Skip to main content Accessibility help
×
Home

TEPEE/GReAT (General Relativity Accuracy Test in an Einstein Elevator): Advances in the detector development

  • A. Oscoz, E. Mediavilla, M. Serra-Ricart, V. Iafolla (a1), E. Fiorenza (a1), C. Lefevre (a1), D.M. Lucchesi (a1), A. Morbidini (a1), S. Nozzoli (a1), R. Peron (a1), M. Persichini (a1), A. Reale (a1), F. Santoli (a1), E.C. Lorenzini (a2) (a3), I.I. Shapiro (a2), J. Ashenberg (a2), C. Bombardelli (a2) and S. Glashow (a4)...

Abstract

This paper reports the development of an experiment (TEPEE/GReAT) to test the Equivalence Principle (EP) at a level of accuracy equal to 5 × 10-15, by means of a differential accelerometer free falling in a cryogenic vacuum capsule released from a stratospheric balloon. Such an accuracy requires resolving a very small signal out of the instrument's intrinsic noise and the noise associated with the instrument's motion. Imperfections in the construction of the detector introduce gravity gradient noise that it is possible to separate from the violation signal spinning the detector around an horizontal axis in order to have the EP violation signal and the gravity gradients one modulated at two different frequencies. Experimental results on prototype instruments showing high sensitivity and common mode rejection factor are shown.

Copyright

References

Hide All
[1] Iafolla, V., Nozzoli, S., Lorenzini, E.C., & Milyukov, V., 1998, Rev. Sci. Instruments, 69, 4146
[2] Iafolla, V., Nozzoli, S., Lorenzini, E.C., Shapiro, I.I., & Milyukov, V., 2000, Class. Quant. Gravity, 17, 2327
[3] Lorenzini, E., Shapiro, I., Iafolla, V., Nozzoli, S., Milyukov, V., & Zielinski, J., 2000 in 33rd COSPAR Scientific Assembly, Warsaw, Poland
[4] Will, C.M., 2006, Living Rev. Relativity, 9, 3

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed