Beam Emittance Measurement for PLS-II Linac

The PLS-II has a 100 MeV pre-injector for the 3 GeV Linac. A thermionic gun produces electron charge of 200 pC with a bunch duration of 500 ps by a 250 ps triggering pulser. At the pre-injector, one of the most important beam parameters to identify the beam quality is a transverse emittance of elect...

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Bibliographic Details
Published in:arXiv.org 2016-06
Main Authors: Lee, Byung-Joon, Hwang, Ilmoon, Chong do Park, Chunjarean, SomJai, Kim, Changbum
Format: Article
Language:English
Subjects:
Electrons
Emittance
Injectors
Parameter identification
Quadrupoles
Online Access:Get full text
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Summary:The PLS-II has a 100 MeV pre-injector for the 3 GeV Linac. A thermionic gun produces electron charge of 200 pC with a bunch duration of 500 ps by a 250 ps triggering pulser. At the pre-injector, one of the most important beam parameters to identify the beam quality is a transverse emittance of electron bunches. Therefore we measure the beam emittance and twiss functions at 100 MeV in order to match the beam optics to beam transport line and go through it to the storage ring. To get the transverse emittance measurement, well-known technique, quadrupole scan, is used at the pre-injector. The emittance were 0.591 mm-mrad in horizontal and 0.774 mm-mrad in vertical direction.
ISSN:2331-8422
DOI:10.48550/arxiv.1606.09486