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ATS Notes

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2022-08-12
18:32
Report from LHC MD 3312: Replicating HL-LHC DA / Dilly, Joschua Werner (Humboldt University of Berlin (DE)) ; Albert, Markus (CERN) ; Carlier, Felix Simon (CERN) ; Coello De Portugal - Martinez Vazquez, Jaime Maria ; Dalena, Barbara (Université Paris-Saclay (FR)) ; Fol, Elena (CERN) ; Hofer, Michael (CERN) ; Maclean, Ewen Hamish (CERN) ; Malina, Lukas ; Persson, Tobias Hakan Bjorn (CERN) et al.
During MD3312 on the 30.10.2018 the non-linear conditions in the insertion regions of the planned HL-LHC were replicated to our best knowledge and within the capabilities of the hardware currently available in the LHC: A flat ATS-optics scheme of beta* = 15cm / 60cm in IP1 and IP5 was applied as well as sextupole, octupole and (normal) dodecapole errors were introduced into the machine via the corrector magnets in the interaction regions. [...]
CERN-ACC-NOTE-2022-0021. - 2022.

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2022-07-14
16:49
Prospects for beam-based study of dodecapole nonlinearities in the CERN High-Luminosity Large Hadron Collider / Maclean, Ewen Hamish (CERN) ; Carlier, Felix Simon (CERN) ; Dilly, Joschua Werner (Humboldt University of Berlin (DE)) ; Giovannozzi, Massimo (CERN) ; Tomas Garcia, Rogelio (CERN)
Nonlinear magnetic errors in low-β insertions can have a significant impact on the beam-dynamics of a collider such as the CERN Large Hadron Collider (LHC) and its luminosity upgrade (HL-LHC). [...]
CERN-ACC-NOTE-2022-0020. - 2022. - 34 p.

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2022-07-11
11:32
Design of a new SPS injection system via numerical optimisation / Waagaard, Elias Walter (Uppsala University (SE)) ; Barnes, Mike (CERN) ; Bartmann, Wolfgang (CERN) ; Borburgh, Jan (CERN) ; Ducimetiere, Laurent Sylvain (CERN) ; Kramer, Thomas (CERN) ; Stadlbauer, Tobias (CERN) ; Trubacova, Pavlina (CERN) ; Velotti, Francesco Maria (CERN)
The Super Proton Synchrotron (SPS) injection system plays a fundamental role to preserve the quality of injected high-brightness beams for the Large Hadron Collider (LHC) physics program and to maintain the maximum storable intensity. [...]
CERN-ACC-NOTE-2022-0019. - 2022. - 6 p.
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2022-06-24
12:20
A COMPACT SYNCHROTRON FOR ADVANCED CANCER THERAPY WITH HELIUM AND PROTON BEAMS / Vretenar, Maurizio (CERN) ; Angoletta, Maria Elena (CERN) ; Bisoffi, Giovanni (Universita e INFN, Legnaro (IT)) ; Borburgh, Jan (CERN) ; Bottura, Luca (CERN) ; Palskis, Kristaps (Riga Technical University (LV)) ; Tranquille, Gerard Alain (CERN) ; Benedetto, Elena (SEEIIST Association (CH)) ; Sapinski, Mariusz (Paul Scherrer Institute (CH)) ; Taylor, Rebecca Louise (CERN)
Recent years have seen an increased interest in the use of helium for radiation therapy of cancer. [...]
CERN-ACC-NOTE-2022-0018. - 2022. - 4 p.

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2022-06-15
15:26
Carbon ion compact medical synchrotron: key parameters / Benedetto, Elena (SEEIIST Association (CH))
The report provides the key parameters for a compact medical synchrotron for carbon and other ions [...]
CERN-ACC-NOTE-2022-0017 ; NIMMS-Note 008. - 2022. - 7 p.
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2022-06-01
15:43
Preliminary design of SEEIIST High Energy Beam Transfer lines / Sapinski, Mariusz (Paul Scherrer Institute (CH))
The South-East Europe International Institute for Sustainable Technologies (SEEIIST) is planning to construct a new Carbon Ion Radiotherapy Center in South-East Europe. [...]
CERN-ACC-NOTE-2022-0016 ; NIMMS-Note-009. - 2022. - 27 p.
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2022-04-21
12:13
How to Install and Operate Fixed Target Experiments in the North an East Experimental Areas at CERN / Gerbershagen, Alexander (CERN) ; Banerjee, Dipanwita (CERN) ; Bernhard, Johannes (CERN) ; Brugger, Markus (CERN) ; Charitonidis, Nikolaos (CERN) ; Gatignon, Lau (Lancaster University (GB)) ; Lazzaroni, Michael (CERN) ; Romagnoli, Giulia (CERN)
This note describes the required input, decision process and life cycle for the design, installation/adaptation, and operation of fixed target beam lines at the North and East Areas at CERN. [...]
CERN-ACC-NOTE-2022-0015. - 2022. - 8 p.
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2022-04-20
11:48
SPS MD5044: machine stability characterisation of Gamma Factory SPS Proof-of-Principle Experiment / Ramjiawan, Rebecca Louise (CERN) ; Bartosik, Hannes (CERN) ; Dutheil, Yann (CERN) ; Hofle, Wolfgang (CERN) ; Krasny, Mieczyslaw Witold (Centre National de la Recherche Scientifique (FR)) ; Martens, Aurelien (Université Paris-Saclay (FR)) ; Papaphilippou, Yannis (CERN) ; Petrenko, Alexey ; Velotti, Francesco Maria (CERN)
The Gamma Factory (GF) initiative proposes an innovative method of producing high-energy, high-intensity photon beams via the laser-excitation and subsequent decay of relativistic partially stripped ions stored in the CERN LHC. [...]
CERN-ACC-NOTE-2022-0014 ; CERN-PBC-Notes-2022-006. - 2022. - 16 p.
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2022-04-19
14:45
Magnetic measurements of MCBC and MCBY orbit correctors under special cycling conditions / Chmielinska, Agnieszka (CERN) ; Fiscarelli, Lucio (CERN) ; Todesco, Ezio (CERN) ; Kozanecki, Witold (Université Paris-Saclay (FR))
In the LHC, in addition to normal beam operation, the MCBC and MCBY orbit-corrector magnets are used for deflecting the beam during the van der Meer (vdM) scans used for calibrating the absolute luminosity scale. [...]
CERN-ACC-NOTE-2022-0013. - 2022. - 28 p.
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2022-03-29
18:20
Optimal LHC optics phasing conditions for long-range beam-beam compensation and flat optics / Fartoukh, Stephane (CERN)
This note describes a new possible phasing configuration for the (HL-)LHC optics, in order to further reduce the minimum allowed distance of beam-beam wire compensators with respect to the beam. [...]
CERN-ACC-NOTE-2022-0012. - 2022. - 17 p.
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