CERN Accelerating science

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2019-09-17
07:00
Multiobjective genetic algorithm approach to optimize beam matching and beam transport in high-intensity hadron linacs / Yarmohammadi Satri, M (CERN ; IPM, Tehran) ; Lombardi, A M (CERN) ; Zimmermann, F (CERN)
In this article we demonstrate how a multiobjective genetic algorithm, like the nondominated sorting genetic algorithm II (NSGAII), and a selection tool, like the technique for order preference by similarity to ideal solution (TOPSIS), can be employed for beam matching and for optimizing the beam transport in the low and medium energy section of a modern hadron linac including space charge effect. Combining NSGAII with the particle tracking code TRAVEL v4.07, we determine the Pareto optimal front, and then apply TOPSIS for the final selection using the example of the 160 MeV H$^−$ LINAC4 at CERN. [...]
2019 - 10 p. - Published in : Phys. Rev. Accel. Beams 22 (2019) 054201 Fulltext from Publisher: PDF;

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2019-07-05
18:18
Experience with antiproton stacking at injection energy in CERN’s AD / Angoletta, Maria Elena (CERN) ; Belochitskii, Pavel ; Bojtar, Lajos (CERN) ; Eriksson, Tommy (CERN) ; Findlay, Alan James (CERN) ; Pedersen, Flemming
CERN’s Antiproton Decelerator (AD) started operating for physics in July 2000 and has been successfully providing experiments with antiprotons since then [...]
CERN-ACC-NOTE-2019-0025.
- 2019. - 24 p.
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2019-07-04
06:06
Performance comparison of Nuclear Magnetic Resonance and FerriMagnetic Resonance field markers for the control of low-energy Synchrotrons / Grech, Christian (Malta U. ; CERN) ; Beaumont, Anthony (CERN ; Ecole Polytechnique, Lausanne) ; Buzio, Marco (CERN) ; Sammut, Nicholas (Malta U.)
A field marker is a magnetic field sensor used in synchrotrons, which provides a digital trigger when the magnetic field reaches a pre-set threshold. This paper describes the results of an in-situ measurement performed on the Extra Low ENergy Antiproton (ELENA) decelerator’s main bending dipoles at the European Organization for Nuclear Research (CERN). [...]
2018 - 5 p. - Published in : J. Phys. : Conf. Ser. 1065 (2018) 052022 Fulltext: PDF;
In : 22nd World Congress of the International Measurement Confederation, Belfast, United Kingdom, 3 - 6 Sep 2018, pp.052022

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2019-07-02
14:43
New PS Vacuum chamber correction JIG : Drawing N° P-00148-2 / Whitfield, C
PS-ML-Tech-Note-86-21 ; CERN-PS-ML-Tech-Note-86-21.
- 1986. - 2 p.
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2019-07-02
14:40
Prototype Alignment JIG : Drawing P-00117-2 / Whitfield, C
PS-ML-Tech-Note-86-20 ; CERN-PS-ML-Tech-Note-86-20.
- 1986. - 2 p.
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2019-07-02
14:37
JIG V.C. - Dessin P.00041 / Roux, J M
PS-ML-Note-Tech-86-19 ; CERN-PS-ML-Note-Tech-86-19.
- 1986. - 2 p.
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2019-07-02
14:31
Specification of standard materials, properties and manufacturing procedures that were used for the design and manufacture of components for the PS vacuum system / Whitfield, C
PS-ML-Tech-Note-86-11 ; CERN-PS-ML-Tech-Note-86-11.
- 1986. - 11 p.
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2019-07-02
14:29
Results of the inspection of the two prototype enamelled flanges for the new PS vacuum system / Whitfield, C
PS-ML-Tech-Note-86-10 ; CERN-PS-ML-Tech-Note-86-10.
- 1986. - 2 p.

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2019-07-02
14:25
Results of the dimensional inspection of the prototype PS vacuum chamber and manifold / Whitfield, C
PS-ML-Tech-Note-86-9 ; CERN-PS-ML-Tech-Note-86-9.
- 1986. - 8 p.
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2019-07-02
13:57
Uranus 625 - Stainless steel for the new standard enlarged PS vacuum chamber : Addendum 1 to PS-ML-Note-Tech-86-5 / Poncet, A
PS-ML-Note-Tech-86-8 ; CERN-PS-ML-Note-Tech-86-8.
- 1986. - 4 p.
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