CERN Accelerating science

PS Complex

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Frequency pre-tuning of the niobium-sputtered quarter-wave resonator for HIE-ISOLDE project at CERN / Zhang, P (CERN) ; D׳Elia, A (CERN ; Manchester U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Venturini Delsolaro, W (CERN) ; Artoos, K (CERN)
Superconducting quarter-wave resonators (QWRs) will be used in the superconducting linac upgrade in the frame of the HIE-ISOLDE project at CERN. The QWRs are made of bulk copper and have their inner surface covered with sputtered niobium. [...]
2015 - 9 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 797 (2015) 101-109

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CHARM Facility Test Area Radiation Field Description / Thornton, Adam (University of Surrey (GB))
Specification document summarising the radiation field of the CHARM facility test area. [...]
- 2016. - 51 p.
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Beam dynamics design of the Compact Linear Collider Drive Beam injector / Hajari, Sh Sanaye (IPM, Tehran ; CERN) ; Shaker, H (IPM, Tehran ; CERN) ; Doebert, S (CERN)
In the Compact Linear Collider (CLIC) the RF power for the acceleration of the Main Beam is extracted from a high-current Drive Beam that runs parallel to the main linac. The longitudinal and transverse beam dynamics of the Drive Beam injector has been studied in detail and optimized. [...]
2015 - 15 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 799 (2015) 172-186

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Tomography at Injection in the PSB / Hancock, Steven (CERN)
The PSB was conceived as an intensity booster for fixed-target physics. [...]
- 2016.
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High Gradient $Nb_3Sn$ Quadrupole Demonstrator MKQXF Engineering Design / Kokkinos, C (FEAC Engineering P.C.) ; Karppinen, Mikko (CERN)
A new mechanical design concept for the $Nb_3Sn$ quadrupoles has been developed with a goal of an accelerator quality magnet that can be industrially produced in large series. [...]
- 2016. - 46 p.
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Stretched-Wire Techniques and Measurements for the Alignment of a 15ghz RF-BPM for CLIC / Zorzetti, Silvia (CERN; University of Pisa) ; Galindo Muñoz, Natalia (CERN) ; Wendt, Manfred (CERN) ; Fanucci, Luca (University of Pisa)
For the Compact LInear Collider (CLIC) project at CERN, maintaining low emittance beams, as they are transported along the two independent 10-20 km long main linacs, is crucial. The beam trajectory therefore has to be very well aligned to the magnetic centre of the quadrupole magnets. [...]
CERN-ACC-2016-0021.- Geneva : CERN, 2016 - Published in : Fulltext: PDF;
In : International Beam Instrumentation Conference , Melbourne, Australia, 13 - 17 Sep 2015

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Studies of the doubling of the Frascati Beam-Test Facility (BTF) line / Buonomo, Bruno (INFN Laboratori Nazionali di Frascati) ; Di Giulio, Claudio (INFN Laboratori Nazionali di Frascati) ; Foggetta, Luca (INFN Laboratori Nazionali di Frascati) ; Valente, Paolo (INFN Roma)
AIDA-2020-NOTE-2016-002.- Geneva : CERN, 2016 Fulltext: DOCX;

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Straightforward and accurate technique for post-coupler stabilization in drift tube linac structures / Khalvati, Mohammad Reza (IPM, Tehran ; CERN) ; Ramberger, Suitbert (CERN)
The axial electric field of Alvarez drift tube linacs (DTLs) is known to be susceptible to variations due to static and dynamic effects like manufacturing tolerances and beam loading. Post-couplers are used to stabilize the accelerating fields of DTLs against tuning errors. [...]
2016 - 12 p. - Published in : Phys. Rev. Accel. Beams 19 (2016) 042001 Fulltext: PDF;

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RF Cavity Induced Sensitivity Limitations on Beam Loss Monitors / Kastriotou, M (CERN ; Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Degiovanni, A (CERN) ; Sousa, F S Domingues (CERN) ; Effinger, E (CERN) ; Holzer, E B (CERN) ; Quirante, J L Navarro (CERN) ; del Busto, E N (CERN ; Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Tecker, F (CERN) ; Viganò, W (CERN) ; Welsch, C P (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) et al.
Due to the secondary showers generated when a particle hits the vacuum chamber, beam losses at an accelerator may be detected via radiation detectors located near the beam line. Several sources of background can limit the sensitivity and reduce the dynamic range of a Beam Loss Monitor (BLM). [...]
2015 - 8 p. - Published in : Phys. Procedia 77 (2015) 21-28 Elsevier Open Access article: PDF;

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A Structured Approach to Analyze the Influence of Channel Dimensions on Heat Extraction via Superfluid Helium / Bielert, E R (Twente U., Enschede ; CERN) ; ten Kate, H H J (Twente U., Enschede ; CERN) ; Verweij, A P (CERN)
For the luminosity upgrade of the LHC at CERN, the final focusing quadrupole magnets will be exposed to an increased energy deposition in their coil windings. To have a higher heat transfer rate between cable and superfluid helium bath, the cable insulation has been subject of many studies. [...]
2015 - 7 p. - Published in : Phys. Procedia 67 (2015) 815-821 Elsevier Open Access article: PDF;
In : 25th International Cryogenic Conference & International Cryogenic Materials Conference 2014, Twente U., Enschede, The Netherlands, 07 - 11 Jul 2014, pp.815-821

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