimentally on a one degree of freedom scaled test set-up. An attenuation of 40 dB at 1 Hz has been reached with the stage built. The complete description of performance and a noise budgeting are included in this paper.

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Section: Introductionmentioning

confidence: 99%

Coil-free active stabilisation of extended payloads with optical inertial sensors

Watchi

Ding

Tshilumba

et al. 2018

Meas. Sci. Technol.

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“…For the CLIC [5][6][7] beam structure intratrain feedback is less efficient and a combination of a careful design of the support structures with an active stabilization system is required [8][9][10], in combination with a repositioning system [11] and a preisolator [12]. The CLIC final doublet is required to be as stable as 0.15 nm above 4 Hz [5].…”

Section: Introductionmentioning

confidence: 99%

Budgeting and control of the mechanical noise in the International Linear Collider final focus system

Tshilumba

Oriunno

Markiewicz

et al. 2014

Phys. Rev. ST Accel. Beams

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In this paper, we present a simplified vibration model of the silicon detector (SiD), where the final doublet (QD0) is captured inside the detector and the penultimate magnet (QF1) is inside the machine tunnel. Ground motion spectra measured at the detector hall at SLAC have been used together with a spectrum of the technical noise on the detector. The model predicts that the maximum level of rms (root mean square) vibration seen by QD0 is well below the capture range of the interaction point (IP) feedback system available in the ILC. With the addition of an active stabilization system on QD0, it is also possible to get closer to the stability requirements of the compact linear collider (CLIC). These results can have important implications for CLIC.

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What is the best displacement transducer for a seismic sensor?

Novotny¹,

Aimard²,

Balik³

et al. 2017

2017 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)

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International audienceThis paper presents a development of a seismic sensor for the future Compact Linear Collider (CLIC). 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 verify the most suitable transducer for a seismic sensor. The best resolution of 28.8 pm was achieved with the optical encoder. This in combination with ease of installation makes it an ideal candidate for a seismic senor for CLIC

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Nanometer scale active ground motion isolator

Cited by 5 publications

References 17 publications

Coil-free active stabilisation of extended payloads with optical inertial sensors

Coil-free active stabilisation of extended payloads with optical inertial sensors

Budgeting and control of the mechanical noise in the International Linear Collider final focus system

What is the best displacement transducer for a seismic sensor?

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