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2013-05-24
15:47
Status of higher order mode beam position monitors in 3.9 GHz superconducting accelerating cavities at FLASH   / Zhang, P (The University of Manchester / DESY / The Cockcroft Institute) ; Baboi, N (DESY) ; Jones, R M (The University of Manchester / The Cockcroft Institute) ; Flisgen, T (The University of Rostock) ; Van Rienen, U (The University of Rostock) ; Shinton, I R R (The University of Manchester / The Cockcroft Institute)
WP: 10: SC RF technology for higher intensity proton accelerators and higher energy electron linacs
Task: 10.5: HOM Distribution

Higher order mode (HOM) beam position monitors (BPM) are being developed for the 3.9 GHz third harmonic superconducting accelerating cavities at FLASH. [...]
EuCARD-CON-2013-002. - 2013.
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2013-05-24
15:05
Statistical methods for transverse beam position diagnostics with higher order modes in third harmonic 3.9 GHz superconducting accelerating cavities at FLASH   / Zhang, P (The University of Manchester / DESY / The Cockcroft Institute) ; Baboi, N (DESY) ; Jones, R M (The University of Manchester / The Cockcroft Institute)
WP: 10: SC RF technology for higher intensity proton accelerators and higher energy electron linacs
Task: 10.5: HOM Distribution

Beam-excited higher order modes (HOM) can be used to provide beam diagnostics. [...]
EuCARD-PUB-2012-012. - 2012.
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2013-05-24
15:04
Resolution study of higher-order-mode-based beam position diagnostics using custom-built electronics in strongly coupled 3.9 GHz multi-cavity accelerating module   / Zhang, P (The University of Manchester / DESY / The Cockcroft Institute) ; Baboi, N (DESY) ; Jones, R M (The University of Manchester / The Cockcroft Institute) ; Eddy, N (FNAL)
WP: 10: SC RF technology for higher intensity proton accelerators and higher energy electron linacs
Task: 10.5: HOM Distribution

Beam-excited higher order modes (HOMs) can provide remote diagnostics information of the beam position and cavity misalignment. [...]
EuCARD-PUB-2012-011. - 2012.
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2013-05-24
15:02
A study of beam position diagnostics using beam-excited dipole modes in third harmonic superconducting accelerating cavities at a free-electron laser   / Zhang, P (The University of Manchester / DESY / The Cockcroft Institute) ; Baboi, N (DESY) ; Jones, R M (The University of Manchester / The Cockcroft Institute) ; Shinton, I R R (The University of Manchester / The Cockcroft Institute) ; Flisgen, T (The University of Rostock) ; Glock, H W (The University of Rostock)
WP: 10: SC RF technology for higher intensity proton accelerators and higher energy electron linacs
Task: 10.5: HOM Distribution

We investigate the feasibility of beam position diagnostics using Higher Order Mode (HOM) signals excited by an electron beam in the third harmonic 3.9 GHz superconducting accelerating cavities at FLASH. [...]
EuCARD-PUB-2012-010. - 2012.
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2013-05-24
06:53
Study of exclusive two-photon production of W(+)W(-) in pp collisions at sqrt(s)=7 TeV and constraints on anomalous quartic gauge couplings
A search for exclusive or quasi-exclusive W(+)W(-) production by photon-photon interactions, pp to p(*)W(+)W(-)p(*), at sqrt(s)=7 TeV is reported using data collected by the CMS detector with an integrated luminosity of 5.05 inverse femtobarns. [...]
CERN-PH-EP-2013-084 ; CMS-FSQ-12-010-003. - 2013.
Additional information for the analysis - CMS AuthorList - Fulltext

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2013-05-24
04:15
Robust energy transfer mechanism between non-resonant triads in nonlinear wave systems / Bustamante, Miguel D ; Quinn, Brenda
A new generic physical mechanism of energy transfer is found which is based on the existence of non-resonant interactions in nonlinear systems. [...]
arXiv:1305.5517. - 2013.
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2013-05-24
04:15
Comments on: Antarctic Automatic Weather Station Program: 30 Years of Polar Observations / Sienicki, Krzysztof
Recently Lazzara et al. [...]
arXiv:1305.5508. - 2013.
Preprint

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2013-05-24
04:15
The Kapitza-Dirac effect in the relativistic regime / Ahrens, Sven ; Bauke, Heiko ; Keitel, Christoph H ; Müller, Carsten
A relativistic description of the Kapitza-Dirac effect in the so-called Bragg regime with two and three interacting photons is presented by investigating both numerical and perturbative solutions of the Dirac equation in momentum space. [...]
arXiv:1305.5507. - 2013.
Preprint

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2013-05-24
04:15
Rydberg atom detection of the temporal coherence of cosmic microwave background radiation / Tscherbul, Timur V ; Brumer, Paul
Rydberg atoms immersed in cold blackbody radiation are shown to display long-lived quantum coherence effects on timescales of tens of picoseconds. [...]
arXiv:1305.5491. - 2013.
Preprint

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2013-05-24
04:15
Quantum interference-enhanced deep sub-Doppler cooling of 39 K atoms beyond gray molasses / Nath, Dipankar ; Easwaran, R Kollengode ; Rajalakshmi, G ; Unnikrishnan, C S
We report enhanced sub-Doppler cooling of the bosonic atoms of 39 K facilitated by formation of dark states due to the quantum interference of excitation amplitudes in the Raman configuration for the cooling and repumping lasers tuned around the D1 resonance. [...]
arXiv:1305.5480. - 2013. - 10 p.
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