CERN Accelerating science

Technologies and Systems

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2017-02-15
09:50
Coupled-bunch instabilities due to fundamental cavity impedance / Mastoridis, Themistoklis (California Polytechnic State Univ. (US)) ; Baudrenghien, Philippe (CERN) ; Chapochnikova, Elena (CERN) ; Esteban Muller, Juan (CERN) ; Molendijk, John (CERN) ; Timko, Helga (CERN)
The purpose of this MD was to estimate the stability threshold due to longitudinal coupled-bunch instabilities (CBIs) driven by the RF cavities' fundamental impedance. [...]
CERN-ACC-NOTE-2017-0009.
- 2017.
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2017-01-23
11:40
RF Measurements and Tuning of the 750 MHz HF-RFQ / Koubek, Benjamin (CERN) ; Grudiev, Alexej (CERN) ; Timmins, Marc (CERN)
In the frame of the program on medical applications CERN has built a compact 750 MHz RFQ to be used as an injector for a hadron therapy linac. [...]
CERN-ACC-NOTE-2017-0006.
- 2017.
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2016-10-13
15:58
Addendum to ATS Note CERN-ACC-NOTE-2016-0052 / Charitonidis, Nikolaos (CERN) ; Efthymiopoulos, Ilias (CERN) ; Karyotakis, Yannis (LAPP (FR))
The authors would like to publish this addendum to their note [1] in order to present specific results for H4-VLE beam line, and the corresponding experiment, designated “NP-04”..
CERN-ACC-NOTE-2016-0059.
- 2016. - 7 p.
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2016-09-13
08:41
Time Optimal Synchronization Procedure and Associated Feedback Loops / Angoletta, Maria Elena (CERN) ; Pedersen, Flemming
A procedure to increase the speed of currently used synchronization loops in a synchrotron by an order of magnitude is presented. [...]
CERN-ACC-NOTE-2016-0055.
- 2016. - 31 p.
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2016-09-12
14:54
Thermal Studies on the SPS Wideband Transverse Feedback Kicker / Roggen, Toon (CERN) ; Calaga, Rama (CERN) ; Hofle, Wolfgang (CERN) ; Montesinos, Eric (CERN)
As part of the SPS wideband transverse feedback system in the framework of the LHC Injector Upgrade (LIU) project, a wideband kicker design is being proposed. [...]
CERN-ACC-NOTE-2016-0054.
- 2016. - 7 p.
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2016-08-22
14:54
Interpretation of Wire-Scanner asymmetric profiles in a Low-Energy ring / Cieslak-Kowalska, Magdalena Anna (Ecole Polytechnique Federale de Lausanne (CH)) ; Benedetto, Elena (CERN)
In the CERN PS Booster, wire-scanner profile measurements performed at injection energy are affected by a strong asymmetry [...]
CERN-ACC-2016-0109.
- 2016. - 6 p.
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2016-08-16
15:23
Beam screen cryogenic control improvements for the LHC run 2 / Bradu, Benjamin (CERN) ; Rogez, Edouard (CERN) ; Blanco Vinuela, Enrique (CERN) ; Ferlin, Gerard (CERN) ; Tovar-Gonzalez, Antonio (CERN)
This paper presents the improvements made on the cryogenic control system for the LHC beam screens [...]
CERN-ACC-2016-0106.
- 2016. - 9 p.
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2016-07-28
09:00
Beam performance and instrumentation studies for the ProtoDUNE-DP experiment of CENF / Charitonidis, Nikolaos (CERN) ; Karyotakis, Yannis (LAPP (FR)) ; Efthymiopoulos, Ilias (CERN)
In this note, we address the beam performance (particle content, rates) with emphasis on the momentum determination and particle identification methods for the new H2-VLE (Very Low Energy) beam line that will serve the double phase ProtoDUNE experiment (also known as WA105), in the framework of the CENF project. [...]
CERN-ACC-NOTE-2016-0052 ; 27.
- 2016.
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2016-07-19
08:43
Measurements on the SPS 200 MHz Travelling Wave Cavity towards an Impedance Model / Roggen, Toon (CERN) ; Calaga, Rama (CERN) ; Caspers, Fritz (European Scientific Institute (FR)) ; Vollinger, Christine (CERN)
This note discusses the contribution of the SPS 200 MHz TWC (Travelling Wave Cavity) to the SPS longitudinal impedance model. [...]
CERN-ACC-NOTE-2016-0051.
- 2016.
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2016-05-12
16:59
Cryogenics for high-energy particle accelerators: highlights from the first fifty years / Lebrun, Philippe (CERN)
Applied superconductivity has become a key technology for high-energy particle accelerators, allowing to reach higher beam energy while containing size, capital expenditure and operating costs. [...]
CERN-ACC-2016-0033.
- 2016. - 12 p.
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