Study of Fluctuations in Undulator Radiation in the IOTA Ring at Fermilab

Conference · Tue Jan 01 00:00:00 EST 2019

OSTI ID:1570213

Lobach, Ihar ^[1]; Nagaitsev, S. ^[2]; Lebedev, V. ^[2]; Romanov, A. ^[2]; Valishev, A. ^[2]; Stancari, G. ^[2]; Halavanau, A. ^[3]; Huang, Z. ^[3]; Yakimenko, V. ^[3]; Murokh, A. ^[4]; Kim, K. J. ^[5]; Shaftan, T. ^[6]

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1. Chicago U.
2. Fermilab
3. SLAC
4. RadiaBeam Tech.
5. Argonne
6. Brookhaven

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.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States); Brookhaven National Lab. (BNL), Upton, NY (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1570213
• Report Number(s): FERMILAB-POSTER-19-124-AD; oai:inspirehep.net:1757691
• Country of Publication: United States
• Language: English

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