The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
@InProceedings{lumpkin:ibic2020-tupp18,
author = {A.H. Lumpkin and K.P. Wootton},
title = {{Observations of Optical Synchrotron Radiation from Ultra-low Charges Stored in a Ring Operating at 425 MeV}},
booktitle = {Proc. IBIC'20},
pages = {61--65},
paper = {TUPP18},
language = {english},
keywords = {electron, background, photon, radiation, synchrotron},
venue = {Santos, Brazil},
series = {International Beam Instrumentation Conference},
number = {9},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {10},
year = {2020},
issn = {2673-5350},
isbn = {978-3-95450-222-6},
doi = {10.18429/JACoW-IBIC2020-TUPP18},
url = {https://www.jacow.org/ibic2020/papers/tupp18.pdf},
note = {https://doi.org/10.18429/JACoW-IBIC2020-TUPP18},
abstract = {The initial observations of optical synchrotron radiation (OSR) emitted over millions of passes from a few electrons circulating in the Particle Accumulator Ring (PAR) at the Advanced Photon Source have been done with a digital CMOS camera and a synchroscan streak camera operating at 117.3 MHz. The discrete changes of integrated counts in the CMOS image region of interest are ascribed to single electron steps at ~3500 cts per electron. Circulations of a single electron at 375 MeV and at 425 MeV were demonstrated in the 12-bit digital FLIR USB3 camera images. The Hamamatsu C5680 streak camera operating at the 12th harmonic of the fundamental revolution frequency at 9.77 MHz was used to measure the zero-current bunch length from 0.5 nC circulating charge down to 10s of electrons or <10 aC. The latter cases were performed with 6-ps temporal resolution for the first time anywhere, to our knowledge. We report a preliminary effective bunch length of 276 ± 36 ps for 57 electrons (9.1 aC) stored based on a fit to a single Gaussian peak. The results will be compared to the standard zero-current model for the ring.},
}