Experimental results from the Brookhaven National Laboratory test electron beam ion source

1998 ◽  
Vol 69 (2) ◽  
pp. 640-642 ◽  
Author(s):  
E. Beebe ◽  
J. Alessi ◽  
A. Hershcovitch ◽  
A. Kponou ◽  
A. Pikin ◽  
...  
Keyword(s):  
Electron Beam ◽  
Laboratory Test ◽  
National Laboratory ◽  
Brookhaven National Laboratory ◽  
Ion Source ◽  
Experimental Results ◽  
Test Electron

Recent results with Au ions from a multiampere electron beam ion source at Brookhaven National Laboratory (invited abstract)

2004 ◽  
Vol 75 (5) ◽  
pp. 1542-1542 ◽  
Author(s):  
E. N. Beebe ◽  
J. G. Alessi ◽  
D. Graham ◽  
A. Kponou ◽  
A. Pikin ◽  
...  
Keyword(s):  
Electron Beam ◽  
National Laboratory ◽  
Brookhaven National Laboratory ◽  
Ion Source

scholarly journals Development of a Polarized Helium-3 Source for RHIC and eRHIC

2016 ◽  
Vol 40 ◽  
pp. 1660102 ◽  
Author(s):  
J. Maxwell ◽  
C. Epstein ◽  
R. Milner ◽  
J. Alessi ◽  
E. Beebe ◽  
...  
Keyword(s):  
Electron Beam ◽  
Nuclear Polarization ◽  
Optical Pumping ◽  
National Laboratory ◽  
Heavy Ion ◽  
Brookhaven National Laboratory ◽  
Ion Source ◽  
Relativistic Heavy Ion Collider ◽  
The Status ◽  
Helium 3

The addition of a polarized 3He ion source for use at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory would enable a host of new measurements, particularly in the context of a planned eRHIC. We are developing such a source using metastability exchange optical pumping to polarize helium-3, which will be then transferred into RHIC’s Electron Beam Ion Source for ionization. We aim to deliver nuclear polarization of near 70%, and roughly 10[Formula: see text] doubly-ionized 3He[Formula: see text] ions will be created in each 20 [Formula: see text]sec pulse. We discuss the design of the source, and the status of its development.

Status of the Brookhaven National Laboratory high current electron beam ion source test stand

2000 ◽  
Vol 71 (2) ◽  
pp. 893-895 ◽  
Author(s):  
E. Beebe ◽  
J. Alessi ◽  
S. Bellavia ◽  
A. Hershcovitch ◽  
A. Kponou ◽  
...  
Keyword(s):  
Electron Beam ◽  
National Laboratory ◽  
Brookhaven National Laboratory ◽  
Ion Source ◽  
Test Stand ◽  
High Current ◽  
High Current Electron Beam ◽  
Current Electron ◽  
High Current Electron ◽  
Source Test

scholarly journals Two approaches to electron beam enhancement of the metal vapor vacuum arc ion source

2003 ◽  
Vol 21 (1) ◽  
pp. 103-108
Author(s):  
B.M. JOHNSON ◽  
A. HERSHCOVITCH ◽  
A.S. BUGAEV ◽  
V.I. GUSHENETS ◽  
E.M. OKS ◽  
...  
Keyword(s):  
Electron Beam ◽  
National Laboratory ◽  
Metal Vapor ◽  
Brookhaven National Laboratory ◽  
Ion Source ◽  
Vacuum Arc ◽  
High Current Electronics ◽  
Experimental Physics ◽  
Internal Electron ◽  
Charge States

Conclusive demonstration of electron-beam enhancement of ion charge states for the Metal Vapor Vacuum Arc (MEVVA) ion source was recently achieved using an external electron beam (E-MEVVA) in experiments performed jointly among the Institute for Theoretical and Experimental Physics (ITEP), Moscow, Russia, the High Current Electronics Institute (HCEI), Tomsk, Russia, and Brookhaven National Laboratory (BNL), USA. The E-MEVVA experiments were performed in Moscow and Tomsk with nearly the same design of ion sources. Results for lead and bismuth cathodes yielded maximum ion charge states of Pb7+ and Bi8+ for E-MEVVA, as compared to Pb2+ and Bi2+ for conventional MEVVA operation. Additional encouraging results were also obtained using a Z-discharge to produce an internal electron-beam (Z-MEVVA and LIZ-MEV).

The Brookhaven National Laboratory electron beam ion source for RHIC

2010 ◽  
Vol 81 (2) ◽  
pp. 02A509 ◽  
Author(s):  
J. G. Alessi ◽  
D. Barton ◽  
E. Beebe ◽  
S. Bellavia ◽  
O. Gould ◽  
...  
Keyword(s):  
Electron Beam ◽  
National Laboratory ◽  
Brookhaven National Laboratory ◽  
Ion Source

Brookhaven National Laboratory electron beam test stand

1998 ◽  
Vol 69 (2) ◽  
pp. 697-699 ◽  
Author(s):  
A. Pikin ◽  
J. Alessi ◽  
E. Beebe ◽  
A. Kponou ◽  
K. Prelec ◽  
...  
Keyword(s):  
Electron Beam ◽  
National Laboratory ◽  
Brookhaven National Laboratory ◽  
Test Stand ◽  
Beam Test

The e+–H experiment of the Bielefeld–Brookhaven collaboration

1996 ◽  
Vol 74 (7-8) ◽  
pp. 361-366 ◽  
Author(s):  
W. Raith ◽  
A. Hofmann ◽  
M. Weber ◽  
K. G. Lynn
Keyword(s):  
Cross Sections ◽  
High Intensity ◽  
National Laboratory ◽  
Positron Beam ◽  
Theoretical Work ◽  
Brookhaven National Laboratory ◽  
Experimental Results ◽  
Experimental Setup ◽  
Open Questions ◽  
Remaining Time

The Bielefeld–Brookhaven collaboration began in 1989 and was originally scheduled for a duration of three and then six years and has recently been extended for about one more year. It will end in 1996 for reasons of manpower and funding. The goal of this collaboration was to measure integral and differential e+–H cross sections by employing the high-intensity positron beam (HIP) of the Brookhaven National Laboratory, anticipated to provide an electrostatically guided beam of 109 moderated positrons s−1. This goal has not yet been reached. Over all these years, the HIP operation has been suffering from a variety of technical difficulties, despite the great efforts of all parties involved. Nevertheless, since the HIP situation is improving, we will continue this collaboration and try to reach the goal within the remaining time. Our experimental results obtained with low-current positron beams thus far are discussed together with related experimental and theoretical work of other groups. Particular attention is given to open questions. The present experimental setup at the Brookhaven National Laboratory is described in detail. The planned measurements are outlined in order of their priority.

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