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Full Record Details
Persistent URL
http://purl.org/net/epubs/work/12257032
Record Status
Checked
Record Id
12257032
Title
A quantum gas jet for non-invasive beam profile measurement
Contributors
A Jeff (Liverpool Univ., and CERN)
,
EB Holzer (CERN)
,
T Lefèvre (CERN)
,
V Tzoganis (Cockcroft Inst., and Liverpool Univ.)
,
CP Welsch (Cockcroft Inst., and Liverpool Univ.)
,
H Zhang (Cockcroft Inst., and Liverpool Univ.)
Abstract
A novel instrument for accelerator beam diagnostics is being developed by using De Broglie-wave focusing to create an ultra-thin neutral gas jet. Scanning the gas jet across a particle beam while measuring the interaction products, the beam profile can be measured. Such a jet scanner will provide an invaluable diagnostic tool in beams which are too intense for the use of wire scanners, such as the proposed CLIC Drive Beam. In order to create a sufficiently thin jet, a focusing element working on the de Broglie wavelength of the Helium atom has been designed. Following the principles of the Photon Sieve, we have constructed an Atomic Sieve consisting of 5230 nano-holes etched into a thin film of silicon nitride. When a quasi-monochromatic Helium jet is incident on the sieve, an interference pattern with a single central maximum is created. The stream of Helium atoms passing through this central maximum is much narrower than a conventional gas jet. The first experiences with this device are presented here, along with plans for further tests.
Organisation
CI
,
STFC
Keywords
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Language
English (EN)
Type
Details
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Year
Paper In Conference Proceedings
In 3rd International Beam Instrumentation Conference (IBIC2014), Monterey, California, USA, 14-18 Sep 2014, (2014).
Cockcroft-14-42.pdf
2014
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