Optimization of Undulator Parameters for 125 GeV Drive Beam
| Autor: | Formela, Manuel, Moortgat-Pick, Gudrid, Riemann, Sabine, Ushakov, Andriy |
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| Rok vydání: | 2019 |
| Předmět: |
Accelerator Physics (physics.acc-ph)
energy spectrum [synchrotron radiation] thesis FOS: Physical sciences ILC Coll beam [electron] design [undulator] undulator [magnet] particle source [positron] Physics::Accelerator Physics Physics - Accelerator Physics spectral [density] numerical calculations performance |
| DOI: | 10.48550/arxiv.1902.07786 |
| Popis: | In the baseline design of the International Linear Collider (ILC) an undulator-based source is foreseen for the positron source in order to match the physics requirements. The baseline parameters are optimized for the ILC at sqrt(s)=500 GeV, that means an electron drive beam of 250 GeV. Precision measurements in the Higgs sector, however, require measurements at sqrt(s)=250 GeV, i.e. running with the electron drive beam only at 125 GeV, which imposes a challenge for achieving a high yield. Therefore the baseline undulator parameters have to be optimized as much as possible within their technical performances. In this bachelor thesis we therefore present a theoretical study on the radiation spectra of a helical undulator, based on the equation for the radiated synchrotron energy spectral density per solid angle per electron in the relativistic, far-field and point-like charge approximation. From this starting point the following undulator properties are examined: the deposited power in the undulator vessel, which can disrupt the functionality of the undulator magnets, the protective property of a mask on this disturbances and the number of positrons produced by the synchrotron radiation in a Ti6Al4V target. Those quantities were evaluated for various values for parameters as undulator period, undulator length and magnetic flux in order to find optimal baseline parameter sets for sqrt(s)=250 GeV. Comment: 15 pages, Talk presented at the International Workshop on Future Linear Colliders (LCWS2018), Arlington, Texas, 22-26 October 2018 |
| Databáze: | OpenAIRE |
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