BROWSE

Related Researcher

Author

Chung, Moses
Intense Beam and Accelerator Laboratory (IBAL)
Research Interests
  • Accelerator, beam physics and diagnostics, plasma

ITEM VIEW & DOWNLOAD

Use of a corrugated beam pipe as a passive deflector for bunch length measurements

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Use of a corrugated beam pipe as a passive deflector for bunch length measurements
Author
Seok, JiminChung, MosesKang, Heung-SikMin, Chang-KiNa, Donghyun
Issue Date
201802
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW ACCELERATORS AND BEAMS, v.21, no.2, pp.022801 -
Abstract
We report the experimental demonstration of bunch length measurements using a corrugated metallic beam pipe as a passive deflector. The corrugated beam pipe has been adopted for reducing longitudinal chirping after the bunch compressors in several XFEL facilities worldwide. In the meantime, there have been attempts to measure the electron bunch's longitudinal current profile using the dipole wakefields generated in the corrugated pipe. Nevertheless, the bunch shape reconstructed from the nonlinearly deflected beam suffers from significant distortion, particularly near the head of the bunch. In this paper, we introduce an iterative process to improve the resolution of the bunch shape reconstruction. The ASTRA and ELEGANT simulations have been performed for pencil beam and cigar beam cases, in order to verify the effectiveness of the reconstruction process. To overcome the undesirable effects of transverse beam spreads, a measurement scheme involving both the corrugated beam pipe and the spectrometer magnet has been employed, both of which do not require a dedicated (and likely very expensive) rf system. A proof-of-principle experiment was carried out at Pohang Accelerator Laboratory (PAL) Injector Test Facility (ITF), and its results are discussed together with a comparison with the rf deflector measurement.
URI
Go to Link
DOI
http://dx.doi.org/10.1103/PhysRevAccelBeams.21.022801
ISSN
2469-9888
Appears in Collections:
SNS_Journal Papers
Files in This Item:
000424633400003.pdfDownload

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qr_code

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU