Precessional extraction of the K130 cyclotron
Tämän tutkimuksen tavoitteena oli selvittää onko K130 syklotronin ekstraktio mahdollista säätää siten, että ekstraktio olisi optimaalinen. Tätä varten rakennettiin python-simulaatio yksinkertaistetusta K130 syklotronista. Simulaatioon valittiin kaksi eri hiukkasta, eri kohde-energioilla; 15N4+ 130 MeV:n kohde-energialla ja 36Ar7+ 140 MeV:n kohde-energialla. Näillä kahdelle tapaukselle simuloitiin yksittäisiä hiukkasia, käyden harmonisten kelojen säätöalueen läpi. Näistä simuloiduista tapauksista muutamia valittiin tarkempaan analyysiin, hiukkasten radan ja lopullisen energian perusteella. Analyysissä simuloitiin poikkileikkaus hiukkassuihkusta valituilla harmo nisten kelojen säädöillä, jotta säädöt joilla eniten oikella energialla olevia hiukkasia päätyy deflektorista läpi saatiin selvitettyä. Analyysin tuloksena saatiin selville, että syklotronin säätötarkkuus harmonisten kelojen osalta riittää siihen, että operaattori voi säätää suihkun ulostulon optimaaliseksi. A simulation study on the extraction from the K130 cyclotron was conducted to see if real life operation of the cyclotron could produce optimal extraction of the particle beam. A python simulation of a simplified K130 was built and two cases were selected to be simulated; 15N4+ with a target energy of 130 MeV and 36Ar7+ with a target energy of 140 MeV. For these two cases a particle was simulated for the range of the harmonic coil settings and from these settings some were selected for further analysis based on the final energy and path of the particle. The analysis included simulating the trajectories of beams with finite emittance to find the number of particles, which passed through the deflector, and their energies. From the analysis it was found that the range of the harmonic coil settings that provided optimal output was broad enough to be tunable to by the cyclotron operator, in real life conditions.
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