Contributions to a conference proceedings

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2019-10-15
11:03
arXiv [PUBDB-2019-03675] Report/Contribution to a conference proceedings

Deep learning detection of transients (ICRC-2019)DESY
[DESY-19-026; arXiv:1908.01615]
36th International Cosmic Ray Conference, ICRC2019, MadisonMadison, USA, 24 Jul 2019 - 1 Aug 20192019-07-242019-08-01 8 pages ()
The next generation of observatories will facilitate the discovery of new types of astrophysical transients. The detection of such phenomena, whose characteristics are presently poorly constrained, will hinge on the ability to perform blind searches. [...]
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2019-10-14
16:25
[PUBDB-2019-03673] Contribution to a conference proceedings
et al
Absorbed Radiation Doses on the European XFEL Undulator Systems During Early User Experiments
39th International Free Electron Laser Conference, FEL19, HamburgHamburg, Germany, 26 Aug 2019 - 30 Aug 20192019-08-262019-08-30 5 pp. ()
The European XFEL GmbH (EuXFEL) is a FEL userfacility based on a superconducting accelerator with highduty cycle. Three movable gap SASE Undulator Systems using hybrid NdFeB permanent magnet segments are in operation. [...]
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2019-10-14
16:19
[PUBDB-2019-03672] Contribution to a conference proceedings
et al
Multi-Beamline Operation at the European XFEL
39th International Free Electron Laser Conference, FEL19, HamburgHamburg, Germany, 26 Aug 2019 - 30 Aug 20192019-08-262019-08-30 JACoW Publishing, Geneva, Switzerland 4 pp. ()
The European XFEL uses a unique beam distribution scheme to direct electron bunches to its three undulator lines.The accelerator delivers up to 600 microsecond long bunchtrains, out of which parts or individual bunches can be selectedfor photon production in any of the FELs. This contribution gives a brief overview of the kicker-septum scheme facilitating this and highlights how even complex bunch patterns can easily be configured via the timing system..
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2019-10-11
17:19
[PUBDB-2019-03663] Contribution to a conference proceedings
et al
Identification and Mitigation of Smoke-Ring Effects in Scintillator-Based Electron Beam Images at the European XFEL
39th International Free Electron Laser Conference, FEL19, HamburgHamburg, Germany, 26 Aug 2019 - 30 Aug 20192019-08-262019-08-30 JACoW Publishing, Geneva, Switzerland 6 pp. ()
Standard transverse beam profile measurements at the European XFEL are based on scintillating screen monitors using LYSO:Ce as scintillator material. While it is possible to resolve beam sizes down to a few micrometers with this material, the experience during the XFEL commissioning showed that the measured emittance values were significantly larger than the expected ones. [...]
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2019-10-11
17:13
[PUBDB-2019-03662] Contribution to a conference proceedings
et al
Status of the PETRA IV project
10th International Particle Accelerator Conference, IPAC'19, MelbourneMelbourne, Australia, 19 May 2019 - 24 May 20192019-05-192019-05-24 JACoW Publishing, Geneva, Switzerland 1404-1407 () [10.18429/JACOW-IPAC2019-TUPGW011]  GO
Since 2016 DESY has been pursuing R towards upgrading its PETRA synchrotron light source to a fourth-generation machine, PETRA IV, which is expected to start operation in 2027. The conceptual design of a 6 GeV seven-bend-achromat-based lattice with an approx. [...]
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2019-10-11
16:22
[PUBDB-2019-03661] Contribution to a conference proceedings
et al
Overview of the ARES Bunch Compressor at SINBAD
10th International Particle Accelerator Conference, IPAC'19, MelbourneMelbourne, Australia, 19 May 2019 - 24 May 20192019-05-192019-05-24 JACoW Publishing, Geneva, Switzerland 902-905 () [10.18429/JACOW-IPAC2019-MOPTS025]  GO
Bunch compressors are essential for the generation of short bunches with applications in e.g. colliders, free electron lasers, and advanced accelerator concepts. [...]
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2019-10-11
16:13
[PUBDB-2019-03660] Contribution to a conference proceedings
et al
Collimator Performance Study at the European XFEL
10th International Particle Accelerator Conference, IPAC'19, MelbourneMelbourne, Australia, 19 May 2019 - 24 May 20192019-05-192019-05-24 JACoW Publishing, Geneva, Switzerland 4 pp. () [10.18429/JACOW-IPAC2019-TUPRB019]  GO
Beam halo collimation is of great importance for the high repetition rate operation at the European XFEL and for the future CW machines. At the European XFEL several different types of collimators are installed at different locations of the beam line, which include the gun collimators, the bunch compressor collimators, and the main and supplementary collimators in the collimation section. [...]
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2019-10-11
12:44
[PUBDB-2019-03655] Contribution to a conference proceedings
et al
ESS Beam Position and Phase Monitor System
8th International Beam Instrumentation Conference, IBIC2019, MalmöMalmö, Sweden, 8 Sep 2019 - 12 Sep 20192019-09-082019-09-12 JACoW Publishing, Geneva, Switzerland 5 pp. ()
The European Spallation Source (ESS) is a neutron facility under construction in Lund, Sweden, and established as a European collaboration between different member countries. The machine is a 2 GeV proton LINAC with a nominal beam current of 62.5 mA, 2.86 ms of pulselength and a bunch repetition rate of 352 MHz. [...]
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2019-10-11
12:36
[PUBDB-2019-03654] Contribution to a conference proceedings

First Tests Using Sipm Based Beam Loss Monitors at the European XFEL
8th International Beam Instrumentation Conference, IBIC2019, MalmöMalmö, Sweden, 8 Sep 2019 - 12 Sep 20192019-09-082019-09-12 JACoW Publishing, Geneva, Switzerland 4 pp. ()
The European XFEL uTCA based Beam Loss Monitor System (BLM) is composed of about 470 monitors using photomultiplier tubes (PMTs). BLMs installed in the SASE undulator intersections show high signals at electron energy higher 16 GeV or photon energy higher14 keV due to background synchrotron radiation which directly affects the PMT. [...]
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2019-10-11
12:32
[PUBDB-2019-03653] Contribution to a conference proceedings

Pile-Up Effect of Cold Button BPMs in the European XFEL Accelerator
8th International Beam Instrumentation Conference, IBIC2019, MalmöMalmö, Sweden, 8 Sep 2019 - 12 Sep 20192019-09-082019-09-12 JACoW Publishing, Geneva, Switzerland 4 pp. ()
The European XFEL facility is in operation with a maximum of 2700 bunches in one train. The highest bunch repetition rate is 4.5 MHz; this corresponds to a minimum time separation of 222 ns. [...]
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