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Title: Status Of the ILC Main Linac Design

Abstract

International Linear collider (ILC) is a proposed accelerator facility which is primarily based on two 11-km long superconducting main linacs. In this paper we present recent updates on the main linac design and discuss changes made in order to meet specification outlined in the technical design report (TDR).

Authors:
 [1];  [1];  [1]
  1. Fermilab
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1421544
Report Number(s):
FERMILAB-CONF-16-746-TD
1633102
DOE Contract Number:
AC02-07CH11359
Resource Type:
Conference
Resource Relation:
Conference: 28th International Linear Accelerator Conference, East Lansing, Michigan, 09/25-09/30/2016
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Saini, Arun, Kapin, Valery, and Solyak, Nikolay. Status Of the ILC Main Linac Design. United States: N. p., 2017. Web. doi:10.18429/JACoW-LINAC2016-MOPLR008.
Saini, Arun, Kapin, Valery, & Solyak, Nikolay. Status Of the ILC Main Linac Design. United States. doi:10.18429/JACoW-LINAC2016-MOPLR008.
Saini, Arun, Kapin, Valery, and Solyak, Nikolay. Mon . "Status Of the ILC Main Linac Design". United States. doi:10.18429/JACoW-LINAC2016-MOPLR008. https://www.osti.gov/servlets/purl/1421544.
@article{osti_1421544,
title = {Status Of the ILC Main Linac Design},
author = {Saini, Arun and Kapin, Valery and Solyak, Nikolay},
abstractNote = {International Linear collider (ILC) is a proposed accelerator facility which is primarily based on two 11-km long superconducting main linacs. In this paper we present recent updates on the main linac design and discuss changes made in order to meet specification outlined in the technical design report (TDR).},
doi = {10.18429/JACoW-LINAC2016-MOPLR008},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon May 01 00:00:00 EDT 2017},
month = {Mon May 01 00:00:00 EDT 2017}
}

Conference:
Other availability
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  • The report describes the present design of the ILC Main Linac lattice. The topics covered include basic element layout, optical functions, and issues centered around the linac following of the Earth's curvature.
  • In this work we present simulation results on the effect of ground motion on the main linac performance of the proposed International Linear Collider (ILC), and then use adaptive alignment (AA) technique to correct it. The adaptive alignment technique is investigated for the ILC main linac and its limitations are studied. Then ground motion studies are performed using the simulation program LIAR and the beneficial effects of implementing AA algorithm are further discussed.
  • The Dispersion Matched Steering (DMS) method is studied in detail in the context of a curved main linac. In the absence of cavity tilts (rotations in the YZ plane), DMS provides a unique and stable solution with negligible emittance growth. If cavity tilts are about 300 {micro}rad, the algorithm is not very robust. The emittance growth through the entire linac for positrons is about 5 nm, if the system is strictly static and statistical averaging can be used to improve beam position measurements. This growth is mostly eliminated if the dispersion and its derivative at injection can be adjusted. Ifmore » anticipated ground motion, beam and klystron jitter, beam position measurement resolution are introduced (i.e. dynamical case), the emittance preservation goal is currently not achieved by DMS alone. Mitigation strategies are outlined.« less