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BEAM DYNAMICS STUDIES OF THE ISOLDE POST-ACCELERATOR
FRASER M.A. wydawnictwo: WYD PW , rok wydania 2012, wydanie I cena netto: 47.00 Twoja cena 44,65 zł + 5% vat - dodaj do koszyka Beam Dynamics Studies of the ISOLDE Post-Accelerator for the High Intensity and Energy
Upgrade
The High Intensity and Energy (HIE) project represents a major upgrade of the ISOLDE
(On-Line Isotope Mass Separator) nuclear facility at CERN with a mandate to significantly
increase the energy, intensity and quality of the radioactive nuclear beams provided to
the European nuclear physics community for research at the forefront of topics such as
nuclear structure physics and nuclear astrophysics. The HIE-ISOLDE project focuses on the
upgrade of the existing Radioactive ion beam EXperiment (REX) post-accelerator with the
addition of a 40MVsuperconducting linac comprising 32 niobium sputter-coated copper
quarter-wave cavities operating at 101.28 MHz and at an accelerating gradient close to 6
MV/m. The energy of post-accelerated radioactive nuclear beams will be increased from the
present ceiling of 3 MeV/u to over 10 MeV/u, with full variability in energy, and will
permit, amongst others, Coulomb interaction and few-nucleon transfer reactions to be
carried out on the full inventory of radionuclides available at ISOLDE.
In this thesis the beam dynamics of the superconducting linac is studied with a focus on
identifying and mitigating the sources of beam emittance dilution. Highlights include the
suppression of a parametric resonance, compensation of the beam-steering effect intrinsic
to quarter-wave cavities and a study of the energy change in the cavities well below their
geometric velocity using second-order transit-time factors. The studies lead to the
specification and tolerances for the linac components. An extensive investigation of REX
was also carried out involving rf and beam measurements that facilitated the benchmarking
of the beam dynamics codes that were used to design the matching sections and ensure the
compatibility of the upgrade. In addition, a solid-state diagnostics system was developed
as a tool to aid the quick and eventually automated tuning of the large number of cavities
that will accompany the upgrade.
318 pages, Paperback
Po otrzymaniu zamówienia poinformujemy, czy wybrany tytuł polskojęzyczny lub
anglojęzyczny jest aktualnie na półce księgarni.
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