| |
- I. Lobach
University of Chicago, Chicago, Illinois, USA
- A. Halavanau, Z. Huang, V. Yakimenko
SLAC, Menlo Park, California, USA
- K. Kim
ANL, Lemont, Illinois, USA
- V.A. Lebedev, S. Nagaitsev, A.L. Romanov, G. Stancari
Fermilab, Batavia, Illinois, USA
- A.Y. Murokh
RadiaBeam, Marina del Rey, California, USA
- T.V. Shaftan
BNL, Upton, New York, USA
|
|
| |
We study turn-by-turn fluctuations in the number of emitted photons in an undulator, installed in the IOTA electron storage ring at Fermilab, with an InGaAs PIN photodiode and an integrating circuit. In this paper, we present a theoretical model for the experimental data from previous similar experiments and in our present experiment, we attempt to verify the model in an independent and a more systematic way. Moreover, in our experiment we consider the regime of very small fluctuation when the contribution from the photon shot noise is significant, whereas we believe it was negligible in the previous experiments. Accordingly, we present certain critical improvements in the experimental setup that let us measure such a small fluctuation.
|
|
