| Title |
Low Field NMR Probe Commissioning In LEReC Energy Spectrometer |
| Authors |
- T.A. Miller, M. Blaskiewicz, A.V. Fedotov, D.M. Gassner, J. Kewisch, M.G. Minty, S. Seletskiy, H. Song, P. Thieberger, P. Wanderer
BNL, Upton, Long Island, New York, USA
- R.B. Boucherpresenter, C. Germain, J-C. Germain
Caylar Scientific Instrumentation, Villebon-sur-Yvette, France
- R.B. Boucherpresenter
University Paris Sud, Orsay, France
|
| Abstract |
Low Energy RHIC electron Cooling (LEReC) is planned during a 7.7 - 20 GeV/n run with Au+79 starting in 2019 (200 GeV/n center-of-mass typical), to explore the existence and location of the QCD critical point. An electron accelerator for LEReC is being constructed to provide a beam to cool both the blue & yellow RHIC ion beams by co-propagating a 10 - 50 mA electron beam of 1.6 - 2.7 MeV. For effective cooling of the ion beam, the electron and ion beam energies must be matched with 10⁻⁴ accuracy. As the energy of the RHIC ion beam can be known to <1×10-4, the absolute energy of the electron beam must also be measured to 10-4 accuracy. A 180° bend transport magnet will be used as an energy spectrometer for the electron beam providing fields in the range of 180 - 325 gauss. A Nuclear Magnetic Resonance (NMR) gaussmeter has been customized to measure the field in the magnet (to as low as 143 gauss) with an accuracy of 50 milligauss and a noise floor of < 20 milligauss. The concept of the magnetic spectrometer and details and commissioning performance of the NMR instrument are presented in this paper.
|
| Funding |
Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy |
| Paper |
download WEPCF05.PDF [0.868 MB / 5 pages] |
| Poster |
download WEPCF05_POSTER.PDF [6.584 MB] |
| Export |
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| Conference |
IBIC2017, Grand Rapids, MI, USA |
| Series |
International Beam Instrumentation Conference (6th) |
| Proceedings |
Link to full IBIC2017 Proccedings |
| Session |
Wednesday Poster |
| Date |
23-Aug-17 16:00–18:00 |
| Main Classification |
8 Charge Monitors and Other Instruments |
| Keywords |
ion, electron, dipole, instrumentation, operation |
| Publisher |
JACoW, Geneva, Switzerland |
| Editors |
Zhengzheng Liu (FRIB, East Lansing, MI, USA); Steven Lidia (FRIB, East Lansing, MI, USA); Amy McCausey (FRIB, East Lansing, MI, USA); Volker RW Schaa (GSI, Darmstadt, Germany) |
| ISBN |
978-3-95450-192-2 |
| Published |
March 2018 |
| Copyright |
|
