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TDI - past observations and improvements for 2016
/ Lechner, A (CERN) ; Barnes, M J (CERN) ; Bartmann, W (CERN) ; Biancacci, N (CERN) ; Bracco, C (CERN) ; Bregliozzi, G (CERN) ; Butcher, M (CERN) ; Muller, J Esteban (CERN) ; Folch, R (CERN) ; Gentini, L (CERN) et al.
In Run 1, the LHC injection absorbers (TDIs) were affected by several anomalies
including structural damage of the beam screens and elastic deformations of the
jaws due to heating during fills. Other issues became apparent in 2015, like
excessive vacuum spikes, which gave rise to several beam dumps, as well as
quality issues affecting the hBN absorber blocks. [...]
Geneva : CERN, 2016 - 8 p.
- Published in : (2016) , pp. 123-130
Fulltext: PDF;
In : 6th Evian Workshop on LHC beam operation, Evian Les Bains, France, 15 - 17 Dec 2015, pp.123-130
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New Generation CERN LHC Injection Dump - Assembly and Installation (TDIS)
/ Carbajo Perez, David (CERN) ; Berthomé, Emmanuel (CERN) ; Bertone, Caterina (CERN) ; Biancacci, Nicolo (CERN) ; Bracco, Chiara (CERN) ; Bregliozzi, Giuseppe (CERN) ; Bulat, Bartosz (CERN) ; Cadiou, Cyril (CERN) ; Calviani, Marco (CERN) ; Cattenoz, Gregory (CERN) et al.
During CERN’s LS2, several upgrades were performed to beam intercepting devices in the framework of the HL-LHC Project. Upgraded equipment includes two internal beam dumps (TDIS) intended for machine protection located at the injection points from the SPS to the LHC. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 3548-3551
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.3548-3551
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Operational Feedback and Analysis of Current and Future Designs of the Injection Protection Absorbers in the Large Hadron Collider at CERN
/ Carbajo Perez, David (CERN) ; Biancacci, Nicolo (CERN) ; Bracco, Chiara (CERN) ; Bregliozzi, Giuseppe (CERN) ; Calviani, Marco (CERN) ; Frankl, Matthias (CERN) ; Gentini, Luca (CERN) ; Gilardoni, Simone (CERN) ; Iadarola, Giovanni (CERN) ; Lamas Garcia, Inigo (CERN) et al.
Two injection protection absorbers, so-called TDIs (Target Dump Injection), are installed close to Interaction Points IP2 and IP8 of the Large Hadron Collider (LHC) right downstream of the injection kicker magnets (MKI). Malfunction or timing errors in the latter lead to wrong steering of the beam, which must then be intercepted by the TDI to avoid downstream equipment (which includes superconducting magnets) damage. [...]
CERN-ACC-2017-174.-
2017 - 4 p.
- Published in : 10.18429/JACoW-IPAC2017-WEPVA108
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.WEPVA108
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LHC Injection Protection Devices, Thermo-mechanical Studies through the Design Phase
/ Lamas Garcia, Inigo (CERN) ; Biancacci, Nicolo (CERN) ; Bregliozzi, Giuseppe (CERN) ; Calviani, Marco (CERN) ; Frankl, Matthias (CERN) ; Gentini, Luca (CERN) ; Gilardoni, Simone (CERN) ; Lechner, Anton (CERN) ; Perillo-Marcone, Antonio (CERN) ; Salvant, Benoit (CERN) et al.
The TDI is a beam intercepting device installed on the two injection lines of the LHC. Its function is to protect the superconducting machine elements during injection in the case of a malfunction of the injection kickers. [...]
CERN-ACC-2016-153.-
2016 - 4 p.
- Published in : 10.18429/JACoW-IPAC2016-THPMY019
Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.THPMY019
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Fulltext
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MKI performance during 2016 and plans for EYETS
/ Barnes, M J (CERN) ; Bartmann, W (CERN) ; Bracco, C (CERN) ; Ducimetiere, L (CERN) ; Goddard, B (CERN) ; Bregliozzi, G (CERN) ; Cid, L Vega (CERN) ; Vallgren, C Yin (CERN) ; Vlachodimitropoulos, V (CERN) ; Weterings, W (CERN)
Substantial upgrades were carried out to the MKI beam screen during LSl: MKI heating has not lirrrited LHC operation since LSl, and is not expected to do so during Run 2. Similarly, during LSl, the vacuum systems on the interconnects between MKl magnets were upgraded: as a result there haven't been any issues with SIS vacuum thresholds on the interconnects between adjacent MKls. [...]
Geneva : CERN, 2017 - 6 p.
- Published in : (2017) , pp. 175-180
Fulltext: PDF;
In : 7th Evian Workshop on LHC beam operation, Evian Les Bains, France, 13 - 15 Dec 2016, pp.175-180
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Beam induced RF heating
/ Salvant, B (CERN) ; Aberle, O (CERN) ; Arduini, G (CERN) ; Assmann, R (CERN) ; Baglin, V (CERN) ; Barnes, M J (CERN) ; Bartmann, W (CERN) ; Baudrenghien, P (CERN) ; Berrig, O (CERN) ; Bracco, C (CERN) et al.
After the 2011 run, actions were put in place during the 2011/2012 winter stop to limit beam induced radio frequency (RF) heating of LHC components. However, some components could not be changed during this short stop and continued to represent a limitation throughout 2012. [...]
Geneva : CERN, 2012 - 10 p.
- Published in : (2012) , pp. 109-118
Fulltext: PDF;
In : 4th Evian Workshop on LHC beam operation, Evian-les-Bains, France, 17 - 20 Dec 2012, pp.109-118
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