CERN Accelerating science

Accelerators & Technology Sector Notes

Latest additions:
2020-07-20
16:22
TT20 Transport and Splitting of Beams Extracted Using Crystal Shadowing in LSS2 of the SPS / Arrutia Sota, Pablo Andreas (University of London (GB)) ; Dutheil, Yann (CERN) ; Fraser, Matthew Alexander (CERN) ; Velotti, Francesco Maria (CERN)
The CERN Super Proton Synchrotron (SPS) is employed to supply slow extracted beams to fixed target experiments located in CERN’s North Area [...]
CERN-ACC-NOTE-2020-0040.
- 2020. - 17 p.
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2020-07-13
11:49
Outgassing rates of PEEK, Kapton® and Vespel® foils / Sammartano, Sergio Giacomo (ARCADA Polytechnic Sch. of Tech. (FI)) ; Wevers, Ivo (CERN) ; Bregliozzi, Giuseppe (CERN) ; Chiggiato, Paolo (CERN)
The outgassing rates of PEEK, Vespel® and Kapton® foils as a function of time and thickness have been studied through a series of pump-down tests. [...]
CERN-ACC-NOTE-2020-0039.
- 2020. - 17 p.
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2020-07-01
12:55
MD 2935: 16L2 solenoid tests / Salvant, Benoit (CERN) ; Albert, Markus (CERN) ; Arduini, Gianluigi (CERN) ; Buffat, Xavier (CERN) ; Collier, Paul (CERN) ; Gorzawski, Arkadiusz (University of Malta (MT)) ; Grob, Laura Katharina ; Iadarola, Giovanni (CERN) ; Lechner, Anton (CERN) ; Levens, Tom (CERN) et al.
This MD allowed confirming that the solenoid installed in 16L2 during Technical Stop 2 (TS22017) could be held responsible for the performance improvement observed after TS2. [...]
CERN-ACC-NOTE-2020-0038.
- 2020. - 8 p.

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2020-06-24
14:20
Progress report : UFO Dynamics studies / Belanger, Philippe (Universite de Montreal (CA))
(From the collaboration on UFO studies between TRIUMF and CERN HL-LHC)
CERN-ACC-NOTE-2020-0037.
- 2020.
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2020-06-24
14:19
Progress report : UFO Dynamics studies / Belanger, Philippe (Universite de Montreal (CA))
(From the collaboration on UFO studies between TRIUMF and CERN HL-LHC)
CERN-ACC-NOTE-2020-0036.
- 2019.
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2020-06-12
17:02
MD3308 – Growth rate versus chromaticity measurement at injection / Amorim, David (CERN) ; Antipov, Sergey (CERN) ; Buffat, Xavier (CERN) ; Carideo, Emanuela (CERN) ; Dascalu, Titus-Stefan (CERN) ; Metral, Elias (CERN) ; Mounet, Nicolas (CERN) ; Oeftiger, Adrian (CERN) ; Salvant, Benoit (CERN) ; Valuch, Daniel (CERN)
This report summarises the results of MD3308 on the measurement of the instability rise time as a function of chromaticity in the LHC. [...]
CERN-ACC-NOTE-2020-0034.
- 2020. - 8 p.
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2020-06-12
16:42
MD3318 – Impedance Contribution of Secondary and Tertiary Collimators / Amorim, David (Universite Grenoble-Alpes (FR)) ; Antipov, Sergey ; Biancacci, Nicolo (CERN) ; Buffat, Xavier (CERN) ; Mereghetti, Alessio (CERN) ; Metral, Elias (CERN) ; Redaelli, Stefano (CERN) ; Salvant, Benoit (CERN) ; Soderen, Martin (CERN) ; Valuch, Daniel (CERN)
This report summarises the results of MD3318 about impedance measurements of individual LHC secondary and tertiary collimators. [...]
CERN-ACC-NOTE-2020-0033.
- 2020. - 11 p.
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2020-05-28
16:03
I/Q Model of the SPS 200 MHz Travelling Wave Cavity and Feedforward Design / Baudrenghien, Philippe (CERN) ; Mastoridis, Themistoklis (California Polytechnic State Univ. (US))
As part of the LHC injector upgrade project (LIU), that calls for the doubling of the bunch intensity injected from the SPS into the LHC, the SPS Low Level RF (LLRF) is fully upgraded during the LHC Long-Shutdown 2 (LS2) [...]
CERN-ACC-NOTE-2020-0032.
- 2020. - 22 p.
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2020-05-18
12:47
RF multipoles deliverable / Cruz Alaniz, Emilia (University of Liverpool (GB)) ; Papaphilippou, Yannis (CERN) ; Welsch, Carsten Peter (University of Liverpool (GB))
The crab cavities to be installed in the High-Luminosity LHC (HL-LHC) aim to provide an increase in luminosity by restoring head-on collisions and therefore reducing the loss of luminosity due to the crossing angle. [...]
CERN-ACC-NOTE-2020-0031.
- 2020. - 17 p.
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2020-05-18
12:34
Summary of the 2019 ICAF, LIU & ARIES Space Charge Workshop at CERN / Schmidt, Frank (CERN) ; Papaphilippou, Yannis (CERN)
Following the success of the previous Space Charge Workshop at CERN in 2013, in Oxford in 2015 and in Darmstadt in 2017, CERN has hosted the 4th workshop in this series from the 4th - 6th November 2019, and it has been held under the auspices of ICFA, LIU and ARIES [...]
CERN-ACC-NOTE-2020-0030.
- 2020. - 8 p.
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LHC MD Notes (155)