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CERN Document Server 找到 11 笔记录  1 - 10下一个  跳到记录: 检索需时 0.66 秒. 
1.
Multi-bunch and Multi-burst Longitudinal Beam Observation in the PS / Krefta, Dawid (Warsaw School of Economics (PL)) ; Huschauer, Alexander (CERN) ; Lasheen, Alexandre (CERN) ; Pahl, Hannes (CERN) ; Trad, Georges (CERN)
A new wall current monitor was installed in the PS during the Year-End Technical Stop 2022-2023 with the aim of using it as a longitudinal beam quality monitor. [...]
CERN-ACC-NOTE-2024-0015. - 2024. - 16 p.
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2.
Multi-objective extremum seeking to control drifts in the transverse beam splitting efficiency of the multi-turn extraction at the CERN proton synchrotron / Uden, Cédric (CERN) ; Huschauer, Alexander (CERN) ; Pahl, Hannes (CERN) ; Schenk, Michael (CERN) ; Madysa, Nico (CERN) ; Kain, Verena (CERN)
Time-varying fluctuations of the intensity sharing between the islands and the core of the beam extracted via the CERN Proton Synchrotron (PS) Multi-Turn Extraction are the main effects that require manual adjustment for this beam type. To mitigate this, the application of an online controller is explored to further enhance both operational autonomy of the accelerator and physics performance. [...]
2023 - 4 p. - Published in : JACoW IPAC 2023 (2023) TUPA159 Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.TUPA159
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3.
Electron gun producing beams with controllable current density / Pikin, Alexander (CERN ; Madrid, CIEMAT) ; Bencini, Vittorio (CERN) ; Pahl, Hannes (CERN ; Heidelberg U.) ; Wenander, Fredrik (CERN)
The existing Brillouin-type electron gun at the TwinEBIS test bench is, according to Herrmann theory, capable of producing an electron beam with a current density of 3850 A/cm$^{2}$ in the 2 T solenoid. To control the electron beam current density and the magnetic flux inside the beam, the existing electron gun - now using purely electrostatic focusing - can be modified by permitting magnetic flux to reach the cathode. [...]
2022 - 5 p. - Published in : J. Phys. : Conf. Ser. 2244 (2022) 012103 Fulltext: PDF;
In : 19th International Conference on Ion Sources (ICIS 2021), Vancouver, BC, Canada, 20 - 24 Sep 2021, pp.012103
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4.
Nonadiabatic electron gun at an electron beam ion source: Commissioning results and charge breeding investigations / Pahl, Hannes (CERN) ; Bidault, Niels Killian Noal (CERN) ; Khatri, Gunn (CERN) ; Pikin, Alexander (Centro de Investigaciones Energéticas Medioambientales y Tec. (ES)) ; Wenander, Fredrik John Carl (CERN)
The electron gun of the REXEBIS charge breeder at the REX/HIE-ISOLDE facility at CERN has been upgraded from a standard magneto-immersed type to a gun using a nonadiabatic magnetic element [...]
CERN-ACC-NOTE-2022-0005. - 2022.
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5.
Challenges in $^{11}$C charge breeding / Pitters, J (CERN) ; Breitenfeldt, M (ADAM, Geneva) ; Pahl, H (CERN ; Heidelberg U.) ; Pikin, A (CERN ; Manchester U.) ; Wenander, F (CERN)
In this paper we discuss the possibilities of using a charge breeding scheme based on an Electron Beam Ion Source for beam preparation of a radioactive $^{11}$ C beam for hadron therapy. Test measurements under extreme operating conditions were conducted at the REX-ISOLDE facility to explore the limitations of the charge breeder for high-intensity, low-repetition-rate, molecular CO $^{+}$ beams. [...]
2020 - Published in : Nucl. Instrum. Methods Phys. Res., B 463 (2020) 198-200 Fulltext from Publisher: PDF;
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6.
Preparation for TwinEBIS time of flight diagnostics system / Taylor, Rebecca Louise ; Wenander, Fredrik John Carl (CERN) ; Khatri, Gunn (Northwestern University (US)) ; Pahl, Hannes (Ruprecht Karls Universitaet Heidelberg (DE))
TwinEBIS is commissioning a time of flight diagnostics system for the identification of charged ions. [...]
CERN-STUDENTS-Note-2019-184. - 2019
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7.
High Frequency RFQ Design and LEBT Matching for the CERN TwinEBIS Ion Source / Bencini, Vittorio (CERN) ; Breitenfeldt, Martin (CERN) ; Lallement, Jean-Baptiste (CERN) ; Lombardi, Alessandra (CERN) ; Pahl, Hannes (CERN) ; Pikin, Alexander (CERN) ; Pitters, Johanna (CERN) ; Wenander, Fredrik (CERN)
An Electron Beam Ion Source (EBIS) is being developed at CERN for production of highly charged ions, for instance fully stripped $^{12}$C. The focus has so far been on the electron gun design, aiming for a high current compression, which results in a rapid ionisation process and thereby high repetition rate. [...]
CERN-ACC-2018-186.- 2018 - 4 p. - Published in : 10.18429/JACoW-LINAC2018-TUPO016 Fulltext: PDF;
In : 29th International Linear Accelerator Conference, Beijing, China, 16 - 21 Sep 2018, pp.TUPO016
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8.
Pepperpot emittance measurements of ion beams from an electron beam ion source / Pitters, J (CERN) ; Breitenfeldt, M (CERN) ; Duarte Pinto, S (PHOTONIS) ; Pahl, H (CERN ; U. Heidelberg (main)) ; Pikin, A (CERN ; Manchester U.) ; Shornikov, A (CERN ; High Voltage Engineering Europa B.V.,) ; Wenander, F (CERN)
A pepperpot emittance meter was used to measure the transverse emittance of multiply charged beams from REXEBIS, an Electron Beam Ion Source (EBIS) used for charge breeding of radioactive ion beams. The emittance meter is equipped with a Micro Channel Plate (MCP), a phosphor screen and a CCD camera for detection of the ion signal. [...]
2019 - 8 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 922 (2019) 28-35 Fulltext: PDF;
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9.
Summary of charge breeding investigations for a future $^{11}$C treatment facility / Pitters, Johanna ; Breitenfeldt, Martin ; Pahl, Hannes (Ruprecht Karls Universitaet Heidelberg (DE)) ; Pikin, Alexander (University of Manchester (GB)) ; Wenander, Fredrik John Carl (CERN)
In this report we discuss the possibilities of using a charge breeding scheme based on an Electron Beam Ion Source for beam preparation of a radioactive 11C beam for hadron therapy. [...]
CERN-ACC-Note-2018-0078. - 2018.
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10.
A low energy ion beamline for TwinEBIS / Pahl, H (CERN ; Heidelberg U.) ; Bencini, V (CERN ; INFN, Rome ; Rome U.) ; Breitenfeldt, M (CERN ; ADAM, Geneva) ; Granadeiro Costa, A R (CERN ; IST, Lisbon (main)) ; Pikin, A (CERN ; Brookhaven Natl. Lab.) ; Pitters, J (CERN) ; Wenander, F (CERN)
A low energy beamline has been designed for the TwinEBIS setup. The beamline will be used to transport ions extracted from the electron beam ion source into an accelerating radio frequency quadrupole or into secondary devices, like a time of flight-mass spectrometer, attached to the beamline via a fast three way 20° ion switchyard. [...]
2018 - 21 p. - Published in : JINST 13 (2018) P08012 Fulltext: pdf - PDF; 10.1088_1748-0221_13_08_P08012 - PDF;
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