MDI

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2019-03-19
10:07
OpenAccess [PUBDB-2019-01602] Dissertation / PhD Thesis

Higher-Order-Mode-based Beam Phase and Beam Position Measurements in Superconducting Accelerating Cavities at the European XFEL
183 pp. () [10.3204/PUBDB-2019-01602] = Dissertation, University of Manchester, 2017  GO
Instrumentation of higher order modes (HOMs) excited in accelerating cavities for beam phase and position inference provides a noninvasive and economical beam diagnostic. The principles and techniques for this purpose are investigated for TESLA (TeV Energy Superconducting Linear Accelerator) cavities at the injector part of the newly built European XFEL and at FLASH, two free electron laser facilities based on the TESLA technology.I have designed and instrumented unconventional beam phase monitors based on monopole modes in TESLA cavities and demonstrated a routine resolution of 0.1° with a broadband setup [...]
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2019-03-06
11:58
OpenAccess [PUBDB-2019-01356] Bachelor Thesis

Untersuchung der Kathoden- und Haltergeometrie einer RF-Elektronenquelle aufgrund des Rogowski-Profils
51 pp. () [10.3204/PUBDB-2019-01356] = Bachelorarbeit, University of Hamburg, 2018  GO
The aim of this thesis was to reduce the electrical field strength at the opening of a gap between the cathode and the resonator cavity of the radio frequency electron gun of the European X-FEL. For this purpose computer simulations of the electromagnetic field inside a 3D-model of the electron gun were carried out for different edge profiles at the gap opening. [...]
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2018-12-19
12:01
OpenAccess [PUBDB-2018-05732] Contribution to a conference proceedings

The Diagnostic System at the European XFEL; Commissioning and First User Operation
7th International Beam Instrumentation Conference, IBIC 2018, ShanghaiShanghai, China, 9 Sep 2018 - 13 Sep 20182018-09-092018-09-13 Geneva, Switzerland : JACoW 7 pp. () [10.3204/PUBDB-2018-05732]  GO
The European XFEL is now commissioned and user operation has started. Long bunch trains up to 500 bunches are established. [...]
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2018-12-12
11:16
OpenAccess [PUBDB-2018-05423] Journal Article
et al
Direct measurement of focusing fields in active plasma lenses
Active plasma lenses have the potential to enable broad-ranging applications of plasma-basedaccelerators owing to their compact design and radially symmetric kT/m-level focusing fields, facilitatingbeam-quality preservation and compact beam transport. We report on the direct measurement of magneticfield gradients in active plasma lenses and demonstrate their impact on the emittance of a charged particlebeam. [...]
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2018-12-10
09:53
[PUBDB-2018-05315] Book/Report/Internal Report

A Proposal for using wire scanners at the LINAC test facilities
[TESLA Report 1994-15]
TESLA Reports 9 pp. ()
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2018-12-04
12:41
OpenAccess [PUBDB-2018-05180] Contribution to a conference proceedings/Contribution to a book
et al
Energy Beam Position Monitor Button Array Electronics for the European XFEL
9th International Particle Accelerator Conference, IPAC'18, VancouverVancouver, Canada, 29 Apr 2018 - 4 May 20182018-04-292018-05-04 Geneva, Switzerland : JACoW Publishing 1927-1928 () [10.18429/JACOW-IPAC2018-WEPAF049]  GO
The European XFEL(X-Ray Free Electron Laser) at DESY(Deutsches Elektronen-Synchrotron) in Hamburg/Schenefeld started commissioning in early 2017. Before the pulsed electron beam is accelerated to its final energy of 14 GeV, the energy of the bunch can be compressed in three bunch compression chicanes at 130 MeV, 700 MeV and 2400 MeV. [...]
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2018-11-30
09:08
[PUBDB-2018-05043] Book/Report/Internal Report
et al
Energy propagation through the TESLA channel: The Regime of the first waveguide mode
[TESLA Report 1995-07]
TESLA Reports 15 pp. ()
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2018-11-29
12:44
[PUBDB-2018-04992] Book/Report/Internal Report
et al
Energy propagation through the TESLA channel: Measurements with two waveguide modes
[TESLA Report 1996-07]
TESLA Reports 16 pp. ()
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2018-11-27
07:39
[PUBDB-2018-04832] Book/Report/Internal Report
et al
Filling and beam loading in TESLA superstructures
[TESLA Report 1998-14]
Seminar, Meeting location,
Contributions / Info
TESLA Reports 10 pp. ()
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2018-11-26
14:57
[PUBDB-2018-04788] Book/Report/Internal Report

Estimation of the signal from the wire scanner in the TTF
[TESLA Report 1999-08]
TESLA Reports 11 pp. ()
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