“School of Particles And Accelerator”
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| Paper IPM / Particles And Accelerator / 13386 |
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Linac4, a 160 MeV normal-conducting H- linear accelerator, is the first step in the upgrade of the
beam intensity available from the LHC proton injectors at CERN. The Linac4 Low Energy Beam
Transport (LEBT) line from the pulsed 2 MHz RF driven ion source, to the 352 MHz RFQ (Radiofrequency
Quadrupole) has been built and installed at a test stand, and has been used to transport and
match to the RFQ a pulsed 14 mA H�?? beam at 45 keV. A temporary slit-and-grid emittance measurement
system has been put in place to characterize the beam delivered to the RFQ. In this paper
a description of the LEBT and its beam diagnostics is given, and the results of beam emittance measurements
and beam transmission measurements through the RFQ are compared with the expectation
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