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000347659 0247_ $$2doi$$a10.18429/JACOW-IPAC2021-THPAB157
000347659 0247_ $$2datacite_doi$$a10.15120/GSI-2023-01077
000347659 037__ $$aGSI-2023-01077
000347659 041__ $$aEnglish
000347659 1001_ $$0P:(DE-Ds200)OR10248$$aGalnander, Björn Patrik$$b0$$eCorresponding author
000347659 1112_ $$aThe 12th International Particle Accelerator Conference$$cCampinas$$d2021-05-24 - 2021-05-28$$gIPAC21$$wBrazil
000347659 245__ $$aStudying X-Ray Spectra of the SIS18 Electrostatic Septa to Measure Their Electric Field
000347659 260__ $$bJACoW Publishing, Geneva, Switzerland$$c2021
000347659 29510 $$aProceedings of the 12th International Particle Accelerator Conference, IPAC2021, Campinas, SP, Brazil
000347659 300__ $$a3 pages0.803 MB
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000347659 500__ $$aPublished by JACoW Publishing under the terms of the Creative Commons Attribution 3.0 International license.
000347659 520__ $$aThe synchrotron SIS18 at GSI uses resonant extraction for slow beam extraction on the order of seconds. For some time, there has been an unexplained discrepancy of the slow extraction with a lower extraction efficiency than expected at the highest beam energies. Recent machine studies have indicated that the deflection by the electrostatic septum might be less than the nominal 2.5 mrad, leading to increased losses at the magnetic septum. In this paper, we pursue an idea to directly measure the voltage of the electrode gap by utilizing the fact that dark current electrons accelerated in the gap of the electrostatic extraction septum generate Bremsstrahlung X-rays when hitting the anode. The high-energy cut-off of the X-ray spectra then corresponds to the voltage of the electrode gap. Measurements of the X-ray spectra at the extraction septum of SIS18 have been performed using a solid-state CdTe detector. This technique provides an in-situ measurement of the voltage applied to the electrostatic extraction channel and has proven to be a useful diagnostics tool.
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000347659 650_7 $$2Other$$aAccelerator Physics
000347659 650_7 $$2Other$$aMC7: Accelerator Technology
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000347659 7001_ $$0P:(DE-Ds200)OR0634$$aKozlova, Ekaterina$$b1$$ugsi
000347659 7001_ $$0P:(DE-Ds200)OR0900$$aOndreka, David$$b2$$ugsi
000347659 7001_ $$0P:(DE-HGF)0$$aSokolov, Alexej$$b3
000347659 7001_ $$0P:(DE-Ds200)OR1222$$aSpiller, Peter$$b4$$ugsi
000347659 7001_ $$0P:(DE-Ds200)OR1229$$aStadlmann, Jens$$b5$$ugsi
000347659 773__ $$a10.18429/JACOW-IPAC2021-THPAB157
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