ATLAS pixel opto-electronics

Arms, K.; Gan, K. K.; Jackson, P.; Johnson, M.; Kagan, H.; Kass, R.; Rahimi, A. M.; Rush, C.; Smith, Shane; Ter-Antonian, R.; Zoeller, M.; Buchholz, P.; Holder, M.; Roggenbuck, A.; Schade, P.; Ziółkowski, M.

doi:10.1016/j.nima.2005.07.070

Cited by 48 publications

(31 citation statements)

References 10 publications

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“…are performed more and more frequently. Some examples are given in [5] and [6]. Along with these experiments comes the request for a more precise characterization of the beam profile, the beam intensity and the particle composition of the radiation field.…”

mentioning

confidence: 99%

Dosimetry Assessments in the Irradiation Facilities at the CERN-PS Accelerator

Gläser

Ravotti

Moll

2006

IEEE Trans. Nucl. Sci.

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Abstract-At the CERN Proton Synchrotron (PS) accelerator complex, two experimental zones allow the irradiation of samples in a 23 GeV pure proton beam and in a secondary particle environment dominated by 1-MeV neutrons and gamma rays. In this paper, a review of the operative irradiation systems named IRRAD1 and IRRAD2 is presented, as well as the improvements in the techniques used for the beam characterizations and dosimetry.

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mentioning

confidence: 99%

Dosimetry Assessments in the Irradiation Facilities at the CERN-PS Accelerator

Gläser

Ravotti

Moll

2006

IEEE Trans. Nucl. Sci.

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“…The optical data-links contain arrays of 8 or 16 VCSEL devices [14,31]. The bias voltage which controls optical power can only be adjusted for the data-link as a whole.…”

Section: Pixel Detector Calibrationmentioning

confidence: 99%

The ATLAS Inner Detector commissioning and calibration

Aad¹,

Abbott²,

Abdallah³

et al. 2010

Eur. Phys. J. C

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100

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The ATLAS Inner Detector is a composite tracking system consisting of silicon pixels, silicon strips and straw tubes in a 2 T magnetic field. Its installation was completed in August 2008 and the detector took part in data-taking with single LHC beams and cosmic rays. The initial detector operation, hardware commissioning and insitu calibrations are described. Tracking performance has been measured with 7.6 million cosmic-ray events, collected using a tracking trigger and reconstructed with modular pattern-recognition and fitting software. The intrinsic hit efficiency and tracking trigger efficiencies are close to 100%. Lorentz angle measurements for both electrons and holes, specific energy-loss calibration and transition radiation turn-on measurements have been performed. Different alignment techniques have been used to reconstruct the detector geometry. After the initial alignment, a transverse impact parameter resolution of 22.1 ± 0.9 µm and a relative momentum resolution σ p /p = (4.83 ± 0.16) ×

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“…The PIN arrays were all fabricated by one vendor, Truelight, and the VCSEL arrays were fabricated by three vendors, Optowell (AM85-1N112), Advanced Optical Components (HFE8012-101), and ULM Photonics (two varieties, 5 and 10 Gb/s, ULM850-05-TN-B0112U and ULM850-10-TN-N0112U). On the opto-boards, each of the PIN and VCSEL arrays coupled to radiationhard ASICs produced for the current pixel optical link [1], the DORIC (Digital Opto Receiver Integrated Circuit) and VDC (VCSEL Driver Chip). Furthermore, the opto-boards were mounted on a shuttle system which enabled us to easily move in and out of the beam for annealing of the VCSEL arrays.…”

Section: Radiation Hardness Of Pin and Vcsel Arraysmentioning

confidence: 99%

“…The increased data rate and radiation level will pose new challenges for a tracker situated close to the interaction region. The present optical link [1] of the ATLAS pixel detector [2] is mounted on a patch panel instead of directly on a pixel module. This separation greatly reduces the radiation level at the optical modules (opto-boards) and simplifies the design and production of both the pixel modules and optoboards.…”

Section: Introductionmentioning

confidence: 99%

Radiation-hard optical link for SLHC

Gan

Fernando

Kagan

et al. 2008

Nuclear Instruments and Methods in Physics Research Section A:

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Abstract. We study the feasibility of fabricating an optical link for the SLHC ATLAS silicon tracker based on the current pixel optical link architecture. The electrical signals between the current pixel modules and the optical modules are transmitted via micro-twisted cables. The optical signals between the optical modules and the data acquisition system are transmitted via radiation-hard/low-bandwidth SIMM fibres fusion spliced to radiation-tolerant/medium-bandwidth GRIN fibres. The link has several nice features. We have measured the bandwidths of the micro twisted-pair cables to be ~ 1 Gb/s and the fusion spliced fibre ribbon to be ~ 2 Gb/s. We have irradiated PIN and VCSEL arrays with 24 GeV protons and find the arrays can operate up to the SLHC dosage. We have also demonstrated the feasibility of fabricating a novel opto-pack for housing VCSEL and PIN arrays with BeO as the substrate.

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ATLAS pixel opto-electronics

Cited by 48 publications

References 10 publications

Dosimetry Assessments in the Irradiation Facilities at the CERN-PS Accelerator

Dosimetry Assessments in the Irradiation Facilities at the CERN-PS Accelerator

The ATLAS Inner Detector commissioning and calibration

Radiation-hard optical link for SLHC

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