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CERN Document Server 26 notices trouvées  1 - 10suivantfin  aller vers la notice: La recherche a duré 0.71 secondes. 
1.
Beam Performance with the LHC Injectors Upgrade / zannini, C (CERN) ; Wegner, R (CERN) ; Vollinger, C (CERN) ; Veness, R (CERN) ; Velotti, F (CERN) ; Sullivan, M (CERN) ; Steerenberg, R (CERN) ; Spierer, A (CERN) ; Skowronski, P (CERN) ; Sito, L (CERN) et al.
The LHC Injectors Upgrade (LIU) project was put in place between 2010 and 2021 to increase the intensity and brightness in the LHC injectors to match the challenging requirements of the High-Luminosity LHC (HL-LHC) project, while ensuring reliable operation of the injectors complex up to the end of the HL-LHC era (ca. 2040). [...]
2024 - 8 p. - Published in : JACoW HB 2023 (2024) 1-8 Fulltext: PDF;
In : 68th ICFA Advanced Beam Dynamics workshop on high-Intensity and High-Brightness Hadron Beams (HB 2023), CERN, Geneva, Switzerland, 9 - 13 Oct 2023, pp.1-8
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2.
Operational Tool for Automatic Setup of Controlled Longitudinal Emittance Blow-Up in the CERN SPS / Bruchon, Niky (CERN) ; Karpov, Ivan (CERN) ; Madysa, Nico (CERN ; Darmstadt, GSI) ; Papotti, Giulia (CERN) ; Quartullo, Danilo (CERN)
The controlled longitudinal emittance blow-up is necessary to ensure the stability of high-intensity LHC-type beams in the CERN SPS. It consists of diffusing the particles in the bunch core by injecting a bandwidth-limited noise into the beam phase loop of the main 200 MHz RF system. [...]
2023 - 6 p. - Published in : JACoW ICALEPCS 2023 (2023) TUPDP086 Fulltext: PDF;
In : 19th International Conference on Accelerator and Large Experimental Physics Control Systems (ICALEPCS 2023), Cape Town, South Africa, 7 - 13 Oct 2023, pp.TUPDP086
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3.
SPS fixed target spill quality improvements in the longitudinal plane / Papotti, Giulia (CERN) ; Spierer, Arthur (CERN) ; Quartullo, Danilo (CERN) ; Hagmann, Gregoire (CERN) ; Karpov, Ivan (CERN) ; Piandani, Roberto (San Luis Potosi U.)
The SPS proton fixed target beams are spilled via a third integer resonant extraction, for which high momentum spread is beneficial. To increase the momentum spread prior to the slow extraction, the bunches are stretched at the unstable phase by inverting the sign of the RF voltage. [...]
2023 - 4 p. - Published in : JACoW IPAC 2023 (2023) TUPA157 Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.TUPA157
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4.
High-precision RF voltage measurements using longitudinal phase-space tomography in CERN PSB and SPS / Quartullo, Danilo (CERN) ; Albright, Simon (CERN) ; Damerau, Heiko (CERN) ; Papotti, Giulia (CERN)
Precisely determining the gap voltage and phase in an RF cavity is essential for the calibration of the LLRF feedbacks. [...]
LLRF2023/45 ; arXiv:2310.16859. -
Fulltext
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5.
RF Voltage Calibration Using Phase Space Tomography in the CERN SPS / Quartullo, Danilo (CERN) ; Albright, Simon (CERN) ; Damerau, Heiko (CERN) ; Lasheen, Alexandre (CERN) ; Papotti, Giulia (CERN) ; Zisou, Charilaos (CERN)
Voltage calibration using longitudinal phase-space tomography is a purely beam-based technique to determine the effective RF voltage experienced by a bunch. It was applied in the SPS, separately to each of its six accelerating travelling wave structures. [...]
2022 - 4 p. - Published in : JACoW IPAC 2022 (2022) 841-844 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.841-844
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6.
Simulation Studies of Longitudinal Stability for High-Intensity LHC-Type Beams in the CERN SPS / Quartullo, Danilo (CERN) ; Intelisano, Leandro (CERN) ; Karpov, Ivan (CERN) ; Papotti, Giulia (CERN)
Beams in the SPS for the High Luminosity LHC (HL-LHC) must be stabilized in the longitudinal plane up to an intensity of 2.4·10¹¹ protons per bunch. The fourth harmonic RF system increases Landau damping, and controlled longitudinal emittance blow-up is applied to cope with coupled-bunch instabilities along the ramp and at flat-top. [...]
2022 - 4 p. - Published in : JACoW IPAC 2022 (2022) 2249-2252 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2249-2252
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7.
Towards the Automatic Setup of Longitudinal Emittance Blow-Up in the CERN SPS / Bruchon, Niky (CERN) ; Karpov, Ivan (CERN) ; Madysa, Nico (CERN) ; Papotti, Giulia (CERN) ; Quartullo, Danilo (CERN) ; Zisou, Charilaos (Aristotle U., Thessaloniki ; CERN)
Controlled longitudinal emittance blow-up in the CERN SPS is necessary to stabilize high-intensity beams for the High-Luminosity LHC (HL-LHC) by increasing the synchrotron frequency spread. The process consists of injecting bandwidth-limited noise into the main RF phase loop to diffuse particles in the core of the bunch. [...]
2022 - 4 p. - Published in : JACoW IPAC 2022 (2022) 949-952 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.949-952
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8.
Achievements and Performance Prospects of the Upgraded LHC Injectors / Kain, Verena (CERN) ; Albright, Simon (CERN) ; Alemany-Fernández, Reyes (CERN) ; Angoletta, Maria Elena (CERN) ; Antoniou, Fanouria (CERN) ; Argyropoulos, Theodoros (CERN) ; Asvesta, Foteini (CERN) ; Balhan, Bruno (CERN) ; Barnes, Michael (CERN) ; Barrientos, Diego (CERN) et al.
To provide HL-LHC performance, the CERN LHC injector chain underwent a major upgrade during an almost 2-year-long shutdown. In the first half of 2021 the injectors were gradually re-started with the aim to reach at least pre-shutdown parameters for LHC as well as for fixed target beams. [...]
2022 - 6 p. - Published in : JACoW IPAC 2022 (2022) 1610-1615 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.1610-1615
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9.
Frequency-Dependent RF Voltage Calibration Using Longitudinal Tomography in the CERN PSB / Quartullo, Danilo (CERN) ; Albright, Simon (CERN) ; Damerau, Heiko (CERN)
Longitudinal phase-space tomography reconstructs the phase-space distribution from a set of bunch profiles and the accelerator parameters, which includes the RF voltage. The quality of the reconstruction depends on the accuracy to which these parameters are known. [...]
2022 - 4 p. - Published in : JACoW IPAC 2022 (2022) 845-848 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.845-848
Notice détaillée - Notices similaires
10.
Controlled Longitudinal Emittance Blow-Up for High Intensity Beams in the CERN SPS / Quartullo, Danilo (CERN) ; Damerau, Heiko (CERN) ; Karpov, Ivan (CERN) ; Papotti, Giulia (CERN) ; Shaposhnikova, Elena (CERN) ; Zisou, Charilaos (CERN)
Controlled longitudinal emittance blow-up will be required to longitudinally stabilise the beams for the HighLuminosity LHC in the SPS. Bandwidth-limited noise is injected at synchrotron frequency sidebands of the RF voltage of the main accelerating system through the beam phase loop. [...]
2022 - 6 p. - Published in : JACoW HB 2021 (2022) 71-76 Fulltext: PDF;
In : 64th ICFA Advanced Beam Dynamics Workshop on High Intensity and High Brightness Hadron Beams (HB 2021), Batavia, Illinois, United States, 4 - 9 Oct 2021, pp.71-76
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8 Quartullo, D
1 Quartullo, D.
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