Author: De Arcangelis, D.
Paper Title Page
MOPAB410 Preliminary Studies of a Compact VHEE Linear Accelerator System for FLASH Radiotherapy 1229
 
  • L. Giuliano, F. Bosco, M. Carillo, D. De Arcangelis, L. Faillace, L. Ficcadenti, M. Migliorati, A. Mostacci, L. Palumbo
    Sapienza University of Rome, Rome, Italy
  • D. Alesini, M. Behtouei, B. Spataro
    INFN/LNF, Frascati, Italy
  • G. Cuttone, G. Torrisi
    INFN/LNS, Catania, Italy
  • V. Favaudon, S. Heinrich, A. Patriarca
    Institut Curie - Centre de Protonthérapie d’Orsay, Orsay, France
  
  Funding: The work is supported by La Sapienza University, research grant "grandi progetti di ricerca 2020".
The Flash Radio Ther­apy is a rev­o­lu­tion­ary new tech­nique in the can­cer cure: it spares healthy tis­sue from the dam­age of the ion­iz­ing ra­di­a­tion main­tain­ing the tumor con­trol as ef­fi­cient as in con­ven­tional ra­dio­ther­apy. To allow the im­ple­men­ta­tion of the FLASH Ther­apy con­cept into ac­tual clin­i­cal use, it is nec­es­sary to have a lin­ear ac­cel­er­a­tor able to de­liver the very high dose and very high dose rate (>106 Gy/s) in a very short ir­ra­di­a­tion time (beam on time < 100ms). Low en­ergy S-band Linacs (up to 7 MeV) are being used in Ra­dio­bi­ol­ogy and pre-clinic ap­pli­ca­tions but in order to treat deep tu­mors, the en­ergy of the elec­trons should achieve the range of 60-100 MeV. In this paper, we ad­dress the main is­sues in the de­sign of a com­pact C band (5.712 GHz) elec­tron linac-VHEE for FLASH Radio Ther­apy. We pre­sent pre­lim­i­nary stud­ies on C-band struc­tures at La Sapienza and at INFN-LNS, aim­ing to reach a high ac­cel­er­at­ing gra­di­ent and high cur­rent nec­es­sary to de­liver a dose >1 Gy/pulse, with very short elec­tron pulse. 		 
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB410  
About • paper received ※ 19 May 2021       paper accepted ※ 09 June 2021       issue date ※ 21 August 2021  
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WEPAB225 Transverse and Longitudinal Single Bunch Instabilities in FCC-ee 3153
 
  • E. Carideo, D. Quartullo, F. Zimmermann
    CERN, Meyrin, Switzerland
  • D. De Arcangelis
    Sapienza University of Rome, Rome, Italy
  • M. Migliorati, M. Zobov
    INFN/LNF, Frascati, Italy
  
  Im­prov­ing the ac­cu­racy of the im­ped­ance model of an ac­cel­er­a­tor is im­por­tant for keep­ing beam in­sta­bil­i­ties and power loss under con­trol. Here, by means of the Py­HEAD- TAIL track­ing code, we first re­view the lon­gi­tu­di­nal mi- crowave in­sta­bil­ity thresh­old for FCC-ee by tak­ing into ac- count the lon­gi­tu­di­nal im­ped­ance model eval­u­ated so far. More­over, we pre­sent the re­sults of beam dy­nam­ics sim­ula- tions, in­clud­ing both the lon­gi­tu­di­nal and trans­verse wake- fields due to the re­sis­tive wall, in order to eval­u­ate the in­flu- ence of the bunch length on the trans­verse mode cou­pling in­sta­bil­ity. The re­sults of the trans­verse beam dy­nam­ics are also com­pared with the Vlasov solver DEL­PHI.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB225  
About • paper received ※ 10 May 2021       paper accepted ※ 01 July 2021       issue date ※ 18 August 2021  
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