| Paper | Title | Page |
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| MOPRO115 | A Low Energy Electron-Scrapersystem for the S-DALINAC Injector | 366 |
| SUSPSNE104 | use link to see paper's listing under its alternate paper code | |
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Funding: Work supported by DFG through SFB 634 The S-DALINAC is the superconducting linear accelerator of the Institut für Kernphysik at Technische Universität Darmstadt. It delivers an electron beam with energies up to 130 MeV. In order to improve the energy spread and the energy stability of the beam for further acceleration a new scrapersystem has been developed and installed between the 10 MeV injector and the main linac. The system was designed to ensure an energy spread of dE < 10-03. After installation several tests have taken place, the results will be presented in this work. |
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| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRO115 | |
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| TUPRI098 | The New PLC based Radiation Safety Interlock System at S-DALINAC | 1802 |
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Funding: Supported by a HGS-HIRe travel grant The Superconducting Darmstadt Linear Electron Accelerator S-DALINAC has been running since 1991. It consists of an injector linac, a main linac with two recirculations and is mainly used for in-house nuclear physics experiments as well as accelerator physics and technology. Radiation safety regulations demand an interlock system during operation of the accelerator. Amongst other major projects increasing the versatility and operation stability of the S-DALINAC, the existing, hardware based, interlock system is going to be replaced in the next shutdown period. The new interlock system is based on a PLC (Programmable Logic Controller) and will provide two subsystems, a personnel interlock system as well as a machine safety interlock system. Whereas the first subsystem is to protect staff and visitors from being harmed by ionizing radiation, the latter subsystem prohibits the S-DALINAC beam transport and vacuum elements from being damaged due to malfunctioning of any components during accelerator operation. This contribution will give an overview on this new system and will show the latest status. |
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| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPRI098 | |
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| WEPME063 | Pulsed Low Level Baseband RF Control of CH-Cavities for p-Linac at FAIR | 2421 |
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Funding: This project was supported by the BMBF under grant No. 05P09RDRB5 and by the Helmholtz International Center for FAIR (HIC for FAIR) funded by the State of Hesse within its LOEWE initiative. At the Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany a high intensity antiproton beam will be produced. To provide the necessary 70 mA proton beam a dedicated proton linac (p-Linac) is under construction. The main acceleration will be provided by 9 novel CH-type cavities, of which 6 will be coupled in pairs to share the same klystron. To test the rf properties of these novel cavities, a test stand is under construction. An rf control system for the pulsed operation of these cavities has been developed at TU Darmstadt. It is based upon the digital cw rf control that is successfully in operation as part of the S-DALINAC at IKP Darmstadt. The latest developments will be presented. |
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| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPME063 | |
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| THPRI103 | Improvement of the Run-time of 35 mbar Helium Gas Pumping Units for the Superconducting Linear Accelerator S-DALINAC | 4019 |
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Funding: Work supported by DFG through SFB 634 The superconducting Darmstadt linear accelerator S-DALINAC has been designed to provide electron beams of up to 130 MeV for nuclear and astrophysical experiments. The accelerating cavities are operated in a liquid helium bath at 2 K. To achieve this temperature the cryostat has to be pumped down to a pressure of 35 mbar which was done by a system of pumping units connected in series, when the accelerator started its operation in 1991. In 2005 this system was replaced by four parallel switched pumping stations. In the first three years of their operation, the reliability of the accelerator was very poor due to repeated breakdowns of the pumping stations caused by overheating. In addition the high temperatures lead to an early decay of the gaskets used. The problem was solved by installing oil cooling systems and more appropriate shaft sleeves at the pumping stations. We will report on the technical efforts we made and thereby further increased the availability of the accelerator significantly. Also we will give a review on our experiences in maintenance procedures. |
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| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRI103 | |
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