The Proton Improvement Plan-II (PIP-II) is a proposed upgrade for the accelerator complex at Fermilab. The central piece of PIP-II is a new superconducting radio frequency (SRF) 800 MeV linear accelerator (linac) capable of operating in both continuous wave (CW) and pulse regimes. The PIP-II linac comprises a warm front-end that includes a Hion source capable of delivering 15-mA, 30keV DC or pulsed beam, a Low Energy Beam Transport (LEBT), a 162.5 MHz, CW Radio-Frequency Quadrupole (RFQ) accelerating the ions to 2.1 MeV and, a 14-m Medium Energy Beam Transport (MEBT) before beam is injected into SRF part of the linac. This paper presents the PIP-II MEBT design and, discusses operational features and considerations that lead to existing optics design such as bunch by bunch chopping system, minimization of radiation coming to the warm front-end from the SRF linac using a concrete wall, a robust vacuum protection system etc.
[1]
B. Chase,et al.
PIP-II Injector Test Warm Front End: Commissioning Update
,
2018,
1806.05708.
[2]
G. Vandoni,et al.
Leak Propagation Dynamics for the HIE-ISOLDE Superconducting Linac
,
2014
.
[3]
V. Scarpine,et al.
DESIGN OF MEBT FOR THE PROJECT X INJECTOR EXPERIMENT AT FERMILAB
,
2013,
1301.7698.
[4]
V.P.Yakovlev,et al.
Design Considerations for an MEBT Chopper Absorber of 2.1 MeV H- at the Project X Injector Experiment at Fermilab
,
2012
.
[5]
R. Pasquinelli,et al.
Progress with PXIE MEBT Chopper
,
2012,
1301.5649.
[6]
F. Higashino,et al.
Shock Wave Attenuation by Means of Built-in Baffles in a Tube
,
2012
.