LISA Pathfinder test-mass charging during galactic cosmic-ray flux short-term variations

C. Grimani; M. Fabi; A. Lobo; I. Mateos; D. Telloni

doi:10.1088/0264-9381/32/3/035001

LISA Pathfinder test-mass charging during galactic cosmic-ray flux short-term variations

C. Grimani, M. Fabi, A. Lobo, I. Mateos, D. Telloni

Research output: Contribution to journal › Article › peer-review

Abstract

Metal free-floating test masses aboard the future interferometers devoted to gravitational wave detection in space are charged by galactic and solar cosmic rays with energies < 100 MeV/n. This process represents one of the main sources of noise in the lowest frequency band (> 10_?3 Hz) of these experiments. We study here the charging of the LISA Pathfinder (LISA-PF) goldplatinum test masses due to galactic cosmic-ray (GCR) protons and helium nuclei with the Fluka Monte Carlo toolkit. Projections of the energy spectra of GCRs during the LISA-PF operations in 2015 are considered. This work was carried out on the basis of the solar activity level and solar polarity epoch expected for LISA-PF. The effects of GCR short-term variations are evaluated here for the first time. Classical Forbush decreases, GCR variations induced by the Sun rotation, and fluctuations in the LISA-PF frequency bandwidth are discussed.

Original language	English
Article number	035001
Journal	Classical and Quantum Gravity
Volume	32
Issue number	3
DOIs	https://doi.org/10.1088/0264-9381/32/3/035001
Publication status	Published - 5 Feb 2015
Externally published	Yes

Keywords

cosmic rays
gravitational radiation detectors
interplanetary propagation
solar cycles

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10.1088/0264-9381/32/3/035001

Cite this

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title = "LISA Pathfinder test-mass charging during galactic cosmic-ray flux short-term variations",

abstract = "Metal free-floating test masses aboard the future interferometers devoted to gravitational wave detection in space are charged by galactic and solar cosmic rays with energies < 100 MeV/n. This process represents one of the main sources of noise in the lowest frequency band (> 10?3 Hz) of these experiments. We study here the charging of the LISA Pathfinder (LISA-PF) goldplatinum test masses due to galactic cosmic-ray (GCR) protons and helium nuclei with the Fluka Monte Carlo toolkit. Projections of the energy spectra of GCRs during the LISA-PF operations in 2015 are considered. This work was carried out on the basis of the solar activity level and solar polarity epoch expected for LISA-PF. The effects of GCR short-term variations are evaluated here for the first time. Classical Forbush decreases, GCR variations induced by the Sun rotation, and fluctuations in the LISA-PF frequency bandwidth are discussed.",

keywords = "cosmic rays, gravitational radiation detectors, interplanetary propagation, solar cycles",

author = "C. Grimani and M. Fabi and A. Lobo and I. Mateos and D. Telloni",

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T1 - LISA Pathfinder test-mass charging during galactic cosmic-ray flux short-term variations

AU - Grimani, C.

AU - Fabi, M.

AU - Lobo, A.

AU - Mateos, I.

AU - Telloni, D.

PY - 2015/2/5

Y1 - 2015/2/5

N2 - Metal free-floating test masses aboard the future interferometers devoted to gravitational wave detection in space are charged by galactic and solar cosmic rays with energies < 100 MeV/n. This process represents one of the main sources of noise in the lowest frequency band (> 10?3 Hz) of these experiments. We study here the charging of the LISA Pathfinder (LISA-PF) goldplatinum test masses due to galactic cosmic-ray (GCR) protons and helium nuclei with the Fluka Monte Carlo toolkit. Projections of the energy spectra of GCRs during the LISA-PF operations in 2015 are considered. This work was carried out on the basis of the solar activity level and solar polarity epoch expected for LISA-PF. The effects of GCR short-term variations are evaluated here for the first time. Classical Forbush decreases, GCR variations induced by the Sun rotation, and fluctuations in the LISA-PF frequency bandwidth are discussed.

AB - Metal free-floating test masses aboard the future interferometers devoted to gravitational wave detection in space are charged by galactic and solar cosmic rays with energies < 100 MeV/n. This process represents one of the main sources of noise in the lowest frequency band (> 10?3 Hz) of these experiments. We study here the charging of the LISA Pathfinder (LISA-PF) goldplatinum test masses due to galactic cosmic-ray (GCR) protons and helium nuclei with the Fluka Monte Carlo toolkit. Projections of the energy spectra of GCRs during the LISA-PF operations in 2015 are considered. This work was carried out on the basis of the solar activity level and solar polarity epoch expected for LISA-PF. The effects of GCR short-term variations are evaluated here for the first time. Classical Forbush decreases, GCR variations induced by the Sun rotation, and fluctuations in the LISA-PF frequency bandwidth are discussed.

KW - cosmic rays

KW - gravitational radiation detectors

KW - interplanetary propagation

KW - solar cycles

U2 - 10.1088/0264-9381/32/3/035001

DO - 10.1088/0264-9381/32/3/035001

M3 - Article

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SN - 0264-9381

VL - 32

JO - Classical and Quantum Gravity

JF - Classical and Quantum Gravity

IS - 3

M1 - 035001

ER -

LISA Pathfinder test-mass charging during galactic cosmic-ray flux short-term variations

Abstract

Keywords

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