MODEL BENCHMARK WITH EXPERIMENT AT THE SNS LINAC

Conference · Fri Jan 01 00:00:00 EST 2016

OSTI ID:1302929

Shishlo, Andrei P ^[1]; Aleksandrov, Alexander V ^[1]; Liu, Yun ^[1]; Plum, Michael A ^[1]

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1. ORNL

The history of attempts to perform a transverse match-ing in the Spallation Neutron Source (SNS) superconduct-ing linac (SCL) is discussed. The SCL has 9 laser wire (LW) stations to perform non-destructive measurements of the transverse beam profiles. Any matching starts with the measurement of the initial Twiss parameters, which in the SNS case was done by using the first four LW stations at the beginning of the superconducting linac. For years the consistency between data from all LW stations could not be achieved. This problem was resolved only after significant improvements in accuracy of the phase scans of the SCL cavities, more precise analysis of all available scan data, better optics planning, and the initial longitudi-nal Twiss parameter measurements. The presented paper discusses in detail these developed procedures.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1302929
• Resource Relation: Conference: HB2016, Malmo, Sweden, Sweden, 20160703, 20160708
• Country of Publication: United States
• Language: English

Related Subjects

Linac model
Superconducting Linac