MDI 2

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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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2018-11-07
12:49
[PUBDB-2018-04267] Book/Report/Internal Report
et al
Behavior of the TTF2 RF gun with long pulses and high repetition rates
[TESLA Report 2003-33]
TESLA Reports 11 pp. ()
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2018-08-31
09:33
[PUBDB-2018-03294] Report
et al
Silica Aerogel Radiators for Bunch LengthMeasurements
[TESLA-FEL 2004-01]
21 pp. ()
Cherenkov radiators based on Silica aerogel are used to measure the electron bunchlength at the photo injector test facility at DESY Zeuthen (PITZ). The energy rangeof those electrons is 4-5 MeV. [...]
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2016-10-19
12:47
OpenAccess [PUBDB-2016-04302] Report/Journal Article

Planck-Scale Gravity Test at PETRA
[DESY-16-029]
Quantum or torsion gravity models predict unusual properties of spacetime at very short distances. In particular, near the Planck length, around 10$^{−35}$ m, empty space may behave as a crystal, singly or doubly refractive. [...]
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2016-08-31
11:52
OpenAccess [PUBDB-2016-03379] Contribution to a conference proceedings/Contribution to a book
et al
Technical Design Considerations About the SINBAD-ARES Linac
7th International Particle Accelerator Conference, IPAC16, BusanBusan, Korea, 8 May 2016 - 13 May 20162016-05-082016-05-13 112-114 ()
The SINBAD facility (Short and INnovative Bunches and Accelerators at Desy) is foreseen to host various experiments in the field of production of ultra-short electron bunches and novel high gradient acceleration technique. The SINBAD linac, also called ARES (Accelerator Research experiment at SINBAD), will be a conventional S-band linear RF accelerator allowing the production of low charge (0.5 pC - few pC) ultra-short electron bunches (FWHM, length <= 1 fs - few fs) having 100 MeV energy. [...]
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2016-08-22
10:34
OpenAccess [PUBDB-2016-03273] Preprint/Report

Planck-scale Gravity test at PETRA - Letter of Intent
[arXiv:1602.06251; DESY-16-029]
Quantum or torsion gravity models predict unusual properties of space-time at very short distances. In particular, near the Planck length, around $10^{-35}m$, empty space may behave as a crystal, singly or doubly refractive. [...]
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2016-02-29
10:54
OpenAccess [PUBDB-2016-01182] Preprint/Report

Experimental Hint for Gravitational CP Violation
[DESY 16-014]
 GO
An equality of particle and antiparticle gravitational interactionsholds in general relativity and is supported by indirect observations. Gravity dependence on rotation or spin directionis experimentally constrained only at low energies.Here a method based on high energy Compton scattering is developedto measure the gravitational interaction of accelerated charged particles.Within that formalism the Compton spectra measured at HERA rule out the positron's anti-gravity and hint for a gravitationalCP violation around 13 GeV energies, at a maximal level of $1.3\pm0.2\%$ for the charge and $0.68\pm0.09\%$ for the space parity.A stronger gravitational coupling to left helicity electrons relative to right helicity positrons is detected..
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2015-12-22
17:03
[PUBDB-2015-06200] Journal Article
et al
Radiation Damage of Insertion Devices at PETRA III - A perspective View from Optics and Tracking Studies,
ICFA beam dynamics newsletters 66, 45-73 ()  GO
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2015-11-19
16:25
OpenAccess [PUBDB-2015-04921] Report
et al
Radiation Damage of Insertion Devices at PETRA III – A Perspective View from Optics and Tracking Studies
[ICFA Beam Dynamics Newsletter 66]
FERMILAB, Batavia, IL, USA : ICFA Beam Dynamics Newsletters : Newsletter 66, 45-73 ()
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2015-07-20
11:17
OpenAccess [PUBDB-2015-02697] Preprint/Internal Report

Probing Positron Gravitation at HERA
[DESY-15-109; arXiv:1507.02589]
An equality of particle and antiparticle gravitational interactions holds in general relativity and is supported by indirect observations. Here I develop a method based on high energy Compton scattering to measure the gravitational interaction of accelerated charged particles. [...]

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