| Autor: |
Chris R. Purcell, Albert Zondervan, Rodger Sparks, Manu Poletti |
| Rok vydání: |
2007 |
| Předmět: |
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| Zdroj: |
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 259:47-49 |
| ISSN: |
0168-583X |
| Popis: |
This facility report discusses progress and outcomes of three major upgrade projects on the AMS facility at GNS Science, New Zealand. Converting the EN-tandem accelerator from a belt-driven charging system to a Pelletron has reduced the fluctuations on the terminal voltage by at least one order of magnitude. The Pelletron system has been operating for ca . 10,000 h and without problems. Interference-free detection of 26 Al 7+ is now possible with a new beamline that features a Wien velocity filter dispersing perpendicular with respect to the analysing magnet’s bending plane. The detector spectra for 10 Be 3+ and, to a lesser degree, for 14 C 4+ have lower backgrounds than in the old setup. Computer control of ca . half of all parameters along the AMS beamlines is implemented through a distributed network built from a combination of off-the-shelf and in-house built electronic interfaces. Separate from this network is AMS measurement control, for real-time measurement of isotope detector signals and control of the isotope-switching part of the inflection system. Current projects are replacement of the AMS measurement control system and expansion of the parameter control network to all beamlines. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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Full Text from ScienceDirect