A dedicated AMS setup for medium mass isotopes at the Cologne FN Tandem Accelerator
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| Title: | Main Title: A dedicated AMS setup for medium mass isotopes at the Cologne FN Tandem Accelerator |
| Description: | Abstract: The new AMS system at the Cologne 10 MV FN accelerator was finalized in its first stage. The system has been designed for the measurement of medium mass isotopes, especially for 53Mn and 60Fe. It provides the opportunity to use several detector systems in different combinations, degrader foils with an electrostatic analyzer, a 4 m time of flight system and a two anode gas ionization detector. In a first test period we have measured the suppression and separation capability of the detector systems with the stable isobars 54Cr and 54Fe. We investigated the performance of the individual components, the dispersion of the electrostatic analyzer as well as the resolution of the time of flight system and of the gas ionization detector. We present the achieved separation power S=D=W for each component (with W the width of the distributions and D the distances). The suppressions are mainly dominated by the energy loss and the energy loss straggling by SiN degrader foil stacks. The results were compared to calculations. We will present spectra measured with standard material, with a (53Mn/55Mn) ratio of 10-9, and background spectra measured with blank sample material. Transmission tests show an overall efficiency of 0.0002%, including sputter efficiency, charge state yield, transmissions and software gates. The final component of our AMS setup, a 135°-magnet, designed for gas-filled operation was installed in spring 2017. It will increase the overall efficiency and improves the isobar suppression. Supported by the DFG and the Excellence Initiative of the University Cologne, Emerging Group ULDETIS. We acknowledge the Paul Scherrer Institut, Swizerland, for the provision of standard material. |
Responsible Party
| Creator: | Markus Schiffer (Author) |
| Publisher: | CRC1211 Database (CRC1211DB) |
| Publication Year: | 2019 |
Topic
| CRC1211 Topic: | Dating |
| Related Subproject: | D1 |
| Subject: | Keyword: Accelerator Mass Spectroscopy |
File Details
| Filename: | M_Schiffer.pdf |
| Data Type: | Text - Text |
| File Size: | 3.3 MB |
| Date: | Available: 14.08.2017 |
| Mime Type: | application/pdf |
| Language: | English |
| Status: | Completed |
Constraints
| Download Permission: | Only Project Members |
| General Access and Use Conditions: | According to the CRC1211DB data policy agreement. |
| Access Limitations: | According to the CRC1211DB data policy agreement. |
| Licence: | None |
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Specific Information - Presentation
| Presenter: | M. Schiffer |
| Presentation Date: | 14th of August, 2017 |
| Presentation Type: | Talk |
| Event: | AMS14 |
| Event Type: | Conference |
| Event Location: | Ottawa, Kanada |
| Event Duration: | 14th of August, 2017 - 18th of August, 2017 |
Metadata Details
| Metadata Creator: | Markus Schiffer |
| Metadata Created: | 30.10.2019 |
| Metadata Last Updated: | 30.10.2019 |
| Subproject: | D1 |
| Funding Phase: | 1 |
| Metadata Language: | English |
| Metadata Version: | V50 |
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| Page Visits: | 81 |
| Metadata Downloads: | 0 |
| Dataset Downloads: | 0 |
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