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Final Acceptance Testing of the CERN SPS Electrostatic Septa
/ Balhan, B (CERN) ; Barlow, R A (CERN) ; Borburgh, J (CERN) ; Farricker, A (CERN) ; Mo, J A (CERN) ; Prost, A (CERN)
In the framework of the LHC Injector Upgrade (LIU) project, the high field electrostatic septa (so-called ZS) have been upgraded to comply with the new requirements. Prior to their installation in the SPS accelerator in 2020, the septa were tested to verify their final performance. [...]
2021 - 4 p.
- Published in : 10.1109/ISDEIV46977.2021.9587034
In : 29th International Symposium on Discharges and Electrical Insulation in Vacuum, Online, 26 - 30 Sep 2021, pp.454-457
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Final Results on the CERN PS Electrostatic Septa Consolidation Program
/ Borburgh, Jan ; Balhan, Bruno ; Bobbio, Piero ; Carlier, Etienne ; Hourican, Michael ; Masson, Thierry ; Müller, Tania ; Prost, Antoine ; Crescenti, Massimo
The CERN PS electrostatic septum consolidation program is coming to completion after almost 4 years of development. The program was started to fulfil the increased requirements on vacuum performance and the need to reduce the time necessary for maintenance interventions. [...]
CERN-AB-2003-041-BT.-
Geneva : CERN, 2003 - 4 p.
Access to fulltext document: PDF; External link: Published version from JACoW
In : 20th IEEE Particle Accelerator Conference, Portland, OR, USA, 12 - 16 May 2003, pp.1643
- Please contact the library if you need to access this document.
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Experimental Results of Low-Z Materials as a High Voltage Septum Anode
/ Borburgh, J (CERN) ; Balhan, B (CERN) ; Goddard, B (CERN) ; Jorat, L (CERN) ; Prost, A (CERN)
In the framework of the Physics Beyond Colliders study (PBC) at CERN, considerable efforts are being made to reduce the beam loss and remnant activation of the slow extraction equipment in the SPS LSS2 region. Simulations have demonstrated that changing the material of the septum anode, presently consisting of an array of WRe wires, for a low-Z alternative could reduce the overall activation of the extraction region in the order of 30%. [...]
2021 - 4 p.
- Published in : 10.1109/ISDEIV46977.2021.9586893
In : 29th International Symposium on Discharges and Electrical Insulation in Vacuum, Online, 26 - 30 Sep 2021, pp.446-449
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A new spark detection system for the electrostatic septa of the SPS North (experimental) Area
/ Barlow, R A (CERN) ; Balhan, B (CERN) ; Borburgh, J (CERN) ; Carlier, E (CERN) ; Chanavat, C (CERN) ; Fowler, T (CERN) ; Pinget, B (CERN)
Electrostatic septa (ZS) are used in the extraction of the particle beams from the CERN SPS to the North Area experimental zone. These septa employ high electric fields, generated from a 300 kV power supply, and are particularly prone to internal sparking around the cathode structure. [...]
CERN-ACC-2013-0238.-
Geneva : CERN, 2014 - 4 p.
Fulltext: PDF; External link: Published version from JACoW
In : 14th International Conference on Accelerator & Large Experimental Physics Control Systems, San Francisco, CA, USA, 6 - 11 Oct 2013, pp.moppc064
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A new spark detection system for the electrostatic septa of the SPS North (experimental) Area
Reference: CERN-ACC-POSTER-2013-0001
Created: 2013. -1 p
Creator(s): Barlow, R A; Balhan, B; Borburgh, J; Carlier, E; Chanavat, C [...]
Electrostatic septa (ZS) are used in the extraction of the particle beams from the CERN SPS to the North Area experimental zone. These septa employ high electric fields, generated from a 300 kV power supply, and are particularly prone to internal sparking around the cathode structure. This sparking degrades the electric field quality, consequently affecting the extracted beam, vacuum and equipment performance. To mitigate these effects, a Spark Detection System (SDS) has been realised, which is based on an industrial SIEMENS S7-400 programmable logic controller and deported Boolean processors modules interfaced through a PROFINET fieldbus. The SDS interlock logic uses a moving average spark rate count to determine if the ZS performance is acceptable. Below a certain spark rate it is probable that the ZS septa tank vacuum can recover, thus avoiding transition into a\nstate where rapid degradation would occur. Above this level an interlock is raised and the high voltage is switched off. Additionally, all spark signals acquired by the SDS are sent to a front-end computer to allow further analysis such as calculation\nof spark rates and production of statistical data.
Presented at 14th International Conference on Accelerator & Large Experimental Physics Control Systems San Francisco, CA, USA 6 - 11 Oct 2013 JACoW 2014 , (list conference papers)
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Design and Development of Kickers and Septa for Medaustron
/ Borburgh, J (CERN) ; Balhan, B (CERN) ; Barnes, M J (CERN) ; Fowler, T (CERN) ; Hinterschuster, F (Vienna, Tech. U.) ; Hourican, M (CERN) ; Kramer, T ; Palm, M (CERN) ; Prost, A (CERN) ; Sermeus, L (CERN) et al.
The MedAustron facility, to be built in Wiener Neustadt (Austria), will provide protons and ions for both cancer therapy and research. Different types of bumpers, septa and kickers will be used in the low energy beam transfer line, the synchrotron and the high energy extraction lines.They are presently being designed in collaboration with CERN. [...]
CERN-ATS-2010-132.-
Geneva : CERN, 2010 - 4 p.
Fulltext: PDF; External link: Published version from JACoW
In : 1st International Particle Accelerator Conference, Kyoto, Japan, 23 - 28 May 2010, pp.THPEB032
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Improvement of the CERN SPS electrostatic septa ion traps
/ Balhan, B (CERN) ; Barlow, R A (CERN) ; Borburgh, J (CERN) ; Raffaele, G (Bari Polytechnic)
At CERN, the SPS synchrotron is equipped with a slow extraction channel towards the fixed target beam lines in the North Area This channel includes five consecutive electrostatic septa, where the field free region and the active high field region are separated by an array of tungsten-rhenium wires. The field-free region provides for the circulating beam, while the high field region is used to deflect the extracted beam. [...]
2016 - 4 p.
- Published in : 10.1109/DEIV.2016.7764034
In : The 27th International Symposium on Discharges and Electrical Insulation in Vacuum (27th ISDEIV), Suzhou, China, 18 - 23 Sep 2016, pp.7764034
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Design and Construction of the LEIR Injection Septa
/ Borburgh, J ; Balhan, B ; Bobbio, P ; Carlier, E ; Crescenti, M ; Hourican, M ; Masson, T ; Müller, T ; Prost, A
The Low Energy Ion Ring (LEIR) transforms long pulses from Linac 3 into high brilliance ion bunches for LHC by means of multi-turn injection, electron cooling and accumulation. The LEIR injection comprises a magnetic DC septum followed by an inclined electrostatic septum. [...]
LHC-Project-Report-810; CERN-LHC-Project-Report-810.-
Geneva : CERN, 2005 - 4 p.
Access to fulltext document: PDF; External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.2690
- Please contact the library if you need to access this document.
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Direct Drive and Eddy Current Septa Magnet Designs for CERN's PSB Extraction at 2 GeV
/ Szoke, Z (CERN) ; Atanasov, M G (CERN) ; Balhan, B (CERN) ; Baud, C (CERN) ; Borburgh, J (CERN) ; Hourican, M (CERN) ; Masson, T (CERN) ; Prost, A (CERN)
In the framework of the LIU project, new septa magnets have been designed between CERN's PS booster (PSB) extraction and PS injection. The upgraded devices are to deal with the increased beam energy from 1.4 to 2 GeV at extraction of the PSB. [...]
2016 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 26 (2016) 4103205
In : 24th International Conference on Magnet Technology, Seoul, Korea, 18 - 23 Oct 2015, pp.4103205
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