Fermilab, Batavia
Project-X is a proposed multi-MW proton facility at Fermilab. Based on a new superconducting H- linear accelerator, it would provide the foundation for a flexible long term intensity frontier physics research program. Two machine configurations have been developed. The first one involves a single 8 GeV, pulsed linac (9 mA peak, 1 ms @ 5 Hz pulses) followed by accumulation and acceleration to 60-120 GeV in the existing Main Injector synchrotron. The second -and currently favoured one- replaces the single pulsed linac by a 3 GeV (10 mA peak, 1 mA average @ 325 MHz), continuous wave linac followed, up to 8 GeV, by either a rapid cycling synchrotron or a second (pulsed) linac. We present here an overview of beam optics for the 3 GeV CW linac. Constraints related to cryostat configuration, field limits in cavities, particle loss mechanisms, and the need for warm instrumentation sections are discussed. Alignment, field amplitude and phase tolerances are also addressed.
ESS Bilbao, Bilbao
University of Warwick, Coventry
Bilbao, Faculty of Science and Technology, Bilbao
Fermilab, Batavia
STFC/RAL/ISIS, Chilton, Didcot, Oxon
ESS-Bilbao, Zamudio
Imperial College of Science and Technology, Department of Physics, London
Elytt Energy, Madrid
STFC/RAL, Chilton, Didcot, Oxon
The Proposed Multi-specimen Low Energy Transport System (LEBT) consists of a series of solenoids with tunable magnetic fields, used to match the characteristics of the beam to those imposed by the RFQ input specification. The design of the LEBT involves selecting the number of solenoids to use and their fixed positions, so that the set of fields that provides the desired matching can be found for any given conditions (different currents, input emittances, etc). In this work we present the first simulations carried out to design the Bilbao Accelerator LEBT, which were peformed using several codes (Track, GPT, Trace2D). The best configuration is discussed and evaluated in terms of the degree of matching to the RFQ input requirements.