Increased Brownian Force Noise from Molecular Impacts in a Constrained Volume

被引：60

作者：

Cavalleri, A. ^{[1
]}

Ciani, G. ^{[3
,4
]}

Dolesi, R. ^{[3
,4
]}

Heptonstall, A. ^{[2
]}

Hueller, M. ^{[3
,4
]}

Nicolodi, D. ^{[3
,4
]}

Rowan, S. ^{[2
]}

Tombolato, D. ^{[3
,4
]}

Vitale, S. ^{[3
,4
]}

Wass, P. J. ^{[3
,4
]}

Weber, W. J. ^{[3
,4
]}

机构：

[1] Ctr Fis Stati Aggregati, I-38123 Povo, Trento, Italy

[2] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland

[3] Univ Trent, Dipartimento Fis, I-38123 Povo, Trento, Italy

[4] Ist Nazl Fis Nucl, Grp Trento, I-38123 Povo, Trento, Italy

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 14期

关键词：

TORSION PENDULUM; LISA; MISSION; VACUUM; FIBERS;

D O I：

10.1103/PhysRevLett.103.140601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on residual-gas damping of the motion of a macroscopic test mass enclosed in a nearby housing in the molecular flow regime. The damping coefficient, and thus the associated thermal force noise, is found to increase significantly when the distance between the test mass and surrounding walls is smaller than the test mass itself. The effect has been investigated with two torsion pendulums of different geometry and has been modeled in a numerical simulation whose predictions are in good agreement with the measurements. Relevant to a wide variety of small-force experiments, the residual-gas force noise power for the test masses in the LISA gravitational wave observatory is roughly a factor 15 larger than in an infinite gas volume, though still compatible with the target acceleration noise of 3 fm s(-2) Hz(-1/2) at the foreseen pressure below 10(-6) Pa.

引用

页数：4

共 23 条

[1] The LTP experiment on the LISA Pathfinder mission [J].

Anza, S ;

Armano, M ;

Balaguer, E ;

Benedetti, M ;

Boatella, C ;

Bosetti, P ;

Bortoluzzi, D ;

Brandt, N ;

Braxmaier, C ;

Caldwell, M ;

Carbone, L ;

Cavalleri, A ;

Ciccolella, A ;

Cristofolini, I ;

Cruise, M ;

Da Lio, M ;

Danzmann, K ;

Desiderio, D ;

Dolesi, R ;

Dunbar, N ;

Fichter, W ;

Garcia, C ;

Garcia-Berro, E ;

Marin, AFG ;

Gerndt, R ;

Gianolio, A ;

Giardini, D ;

Gruenagel, R ;

Hammesfahr, A ;

Heinzel, G ;

Hough, J ;

Hoyland, D ;

Hueller, M ;

Jennrich, O ;

Johann, U ;

Kemble, S ;

Killow, C ;

Kolbe, D ;

Landgraf, M ;

Lobo, A ;

Lorizzo, V ;

Mance, D ;

Middleton, K ;

Nappo, F ;

Nofrarias, M ;

Racca, G ;

Ramos, J ;

Robertson, D ;

Sallusti, M ;

Sandford, M .

CLASSICAL AND QUANTUM GRAVITY, 2005, 22 (10) :S125-S138

[2] Energy transfer model for squeeze-film air damping in low vacuum [J].

Bao, MH ;

Yang, H ;

Yin, H ;

Sun, YC .

JOURNAL OF MICROMECHANICS AND MICROENGINEERING, 2002, 12 (03) :341-346

[3]

Bender P., 2000, LISA CORNERSTONE MIS, P11

[4] ON A THEOREM OF IRREVERSIBLE THERMODYNAMICS [J].

CALLEN, HB ;

GREENE, RF .

PHYSICAL REVIEW, 1952, 86 (05) :702-710

[5]

Carbone L, 2006, AIP CONF PROC, V873, P561

[6] Thermal gradient-induced forces on geodesic reference masses for LISA [J].

Carbone, L. ;

Cavalleri, A. ;

Ciani, G. ;

Dolesi, R. ;

Hueller, M. ;

Tombolato, D. ;

Vitale, S. ;

Weber, W. J. .

PHYSICAL REVIEW D, 2007, 76 (10)

[7] Upper limits to surface-force disturbances on LISA proof masses and the possibility of observing galactic binaries [J].

Carbone, Ludovico ;

Ciani, Giacomo ;

Dolesi, Rita ;

Hueller, Mauro ;

Tombolato, David ;

Vitale, Stefano ;

Weber, William Joseph ;

Cavalleri, Antonella .

PHYSICAL REVIEW D, 2007, 75 (04)

[8] A new torsion pendulum for testing the limits of free-fall for LISA test masses [J].

Cavalleri, A. ;

Ciani, G. ;

Dolesi, R. ;

Heptonstall, A. ;

Hueller, M. ;

Nicolodi, D. ;

Rowan, S. ;

Tombolato, D. ;

Vitale, S. ;

Wass, P. J. ;

Weber, W. J. .

CLASSICAL AND QUANTUM GRAVITY, 2009, 26 (09)

[9] Direct force measurements for testing the LISA Pathfinder gravitational reference sensor [J].

Cavalleri, A. ;

Ciani, G. ;

Dolesi, R. ;

Hueller, M. ;

Nicolodi, D. ;

Tombolato, D. ;

Wass, P. J. ;

Weber, W. J. ;

Vitale, S. ;

Carbone, L. .

CLASSICAL AND QUANTUM GRAVITY, 2009, 26 (09)

[10]

CAVALLERI A, ARXIV09075375V1

← 1 2 3 →