Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: LUVOIR-ECLIPS closed-loop adaptive optics performance and contrast
  predictions   One of the primary science goals of the Large UV/Optical/Infrared Surveyor
(LUVOIR) mission concept is to detect and characterize Earth-like exoplanets
orbiting nearby stars with direct imaging. The success of its coronagraph
instrument ECLIPS (Extreme Coronagraph for Living Planetary Systems) depends on
the ability to stabilize the wavefront from a large segmented mirror such that
optical path differences are limited to tens of picometers RMS during an
exposure time of a few hours. In order to relax the constraints on the
mechanical stability, ECLIPS will be equipped with a wavefront sensing and
control (WS&C) architecture to correct wavefront errors up to temporal
frequencies >~1 Hz. These errors may be dominated by spacecraft structural
dynamics exciting vibrations at the segmented primary mirror. In this work, we
present detailed simulations of the WS&C system within the ECLIPS instrument
and the resulting contrast performance. This study assumes wavefront
aberrations based on a finite element model of a simulated telescope with
spacecraft structural dynamics. Wavefront residuals are then computed according
to a model of the adaptive optics system that includes numerical propagation to
simulate a realistic wavefront sensor and an analytical model of the temporal
performance. An end-to-end numerical propagation model of ECLIPS is then used
to estimate the residual starlight intensity distribution at the science
detector. We show that the contrast performance depends strongly on the target
star magnitude and the spatio-temporal distribution of wavefront errors from
the telescope. In cases with significant vibration, we advocate for the use of
laser metrology to mitigate high temporal frequency wavefront errors and
increase the mission yield.

22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph