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- M. Comunian, F. Grespan, A. Pisent
INFN/LNL, Legnaro (PD), Italy
- R. De Prisco
Lund University, Lund, Sweden
- M. Eshraqi
ESS, Lund, Sweden
- P. Mereu
INFN-Torino, Torino, Italy
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In the present design of the European Spallation Source (ESS) accelerator, the Drift Tube Linac (DTL) will accelerate a proton beam of 50 mA pulse peak current from 3 to 80 MeV. It is designed to operate at 352.2 MHz, with a duty cycle of 4% (3 ms pulse length, 14 Hz repetition period). Permanent magnet quadrupoles (PMQs) are used as focusing elements in a FODO lattice scheme, which leaves space for steerers and diagnostics . In this paper beam dynamics studies and preliminary RF design are shown, including constraints in terms of quadrupole dimensions, total length, field stability, RF power, peak electric field.
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