CERN Accelerating science

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Ultimi arrivi:
2019-10-22
10:48
MD 3292: Measurements of Landau Damping by Means of BTF Measurements / Tambasco, Claudia (EPFL - Ecole Polytechnique Federale Lausanne (CH)) ; Amorim, David (Universite Grenoble-Alpes (FR)) ; Buffat, Xavier (CERN) ; Bruce, Roderik (CERN) ; Gasior, Marek (CERN) ; Levens, Tom (CERN) ; Mereghetti, Alessio (CERN) ; Metral, Elias (CERN) ; Mounet, Nicolas (CERN) ; Pieloni, Tatiana (EPFL - Ecole Polytechnique Federale Lausanne (CH)) et al.
The methodology applied in previous MDs has shown the possibility of using BTFs measurements to estimate the transverse Landau Damping of the beams for different machine configurations. [...]
CERN-ACC-NOTE-2019-0045.
- 2019. - 10 p.
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2019-10-22
10:41
MD 3290: Instability threshold measurements in the presence of a controlled external excitation / Tambasco, Claudia (EPFL - Ecole Polytechnique Federale Lausanne (CH)) ; Barranco, Javier (EPFL - Ecole Polytechnique Federale Lausanne (CH)) ; Buffat, Xavier (CERN) ; Metral, Elias (CERN) ; Mounet, Nicolas (CERN) ; Levens, Tom (CERN) ; Pieloni, Tatiana (EPFL - Ecole Polytechnique Federale Lausanne (CH))
During the MD 2722 an unexpected instability was observed at flat top energy during BTF measurements. [...]
CERN-ACC-NOTE-2019-0044.
- 2019. - 6 p.
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2019-10-10
16:03
TID, ΦHEH and ΦThN measurements along the SPS accelerator and the adjacent Tunnel Access Areas / Brucoli, Matteo (CERN) ; Danzeca, Salvatore (CERN) ; Martinella, Corinna (University of Jyvaskyla (FI)) ; Kadi, Yacine (CERN) ; Garcia Alia, Ruben (CERN)
In this document, the measurements of Total Ionizing Dose, High Energy Hadron fluence and Thermal Neutron fluence are presented for some areas of the Super Proton Synchrotron, cumulated during 2017 and 2018 [...]
CERN-ACC-NOTE-2019-0043.
- 2019. - 19 p.
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2019-10-09
09:01
Report and Analysis from LHC MD 3311: Amplitude detuning at end-of-squeeze / Dilly, Joschua Werner (Humboldt University of Berlin (DE)) ; Albert, Markus (CERN) ; Argyropoulos, Theodoros (CERN) ; Carlier, Felix Simon (Technische Universiteit Delft (NL)) ; Hofer, Michael (Vienna University of Technology (AT)) ; Malina, Lukas (CERN) ; Maclean, Ewen Hamish (University of Malta (MT)) ; Solfaroli Camillocci, Elena (Sapienza Universita e INFN, Roma I (IT)) ; Tomas Garcia, Rogelio (CERN)
Amplitude detuning at end-of-squeeze is measured during this MD, with both flat-orbit and crossing-angles in IP5. [...]
CERN-ACC-NOTE-2019-0042.
- 2019. - 39 p.
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2019-10-08
19:34
Beam-induced heat loads on the beam screens of the HL-LHC arcs / Skripka, Galina (Joint Institute for Nuclear Research (RU)) ; Iadarola, Giovanni (CERN)
The heat load on the beam screens of cold magnets and drift sections in the HL-LHC arcs is estimated considering power deposition from impedance, synchrotron radiation and electron cloud. [...]
CERN-ACC-NOTE-2019-0041.
- 2019. - 25 p.
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2019-10-08
12:00
Report on the Prompt Dose Distribution Along the LHC Based on BLM Data for proton-proton operation in Run 2 / Bilko, Kacper (CERN) ; Stein, Oliver
In this report dose levels and the distributions of the prompt total ionising dose along the LHC for the proton-proton operation are presented for Run 2, covering the accelerator operation periods in 2015, 2016, 2017 and 2018. [...]
CERN-ACC-NOTE-2019-0040.
- 2019. - 126 p.
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2019-10-08
10:00
Ideas and proposal for improved longitudinal beam observation in the PS / Kozlowski, Pawel (Warsaw University of Technology (PL)) ; Lasheen, Alexandre (CERN)
A new Wall Current Monitor is planned to be installed in the PS during the Year-End Technical Stop 2021-2022 to install a Beam Quality Monitor in the PS, like in the SPS. [...]
CERN-ACC-NOTE-2019-0039.
- 2019. - 8 p.
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2019-09-26
16:45
Reliability Considerations for the LHC MKB Re-trigger Upgrade During LS2 / Renner, Elisabeth (Vienna University of Technology (AT)) ; Bartmann, Wolfgang (CERN) ; Benedikt, Michael (CERN) ; Magnin, Nicolas (CERN) ; Wiesner, Christoph (CERN)
An upgrade of the LHC dilution kicker system (MKB) during LS2 foresees the new implementation of a MKB re-trigger mechanism. [...]
CERN-ACC-2019-0055.
- 2018. - 37 p.
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2019-09-19
16:25
A VdM Sequence File Web Application / Hickman, Thomas Kendall ; Marqversen, Frederik Kofoed ; Calia, Andrea (CERN) ; Hostettler, Michi (CERN)
To perform Van der Meer scans at the LHC, the experimental collaborations have to supply a text file containing a command sequence specifying the beam positions required. [...]
CERN-ACC-NOTE-2019-0038.
- 2019.

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2019-09-19
11:31
Studies of PACMAN effects in the HL-LHC / Ribes Metidieri, Ariadna (University of Barcelona (ES)) ; Buffat, Xavier (CERN)
This note summarises the status of the studies on PACMAN beam-beam effects in the HL-LHC project. [...]
CERN-ACC-NOTE-2019-0037.
- 2019. - 34 p.
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