Secondary particle acquisition system for the CERN beam wire scanners upgrade

Sirvent, J.L.; Dehning, B.; Emery, Jonathan D.; Diéguez, Ángel

doi:10.1088/1748-0221/10/04/c04021

Cited by 4 publications

(5 citation statements)

References 9 publications

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“…5. 16. The oscillations that are recorded by the pickup are very fast with a rise time of less than 500 turns, as in the simulations.…”

Section: Beam Effects For Strong Space Chargesupporting

confidence: 55%

“…Until the end of Run 2, 8 wire scanners were located at the straight section of the second period (2L1), one for each ring and each plane (horizontal and vertical). During LS2, 8 additional wire scanners with an improved design (LIU-WS) [15,16] were installed for each ring at 4L1 for the horizontal plane and at 11L1 for the vertical plane as part of the LIU project.…”

Section: Beam Profilesmentioning

confidence: 99%

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Optimization of the high brightness beam performance of the CERN PSB with H-injection

Prebibaj

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In the framework of the LHC Injectors Upgrade Project (LIU), the CERN Proton Synchrotron Booster (PSB) went through major upgrades resulting in new effects to study, challenges to overcome and new parameter regimes to explore. To assess the achievable beam brightness limit of the machine, a series of experimental and computational studies in the transverse planes were performed. In particular, the new injection scheme induces optics perturbations that are strongly enhanced near the half-integer resonance. In this thesis, methods for dynamically measuring and correcting these perturbations and their impact on the beam performance will be presented. Additionally, the quality of the transverse beam distributions and strategies for improvement will be addressed. Finally, the space charge effects when dynamically crossing the half-integer resonance will be characterized. The results of these studies and their broader significance beyond the PSB will be discussed.

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“…5. 16. The oscillations that are recorded by the pickup are very fast with a rise time of less than 500 turns, as in the simulations.…”

Section: Beam Effects For Strong Space Chargesupporting

confidence: 55%

Section: Beam Profilesmentioning

confidence: 99%

Optimization of the high brightness beam performance of the CERN PSB with H-injection

Prebibaj

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“…A previous article describes the motivation behind the architecture choice [4]. A custom radiation tolerant front-end has been designed to resist a total ionization dose (TID) of 1KGy over the operational life of the system (10 years with an estimated TID of 100Gy/year).…”

Section: Secondary Shower Acquisition System Architecturementioning

confidence: 99%

High dynamic range diamond detector acquisition system for beam wire scanner applications

et al. 2016

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The CERN Beam Instrumentation group has been working during the last years on the beam wire scanners upgrade to cope up with the increasing requirements of CERN experiments. These devices are used to measure the beam profile by crossing a thin wire through a circulating beam, the resulting secondary particles produced from beam/wire interaction are detected and correlated with the wire position to reconstruct the beam profile. The upgraded secondary particles acquisition electronics will use polycrystalline chemical vapour deposition (pCVD) diamond detectors for particle shower measurements, with low noise acquisitions performed on the tunnel, near the detector. The digital data is transmitted to the surface through an optical link with the GBT protocol. Two integrator ASICs (ICECAL and QIE10) are being characterized and compared for detector readout with the complete acquisition chain prototype. This contribution presents the project status, the QIE10 front-end performance and the first measurements with the complete acquisition system prototype. In addition, diamond detector signals from particle showers generated by an operational beam wire scanner are analysed and compared with an operational system. K: Diamond Detectors; Front-end electronics for detector readout; Detector control systems (detector and experiment monitoring and slow-control systems, architecture, hardware, algorithms, databases); Beam-line instrumentation (beam position and profile monitors; beamintensity monitors; bunch length monitors) 1Corresponding author.

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“…The principle of operation of a WS for transverse beam measurements is based on correlating the wire position to an intensity signal which is proportional to the particles traversing the wire for each scan step or fast sweep [12]. The system resolution is ultimately limited by the wire diameter and in many cases its use is limited to a maximum beam density above which the wire can melt or sublimate and thus needs to be replaced [11,13]. Despite these limitations, the intrinsic accuracy of this technique makes it attractive for many applications [14,15].…”

Section: Introductionmentioning

confidence: 99%

Design and fabrication of 1D and 2D optical scanner for electron beams using color centre generation

et al. 2018

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The present paper focuses on the design and fabrication of 1D and 2D optical scanners to characterize the spatial profile of electron beams. The basis of the two systems is the generation of color centers in glass plates by irradiation, followed by the scanning of the plates, illuminated by a fixed power source (LED) with a maximum power of 3 W in the spectral range of 520-560 nm, with a TCS3200 sensor. In both systems, 6 mm thick glass blades (SiO 2 : 76%) are used instead of expensive dosimetric films. The experimental results section first focuses on the validation and calibration accuracy of the effective absorbance of the irradiated glass in the LED spectral range with a radiation dose of up to 20 kGy. Then, it describes how the 1D optical scanner was used to scan the spatial profile obtained under the scanning horn of a Rhodotron accelerator with a maximum radiation dose of 7.8 kGy. The experimental results obtained from this method are entirely consistent with the results of other research studies, while this method is more cost-efficient and accurate compared to the previously reported methods. The 2D optical scanner was also used to accurately measure the spatial profile of the Rhodotron electron beam in static mode by scanning the color centers generated by irradiation. K: Beam Optics; Beam-line instrumentation (beam position and profile monitors; beamintensity monitors; bunch length monitors); Interaction of radiation with matter 1Corresponding author.

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Secondary particle acquisition system for the CERN beam wire scanners upgrade

Cited by 4 publications

References 9 publications

Optimization of the high brightness beam performance of the CERN PSB with H-injection

Optimization of the high brightness beam performance of the CERN PSB with H-injection

High dynamic range diamond detector acquisition system for beam wire scanner applications

Design and fabrication of 1D and 2D optical scanner for electron beams using color centre generation

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