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| The '''Uni'''versal '''L'''inear '''Ac'''celerator is based at the Heavy Ion Research Centre (GSI) near ], ]. Its use has produced, in the past 20 years, elements ] to ] and the creation of element ] is expected very soon. It is a ] ] that can accelerate any ], incluing nuclei of heavy atoms. This allows it to generate superheavy ]. | |||
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| However, there has been some controversy due of the lack of real practical uses for these new synthesised elements, mainly due to their short lifespans of up to 30 seconds. However, it is possible that in the future more stable isotopes of these elements will be found, and these could have practical applications. | |||
| The '''Universal Linear Accelerator (UNILAC)''' is a ] ] based at the ] near ], ]. It can provide beams of accelerated ]s of elements from ] to ] with energies of 2 to 11.4 ] / ].<ref>{{cite journal|last=Barth|first=W.|author2=Bayer, W. |author3=Dahl, L. |author4=Groening, L. |author5=Richter, S. |author6= Yaramyshev, S. |title=Upgrade program of the high current heavy ion UNILAC as an injector for FAIR|journal=Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment|year=2007|volume=577|issue=1–2|pages=211–214|doi=10.1016/j.nima.2007.02.054|bibcode = 2007NIMPA.577..211B }}</ref> | |||
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| The main branch consists of two ion source terminals followed by a ] and by an Interdigital linac ] resonating at 36 MHz up to the energy of 1.4 MeV/u. The main part then is operated by a classical ] of the Alvarez type which resonates at 108 MHz. Final energy adjustment can be performed in the last section consisting of a series of single-gap resonators. This solution was proposed for maximum flexibility in beam energy. | |||
| ] | |||
| The UNILAC is used both to send beams of heavy ions to experiments and to load the ] Heavy-Ion Synchrotron (Schwer-Ionen-Synchrotron) with high-energy ions. | |||
| Collisions between heavy-ion beams and stationary targets can be made to generate superheavy ]. | |||
| Experiments using beams from UNILAC in the past 20 years have produced elements ] to ]. | |||
| ==See also== | |||
| * ] | |||
| ==References== | |||
| {{Reflist}} | |||
| ] | |||
| ] | |||
| ⚫ | {{Accelerator-stub}} | ||
Latest revision as of 07:35, 24 August 2022
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The Universal Linear Accelerator (UNILAC) is a heavy ion linac based at the GSI Helmholtz Centre for Heavy Ion Research near Darmstadt, Germany. It can provide beams of accelerated ions of elements from hydrogen to uranium with energies of 2 to 11.4 MeV / u.
The main branch consists of two ion source terminals followed by a Radio Frequency Quadrupole and by an Interdigital linac IH linac accelerator resonating at 36 MHz up to the energy of 1.4 MeV/u. The main part then is operated by a classical linac of the Alvarez type which resonates at 108 MHz. Final energy adjustment can be performed in the last section consisting of a series of single-gap resonators. This solution was proposed for maximum flexibility in beam energy. The UNILAC is used both to send beams of heavy ions to experiments and to load the SIS18 Heavy-Ion Synchrotron (Schwer-Ionen-Synchrotron) with high-energy ions.
Collisions between heavy-ion beams and stationary targets can be made to generate superheavy transactinide elements. Experiments using beams from UNILAC in the past 20 years have produced elements 107 to 112.
See also
References
- Barth, W.; Bayer, W.; Dahl, L.; Groening, L.; Richter, S.; Yaramyshev, S. (2007). "Upgrade program of the high current heavy ion UNILAC as an injector for FAIR". Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 577 (1–2): 211–214. Bibcode:2007NIMPA.577..211B. doi:10.1016/j.nima.2007.02.054.
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