CERN Accelerating science

Technologies and Systems

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2017-04-03
14:39
Measurement Report for the PS-boosterWire Scanner / Vollinger, Christine (CERN) ; Kaltenbacher, Thomas Roland (Universitaet Bern (CH)) ; Kramer, Patrick (Rheinisch-Westfaelische Tech. Hoch. (DE))
This Note discusses the EM-measurements carried out on the prototype of the PS-Booster wire scanner. [...]
CERN-ACC-NOTE-2017-0022.
- 2017. - 4 p.
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2017-03-30
12:14
LHC MD 1279: Bunch Flattening in Physics / Timko, Helga (CERN) ; Baudrenghien, Philippe (CERN) ; Esteban Muller, Juan ; Shaposhnikova, Elena (CERN)
Vertex reconstruction is not accurate enough for LHCb when the bunch length in physics shrinks below about 0.9 ns. [...]
CERN-ACC-NOTE-2017-0019.
- 2017. - 13 p.
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2017-03-30
12:03
LHC MD 1087: Controlled Longitudinal Emittance Blow-up with Short Bunches / Timko, Helga (CERN) ; Baudrenghien, Philippe (CERN) ; Esteban Muller, Juan ; Jaussi, Michael (CERN) ; Lasheen, Alexandre (CERN) ; Shaposhnikova, Elena (CERN)
The aim of the MD was to study the controlled longitudinal emittance blow-up applied during the ramp with bunches that are slightly shorter than operational. [...]
CERN-ACC-NOTE-2017-0018.
- 2017. - 7 p.
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2017-03-30
11:33
LHC MD 652: Coupled-Bunch Instability with Smaller Emittance (all HOMs) / Esteban Muller, Juan ; shaposhnikova, Elena (CERN) ; Timko, Helga (CERN)
The aim of the MD was to measure the coupled-bunch stability from all HOM impedances, with a reduced longitudinal emittance in order to explore the HL-LHC conditions. [...]
CERN-ACC-NOTE-2017-0017.
- 2017. - 6 p.
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2017-03-30
11:23
LHC MD 232: Longitudinal Impedance Evaluation / Esteban Muller, Juan ; Timko, Helga (CERN) ; Baudrenghien, Philippe (CERN) ; Shaposhnikova, Elena (CERN)
The aim of the MDstudies presented here was to evaluate the imaginary part of the longitudinal impedance of the LHC by means of synchrotron frequency shift measurements [...]
CERN-ACC-NOTE-2017-0016.
- 2017. - 6 p.
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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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