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Table 1 Overview of the scientific requirements of MAQRO

From: Macroscopic Quantum Resonators (MAQRO): 2015 update

Parameter Requirement
Nominal mission lifetime (without possible extension) 2 years
Environment temperature <20 K
Acceleration sensitivity
 along UV cavity
 along IR cavity
 perpendicular to optical bench
\({\lesssim}1\mbox{ (pm/s}^{2}\mbox{)/}\sqrt{\mbox{Hz}}\)
\({\lesssim}100\mbox{ (pm/s}^{2}\mbox{)/}\sqrt{\mbox{Hz}}\)
\({\lesssim}5\mbox{ (nm/s}^{2}\mbox{)/}\sqrt{\mbox{Hz}}\)
Optical-trapping occupation number
 along cavity
 orthogonal to cavity
Test particles
108 amu to 1010 amu
0 e
dielectric, transparent at 1,064 nm
30 nm to 120 nm
25 K
Period of phase grating 100 nm
Accuracy of position detection
 along UV cavity
 along IR cavity
 perpendicular to optical bench
20 nm
100 nm
60 μm
Time for on-demand particle loading 100 s
Measurement time per data point 100 s
Vacuum - particle density <500 cm−3