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CERN Published Articles

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2020-09-23
04:36
A 4-Channel 10-Gbps/ch CMOS VCSEL Array Driver with on-chip Charge Pumps / Huang, X. (Hua-Zhong Normal U. ; Southern Methodist U.) ; Gong, D. (Southern Methodist U.) ; Sun, Q. (Southern Methodist U.) ; Chen, C. (Hua-Zhong Normal U. ; Southern Methodist U.) ; Guo, D. (Hua-Zhong Normal U.) ; Hou, S. (Taiwan, Inst. Phys.) ; Huang, G. (Hua-Zhong Normal U.) ; Kulis, S. (CERN) ; Liu, C. (Southern Methodist U.) ; Liu, T. (Southern Methodist U.) et al.
We present the design and test results of a 4-channel 10-Gbps/ch Vertical-Cavity Surface-Emitting Laser array driver, the cpVLAD. With on-chip charge-pumps to extend the biasing headroom for the VCSELs needed for low temperature operation and mitigation of the radiation effects. [...]
arXiv:2009.07121.- SISSA, 2020-02-24 - 5 p. - Published in : PoS: TWEPP2019 (2020) , pp. 048 Fulltext: PoS(TWEPP2019)048 - PDF; 2009.07121 - PDF;
In : TWEPP 2019 Topical Workshop on Electronics for Particle Physics, Santiago De Compostela, Spain, 2 - 6 Sep 2019, pp.048

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2020-09-22
04:49
Mid-board miniature dual channel optical transmitter MTx and transceiver MTRx / Zhao, Xiandong (Southern Methodist U.) ; Liu, Chonghan (Southern Methodist U.) ; Gong, Datao (Southern Methodist U.) ; Chen, Jinghong (Houston U.) ; Guo, D. (Southern Methodist U.) ; He, Huiqin (SZPT, Shenzhen) ; Hou, Suen (Taiwan, Inst. Phys.) ; Huang, Guangming (Hua-Zhong Normal U.) ; Li, Xiaoting (Hua-Zhong Normal U.) ; Liu, Tiankun (Southern Methodist U.) et al.
We report the development of a mid-board, TOSA and ROSA based miniature dual channel optical transmitter (MTx) and a transceiver (MTRx). The design transmission data rate is 5.12 Gbps per channel and receiving data rate 4.8 Gbps. [...]
arXiv:2009.08623.- 2016-03-24 - 7 p. - Published in : JINST 11 (2016) C03054 Fulltext: PDF;
In : Topical Workshop on Electronics for Particle Physics, Lisbon, Portugal, 28 Sep - 2 Oct 2015, pp.C03054

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2020-09-21
16:58
Evaluation, Optimization and Test of a Standard Air Dielectric Coaxial Cable Filled with Oil for Possible Use in HV Kicker Systems at CERN / Kontelis, D (Natl. Tech. U., Athens) ; Ferrero Colomo, A (CERN) ; Gonos, I (Natl. Tech. U., Athens) ; Kramer, T (CERN) ; Stadlbauer, T (CERN)
Particular kicker systems at CERN use specialized SF6 (Sulphur hexafluoride) gas filled coaxial high voltage cables. Due to discontinued production, economic non-viability and possible environmental impacts, solutions for the replacement of these cables are being investigated. [...]
IEEE, 2018 - 4 p.
In : 2018 IEEE International Conference on High Voltage Engineering and Application, Athens, Greece, 10 - 13 Sep 2018, pp.1-4

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2020-09-19
06:00
A magneto-mechanical model for rotating-coil magnetometers / Sorti, Stefano (CERN ; Milan Polytechnic) ; Petrone, Carlo (CERN) ; Russenschuck, Stephan (CERN) ; Braghin, Francesco (Milan Polytechnic)
Rotating-coil magnetometers are among the most common transducers for measuring local and integral magnetic fields of accelerator magnets. The measurement uncertainty strongly depends on the mechanical properties of the shafts, bearings, drive systems, and supports. [...]
2020 - 9 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 984 (2020) 164599 External link: Fulltext from publisher

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2020-09-19
06:00
Self-localized solutions of the Kundu-Eckhaus equation in nonlinear waveguides / Bayındır, Cihan (Istanbul, Tech. U. ; Bogazici U. ; CERN)
In this paper we numerically analyze the 1D self-localized solutions of the Kundu-Eckhaus equation (KEE) in nonlinear wave guides using the spectral renormalization method (SRM) and compare our findings with those solutions of the nonlinear Schrödinger equation (NLSE). For cubic-quintic nonlinearity with Raman effect, as a benchmark problem we numerically construct single, dual and $N$-soliton solutions for the zero optical potential, i.e. [...]
2019 - 6 p. - Published in : Results Phys. 14 (2019) 102362 External link: Fulltext from publisher

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2020-09-19
06:00
Diffusion bonding of Cu atoms with molecular dynamics simulations / Xydou, A (CERN ; Patras U.) ; Parviainen, S (Helsinki U.) ; Djurabekova, F (Helsinki U. ; Moscow Phys. Eng. Inst.)
Diffusion bonding of copper disks is an important step during the assembly of accelerating structures -the main components of power radio-frequency linear accelerators-. During the diffusion bonding copper disks are subjected to pressure at high temperatures. [...]
2020 - 8 p. External link: Fulltext from publisher

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2020-09-17
09:04
Impact of deconditioning on the secondary electron yield of Cu surfaces in particle accelerators / Petit, V (CERN ; ONERA, Toulouse) ; Taborelli, M (CERN) ; Zanin, D A (CERN) ; Neupert, H (CERN) ; Chiggiato, P (CERN) ; Belhaj, M (ONERA, Toulouse)
Electron cloud is a critical phenomenon in particle accelerators operating with high intensity and positively charged beams, as it is responsible for beam instabilities, vacuum degradation, and heat load on cryogenic sections. Electron clouds provoke a conditioning of the beam pipe that is reflected on the reduction of its secondary electron yield (SEY). [...]
2020 - 9 p. - Published in : Phys. Rev. Accel. Beams 23 (2020) 093101 Fulltext from publisher: PDF;

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2020-09-17
09:04
The impact of synchrotron radiation at the Compact Linear Collider / Arominski, D (CERN ; Warsaw U. of Tech. ; Laue-Langevin Inst.) ; Sailer, A (CERN) ; Latina, A (CERN) ; Schulte, D (CERN)
Synchrotron radiation (SR) emission and interactions with the vacuum chamber walls have the potential to negatively impact the performance of future electron–positron colliders. The Beam Delivery System (BDS) of the Compact Linear Collider (CLIC) contains weak bending and multipole magnets that lead to less intense emissions than at circular colliders with similar centre-of-mass energies. [...]
2020 - 16 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 983 (2020) 164522 Fulltext from publisher: PDF;

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2020-09-17
09:04
A study of asymmetric tensile properties of large area GEM foil / Saviano, G (Frascati ; Rome U.) ; Muhammad, S (NCP, Islamabad) ; Benussi, L (Frascati) ; Bianco, S (Frascati) ; Piccolo, D (Frascati) ; Caponero, M A (Frascati ; ENEA, Frascati) ; Passamonti, L (Frascati) ; Pierluigi, D (Frascati) ; Russo, A (Frascati) ; Santonicola, M G (Rome U.) et al.
Gas Electron Multiplier (GEM) technology is being used in various applications, particularly in high energy physics experiments. The GEM is known as a reliable detector in high radiation environment which can maintain high temporal and position resolution. [...]
2020 - 10 p. - Published in : JINST 15 (2020) P09011 Fulltext: PDF;

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2020-09-17
09:04
Evolution of bunch envelope and emittance in photo-injectors with application to the AWAKE experiment / Kelisani, M D (CERN ; IPM, Tehran) ; Doebert, S (CERN) ; Aslaninejad, M (IPM, Tehran) ; Holzer, B (CERN)
We investigate on time evolution of envelopes and emittance of bunched beams in photo-injectors. We carry out a detailed beam dynamic study with focus on calculations of space charge forces. [...]
2020 - 13 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 982 (2020) 164564

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