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Creating Exact Multipolar Fields in Accelerating RF Cavities via an Azimuthally Modulated Design
/ Wroe, Laurence M (JAI, UK) ; Apsimon, Robert J (Cockcroft Inst. Accel. Sci. Tech.) ; Dosanjh, Manjit (JAI, UK ; CERN) ; Sheehy, Suzanne L (JAI, UK ; Melbourne U.)
In this paper, we present a novel method for designing RF structures with specifically tailored multipolar field contributions. This has a range of applications, including the suppression of unwanted multipolar fields or the introduction of wanted terms, such as for quadrupole focusing. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 1154-1157
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.1154-1157
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Publication
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The FONT5 Bunch-by-Bunch Position and Angle Feedback System at ATF2
/ Apsimon, R J (Oxford U., JAI) ; Bett, D R (Oxford U., JAI) ; Burrows, P N (Oxford U., JAI) ; Christian, G B (Oxford U., JAI) ; Constance, B (Oxford U., JAI ; CERN) ; Davis, M R (Oxford U., JAI) ; Gerbershagen, A (Oxford U., JAI ; CERN) ; Perry, C (Oxford U., JAI) ; Resta-Lopez, J (Valencia U., IFIC)
The FONT5 upstream beam-based feedback system at ATF2 is designed to correct the position and angle jitter at the entrance to the ATF2 final-focus system, and also to demonstrate a prototype intra-train feedback system for the International Linear Collider interaction point. We discuss the hardware, from stripline BPMs to kickers, and RF and digital signal processing, as well as presenting results from the latest beam tests at ATF2..
2012 - 9 p.
- Published in : Phys. Procedia 37 (2012) 2063-2071
Elsevier Open Access article: PDF;
In : 2nd International Conference on Technology and Instrumentation in Particle Physics, Chicago, IL, USA, 9 - 14 Jun 2011, pp.2063-2071
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A Low-latency Sub-micron Resolution Stripline Beam Position Monitoring System for Single-pass Beamlines
/ Burrows, P N (Oxford U., JAI) ; Bett, D R (Oxford U., JAI) ; Kraljevic, N Blaskovic (Oxford U., JAI) ; Christian, G B (Oxford U., JAI) ; Davis, M R (Oxford U., JAI) ; Perry, C (Oxford U., JAI) ; Apsimon, R J (CERN) ; Constance, B (CERN) ; Gerbershagen, A (CERN) ; Resta-Lopez, J (Valencia U., IFIC)
A low-latency, sub-micron resolution stripline beam position monitoring system has been developed for use in single-pass beamlines. The fast analogue front-end signal processor is based on a single-stage RF down-mixer and is combined with an FPGA-based system for digitisation and further signal processing. [...]
2012 - 3 p.
- Published in : Conf. Proc.: C1205201 (2012) , pp. MOPPR065
External link: Published from JaCoW
In : 3rd International Particle Accelerator Conference, New Orleans, LA, USA, 20 - 25 May 2012, pp.933-935
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Development of a Turn-by-Turn Beam Position Monitoring System for Multiple Bunch Operation of the ATF Damping Ring
/ Burrows, P N (Oxford U., JAI) ; Bett, D R (Oxford U., JAI) ; Kraljevic, N Blaskovic (Oxford U., JAI) ; Christian, G B (Oxford U., JAI) ; Davis, M R (Oxford U., JAI) ; Perry, C (Oxford U., JAI) ; Apsimon, R J (CERN) ; Constance, B (CERN) ; Gerbershagen, A (CERN) ; Resta-Lopez, J (Valencia U., IFIC)
An FPGA-based monitoring system has been developed to study multi-bunch beam instabilities in the damping ring (DR) of the KEK Accelerator Test Facility (ATF). The system utilises a stripline beam position monitor (BPM) and single-stage down-mixing BPM processor. [...]
2012 - 3 p.
- Published in : Conf. Proc.: C1205201 (2012) , pp. MOPPR064
External link: Published from JaCoW
In : 3rd International Particle Accelerator Conference, New Orleans, LA, USA, 20 - 25 May 2012, pp.930-932
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An FPGA-based Bunch-by-Bunch Position and Angle Feedback System at ATF2
/ Christian, G B (Oxford U., JAI) ; Apsimon, R J (Oxford U., JAI) ; Bett, D R (Oxford U., JAI) ; Burrows, P N (Oxford U., JAI) ; Constance, B (Oxford U., JAI) ; Davis, M R (Oxford U., JAI) ; Gerbershagen, A (Oxford U., JAI) ; Perry, C (Oxford U., JAI) ; Resta Lopez, J (Valencia U.,IFIC)
The FONT5 intra-train feedback system serves as a prototype for an interaction point beam-based feedback system for future electron-positron colliders, such as the International Linear Collider. The system has been tested on the KEK Accelerator Test Facility (ATF) and is deployed to stabilise the beam orbit at the ATF2. [...]
2011
- Published in : Conf. Proc.: C11-05-16.4 (2011) , pp. MOPD80
Published version from JACoW: PDF;
In : 10th European Workshop on Beam Diagnostics and Instrumentation for Particle Accelerators, Hamburg, Germany, 16 - 18 May 2011, pp.233
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THE FONT5 PROTOTYPE ILC INTRA-TRAIN FEEDBACK SYSTEM AT ATF2
/ Apsimon, R J (John Adams Institute for Accelerator Science, University of Oxford, UK) ; Bett, D R (John Adams Institute for Accelerator Science, University of Oxford, UK) ; Burrows, P N (John Adams Institute for Accelerator Science, University of Oxford, UK) ; Christian, G B (John Adams Institute for Accelerator Science, University of Oxford, UK) ; Constance, B (John Adams Institute for Accelerator Science, University of Oxford, UK) ; Perry, C (John Adams Institute for Accelerator Science, University of Oxford, UK) ; Resta-Lopez, J (John Adams Institute for Accelerator Science, University of Oxford, UK)
WP: 9: Technology for normal conducting higher energy linear accelerators
Task: 9.3: Linac & FF Stabilization
We present the design and beam test results of a prototype beam-based digital feedback system for the Interaction Point of the International Linear Collider. [...]
EuCARD-CON-2011-029.
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2011.
Access to fulltext document
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8.
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DESIGN AND INITIAL RESULTS OF A TURN-BY-TURN BEAM POSITION MONITORING SYSTEM FOR MULTIPLE BUNCH OPERATION OF THE ATF DAMPING RING
/ Christian, G B (John Adams Institute for Accelerator Science, University of Oxford, UK) ; Apsimon, R J (John Adams Institute for Accelerator Science, University of Oxford, UK) ; Bett, D R (John Adams Institute for Accelerator Science, University of Oxford, UK) ; Burrows, P N (John Adams Institute for Accelerator Science, University of Oxford, UK) ; Davis, M R (John Adams Institute for Accelerator Science, University of Oxford, UK) ; Gerbershagen, A (John Adams Institute for Accelerator Science, University of Oxford, UK) ; Perry, C (John Adams Institute for Accelerator Science, University of Oxford, UK) ; Constance, B (CERN) ; Resta-Lopez, J (IFIC (CSIC-UV), Valencia, Spain)
WP: 9: Technology for normal conducting higher energy linear accelerators
Task: 9.3: Linac & FF Stabilization
An FPGA-based monitoring system has been developed to study multi-bunch beam instabilities in the damping ring (DR) of the KEK Accelerator Test Facility (ATF), utilising a stripline beam position monitor (BPM) and existing BPM processor hardware. [...]
EuCARD-CON-2011-027.
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2011.
Access to fulltext document
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9.
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Latest Performance Results from the FONT5 Intra-train Beam Position and Angle Feedback System at ATF2
/ Christian, G B (Oxford U., JAI) ; Apsimon, R J (CERN) ; Bett, D R (Oxford U., JAI) ; Blaskovic Kraljevic, N (Oxford U., JAI) ; Burrows, P N (Oxford U., JAI) ; Davis, M R (Oxford U., JAI) ; Gerbershagen, A (CERN) ; Perry, C (Oxford U., JAI) ; Constance, B (CERN) ; Resta-Lopez, J (Valencia U., IFIC)
WP: 9: Technology for normal conducting higher energy linear accelerators
Task: 9.3: Linac & FF Stabilization
A prototype Interaction Point beam-based feedback system for future electron-positron colliders, such as the International Linear Collider, has been designed and tested on the extraction line of the KEK Accelerator Test Facility (ATF). [...]
EuCARD-CON-2011-026.
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2012. - 3 p.
Access to fulltext document - Published version from JaCoW
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The Evaporative Cooling System for the ATLAS Inner Detector
/ Aitree, D ; Anderson, B ; Anderssen, E C ; Akhnazarov, V ; Apsimon, R J ; Barclay, P ; Batchelor, L E ; Bates, R L ; Battistin, M (CERN) ; Bendotti, J (CERN) et al.
This paper describes the evaporative system used to cool the silicon detector structures of the inner detector sub-detectors of the ATLAS experiment at the CERN Large Hadron Collider. [...]
ATL-INDET-PUB-2008-006 ; ATL-COM-INDET-2008-007.
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2008. - 38 p.
Access to fulltext - Access to fulltext - Access to fulltext - SISSA/IOP Open Access article
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