Experimental Performance of the Chopper for the ESS Linac

Torrisi, Giuseppe; Allegra, Luciano; Caruso, Antonio; Castro, Giuseppe; Celona, Luigi; Gallo, Giuseppe; Gammino, Santo; Leonardi, Ornella; Longhitano, Alberto; Mascali, David; Neri, Lorenzo; Passarello, Santi; Sorbello, Gino

doi:10.18429/JACoW-IPAC2018-TUPML071

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RIS citation export for TUPML071: Experimental Performance of the Chopper for the ESS Linac

TY - CONF
AU - Torrisi, G.
AU - Allegra, L.
AU - Caruso, A.C.
AU - Castro, G.
AU - Celona, L.
AU - Gallo, G.
AU - Gammino, S.
AU - Leonardi, O.
AU - Longhitano, A.
AU - Mascali, D.
AU - Neri, L.
AU - Passarello, S.
AU - Sorbello, G.
ED - Koscielniak, Shane
ED - Satogata, Todd
ED - Schaa, Volker RW
ED - Thomson, Jana
TI - Experimental Performance of the Chopper for the ESS Linac
J2 - Proc. of IPAC2018, Vancouver, BC, Canada, April 29-May 4, 2018
C1 - Vancouver, BC, Canada
T2 - International Particle Accelerator Conference
T3 - 9
LA - english
AB - At the Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud (INFN-LNS) the beam commissioning of the high intensity Proton Source for the European Spallation Source (PS-ESS) was completed in November 2017. The ESS requires a high intensity proton beam (74 mA pulsed at 14 Hz of repetition rate), with fast Beam pulse rise/fall time (< 20 μs). In order to meet the project requirement, an electrostatic chopping system has been used in the Low Energy Beam Transport (LEBT). The design of the control system was done also to be the main element of the fast beam abort system and taking into account the radiation issue in the accelerator tunnel. This paper describes the performances of the chopper. The experimentally-achieved rise/fall times of the beam pulses measured by using an AC Current Transformer (ACCT) at the end of the LEBT collimator, are presented. An experimental investigation of the effects of different amounts and types of gas injected into the LEBT (for the sake of space charge compensation) has been carried out with respect to the beam and chopper parameters.
PB - JACoW Publishing
CP - Geneva, Switzerland
SP - 1709
EP - 1711
KW - electron
KW - high-voltage
KW - linac
KW - experiment
KW - proton
DA - 2018/06
PY - 2018
SN - 978-3-95450-184-7
DO - 10.18429/JACoW-IPAC2018-TUPML071
UR - http://jacow.org/ipac2018/papers/tupml071.pdf
ER -