| Paper | Title | Other Keywords | Page | ||
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| TUPMN014 | Commissioning of the 100 MeV Racetrack Microtron of the Metrology Light Source | gun, storage-ring, electron, emittance | 944 | ||
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Funding: Physikalisch-Technische Bundesanstalt, Abbestr. 2 - 12, 10587 Berlin, Germany |
In 2003, the Metrology Light Source (MLS) was approved, a dedicated low energy electron storage ring of the Physikalisch-Technische-Bundesanstalt (PTB), the German national metrology institute. Design, construction and operation of the MLS are realized by BESSY, based on the PTB requirements for a permanent accessible radiometry source, optimized for the spectral range between UV up to VUV. The MLS is tunable in energy between 200 MeV and 600 MeV. Based on the experiences at BESSY, a highly stable and reliable Race Track Microtron for injection was realized by Danfysik. The commissioning of the 100 MeV microtron at the MLS started in December 2006. The concept and construction as well as the main parameters of the microtron are introduced. |
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| THPMN003 | Commissioning of the 100 keV Beam Stage of the Injector Linac of the IFUSP Microtron | linac, cathode, alignment, emittance | 2710 | ||
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Funding: Work supported by FAPESP and CNPq |
The injector linac consists of a beam conforming stage, with chopper and buncher systems, and two acceleration structures, the first one with variable β, and the second one divided into two parts with different β. There are two 3-mm diameter collimators, the first at the entrance to the first chopper cavity and the second at the entrance to the first acceleration structure. The beam focalization is made by solenoids, and correcting coils are provided for steering. In this work we describe the commissioning of the optical lattice of the conforming beam stage. The first beam images are shown. |
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| THPAN063 | Analytic Description of the Phase Slip Effect in Race-Track Microtrons | injection, electron, longitudinal-dynamics, synchrotron | 3369 | ||
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Design of modern race-track microtrons (RTMs) requires better understanding of the longitudinal beam dynamics in these machines, in particular of the phase slip effect which is important for low energy beams. We generalize an analytical approach for the description of the synchronous particle motion and synchrotron oscillations, developed in our previous papers, by including the fringe fields of the RTM end magnets. Explicit, though approximate, formulas are derived and an algorithm for improving their accuracy is formulated. The efficiency of the analytic description is checked numerically, in particular by tracking simulations using the RTMTRace code. Explicit examples of low energy injection schemes and applications of this formalism for the injection phase fixing are given.
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| FRPMN010 | Emittance Measurements at the 100 keV Beam Stage of the Injector Linac of the IFUSP Microtron | emittance, linac, cathode, acceleration | 3898 | ||
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Funding: Work supported by FAPESP and CNPq |
In this work we describe the determination of the beam emittance for the 100-keV injector of the IFUSP racetrack microtron. We measured the beam spot diameter at a fluorescent screen located 40 cm after a 3-mm diameter collimator (placed at the entrance to the first chopper cavity). A solenoid lens located upstream to the collimator was used to produce a beam waist at the fluorescent screen position. We used the collimator and the beam waist sizes to calculate the emittance for 80 and 90 keV beams. Results showed no dependence with energy, indicating that the collimator is limiting the beam emittance at 2.32(5) ??mm?mrad. |
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