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@inproceedings{chen:ipac2021-tupab129,
author = {Q.S. Chen and T. Hu and K.F. Liu and B. Qin and Y.Q. Xiong},
title = {{Beam Based Alignment in a Compact THz-FEL Facility}},
booktitle = {Proc. IPAC'21},
pages = {1692--1695},
eid = {TUPAB129},
language = {english},
keywords = {quadrupole, FEL, alignment, linac, undulator},
venue = {Campinas, SP, Brazil},
series = {International Particle Accelerator Conference},
number = {12},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {08},
year = {2021},
issn = {2673-5490},
isbn = {978-3-95450-214-1},
doi = {10.18429/JACoW-IPAC2021-TUPAB129},
url = {https://jacow.org/ipac2021/papers/tupab129.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-TUPAB129},
abstract = {{In this paper, we presented the beam based alignment results in a compact THz-FEL facility. The alignment was divided into two sections, the transport line and the optical line. In the transport line, all the five quadrupoles upstream of the undulator were adjusted one by one to fit the electron beam from the traveling wave linac. In the optical line, a set of auxiliary coils were winded on the yokes of the quadrupole downstream of the double bend achromat (DBA) to produce a vertical steering force. Another combined steering magnet, together with the auxiliary coils, corrected the beam orbit in the optical line. With the dispersion free test, the displacement between the magnetic centers of the quads and the beam orbit was less than 0.1mm.}},
}