Journal Article

PUBDB-2020-02357

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Matching small beta functions using centroid jitter and two beam position monitors

Lindstroem, C. A. (Corresponding author)DESY* ; D'Arcy, R.DESY* ; Garland, M. J.DESY* ; Gonzalez Caminal, P.DESY* ; Schmidt, B.DESY* ; Schröder, S.DESY* ; Wesch, S.DESY* ; Osterhoff, J.DESY*

2020
American Physical Society College Park, MD

This record in other databases:        

Please use a persistent id in citations: doi:10.1103/PhysRevAccelBeams.23.052802  doi:10.3204/PUBDB-2020-02357

Report No.: DESY-20-038; arXiv:2002.06022

Abstract: Matching to small beta functions is required to preserve emittance in plasma accelerators. The plasma wake provides strong focusing fields, which typically require beta functions on the mm-scale, comparable to those found in the final focusing of a linear collider. Such beams can be time consuming to experimentally produce and diagnose. We present a simple, fast, and noninvasive method to measure Twiss parameters in a linac using two beam position monitors only, relying on the similarity of the beam phase space and the jitter phase space. By benchmarking against conventional quadrupole scans, the viability of this technique was experimentally demonstrated at the FLASHForward plasma-accelerator facility.

Keyword(s): beam: phase space ; accelerator: plasma ; plasma: wake field ; beta function ; beam position: monitoring ; two-beam ; measurement methods ; beam optics ; beam focusing ; numerical calculations: Monte Carlo ; DESY Lab ; chromaticity

Note: 8 pages, 7 figures ; publication: Phys.Rev.Accel.Beams 23 5 (2020) 052802 ; ;

---

Contributing Institute(s):

1. Forschung Linear Accelerator (FLA)

Research Program(s):

1. 631 - Accelerator R & D (POF3-631) (POF3-631)
2. PWA - Research group for plasma-based accelerators (PWA-20150304) (PWA-20150304)
3. ZT-0009 - Plasma Accelerators (2018_ZT-0009) (2018_ZT-0009)

Experiment(s):

1. FLASHForward

Appears in the scientific report 2020

---

Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

---