Status of the PXIE Low Energy Beam Transport Line

Lionel Prost, Richard Andrews, Alex Chen, Richard D'Arcy, Bruce Hanna, Victor Scarpine, Alexander Shemyakin, Jim Steimel, Petit-Jean-Genaz, Christine (Ed.), Arduini, Gianluigi (Ed.), Michel, Peter (Ed.), Schaa, Volker RW (Ed.)
A CW-compatible, pulsed H⁻ superconducting RF linac (a.k.a. PIP-II) is envisaged as a possible path for upgrading Fermilab's injection complex [1]. To validate the concept of the front-end of such machine, a test accelerator (a.k.a. PXIE) [2] is under construction. The warm part of this accelerator comprises a 10 mA DC, 30 keV H⁻ ion source, a 2m-long LEBT, a 2.1 MeV CW RFQ, and a MEBT that feeds the first cryomodule. In addition to operating in the nominal CW mode, the LEBT should be able to
more » ... oduce a pulsed beam for both PXIE commissioning and modelling of the front-end nominal operation in the pulsed mode. Concurrently, it needs to provide effective means of inhibiting beam as part of the overall machine protection system. A peculiar feature of the present LEBT design is the capability of using the ~1m-long section immediately preceding the RFQ in two regimes of beam transport dynamics: neutralized and space charge dominated. This paper introduces the PXIE LEBT, reports on the status of the ion source and LEBT installation, and presents the first beam measurements.
doi:10.18429/jacow-ipac2014-mopri086 fatcat:kvrvelgs75htnmgupyjwlk7am4