Testbeam studies of pre-prototype silicon strip sensors for the LHCb UT upgrade project

Abba, A.; Artuso, M.; Blusk, S.; Britton, T.; Davis, A.; Dendek, A.; Ely, S.; Fu, Jinlin; Gandini, P.; Lionetto, F.; Manning, P. M.; Meadows, B.; Mountain, R.; Neri, N.; Petruzzo, M.; Pikies, M.; Skwarnicki, T.; Szumlak, T.; Wang, J. C.

doi:10.1016/j.nima.2015.10.031

Cited by 6 publications

(9 citation statements)

References 13 publications

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“…However, some of it is likely due to changes in the temporal and spacial charge collection properties in irradiated sensors. This effect has been seen in previous UT test beam studies [5]. middle between two strips (zero in the plot), the efficiency drops to about 88%.…”

Section: Results For the The Type B Sensorsupporting

confidence: 80%

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First Beam Test of UT Sensors with the SALT 3.0 Readout ASIC

Artuso

Blusk

Ely

et al. 2019

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This note presents the results of a beam test conducted at the Fermilab test beam facility in March 2019. The beam test represents the first such test of the UT readout ASIC, SALT 3.0, in a beam with production UT sensors. Two sensors were tested, one an unirradiated pin -n sensor, and the second a n-in-p sensor irradiated to twice the maximum expected fluence. The beam test demonstrates that the SALT 3.0 ASIC meets our specifications, and can be used for the production. Due to specific issues with the data acquisition system that will not be present in the system in LHCb, a higher threshold was used in the beam test, corresponding to about 6σ on the noise. With this higher threshold, the signal-to-noise ratio (S/N) and efficiency are measured. For the unirradiated sensor, a S/N of about 12 is achieved, with a single-hit efficiency of at least 99.5%. For the irradiated sensor, a S/N of about 11 is obtained, with a single-hit efficiency of about 94%. In the final system in LHCb with a proper threshold of about 3-4σ of the noise, we expect to achieve a single-hit efficiency of at least 99.5%.

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Section: Results For the The Type B Sensorsupporting

confidence: 80%

“…Those studies are documented in Refs. [5,6]. In this most recent beam test described here, two sensors were tested.…”

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confidence: 99%

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First Beam Test of UT Sensors with the SALT 3.0 Readout ASIC

Artuso

Blusk

Ely

et al. 2019

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“…3b. An extensive test beam campaign has demonstrated that these features perform well, even after irradiation to the maximum fluences expected [4,5,6,7].…”

Section: Ut Componentsmentioning

confidence: 99%

The LHCb Upstream Tracker Upgrade

Rudolph¹

2020

Proceedings of the 28th International Workshop on Vertex Detectors — PoS(Vertex2019)

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The LHCb experiment is a forward spectrometer at the Large Hadron Collider designed to study the decays of beauty and charm hadrons. During the recently concluded data taking, it produced a vast amount of data, in flavor physics and in additional physics topics that take advantage of the forward acceptance of the LHCb experiment. In the LHC's second long shutdown, a major upgrade of the LHCb detector is being installed and commissioned. The upgraded detector will take data at higher luminosity and will implement a flexible software trigger that requires all the detector components to push out their information at 40 MHz. The Upstream Tracker is a new silicon strip detector placed upstream of the LHCb bending magnet, composed of four planes of silicon microstrip detectors mounted on both sides of vertical structures called staves, providing mechanical support and CO 2 evaporative cooling. Four different silicon sensor designs are used to handle the varying occupancy over the detector acceptance. A dedicated front-end ASIC, the SALT chip, provides pulse shaping with fast baseline restoration, digitization via 6-bit ADCs, and digital signal processing providing pedestal and common-mode noise subtraction as well as zerosuppression. Near detector electronics implements the transformation to optical signals that are transmitted to the remote data acquisition system and regulates low-voltage power distribution. In this contribution, the performance of the individual detector components is reviewed, with particular emphasis on studies of the sensor-SALT hybrid modules and instrumented staves.

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“…The irradiated mini-sensors were wirebonded to Beetle chips that were designed for the current silicon strip detectors [12], and read out with an Alibava DAQ system [13,14]. The sensors were tested in an 180 GeV proton beam at CERN [15]. A TimePix3-based telescope was used to provide tracking precision of ∼2 µm on the detector under test [16].…”

Section: Silicon Sensor Randdmentioning

confidence: 99%

LHCb upstream tracker upgrade

Wang¹

2015

Proceedings of 24th International Workshop on Vertex Detectors — PoS(VERTEX2015)

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The upgraded LHCb detector will run at an instantaneous luminosity of 2 × 10 33 cm −2 s −1 and have 40 MHz readout. In order to cope with the higher data rate and faster readout speed the silicon microstrip detector located upstream of the dipole magnet will be replaced by the Upstream Tracker (UT). This system consists of four silicon microstrip planes, read out with a custom ASIC (SALT), which is currently being developed. Considerable progress has been achieved on the UT design. In addition a program of irradiation and test beam studies has been started. Key findings will be summarized.

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Testbeam studies of pre-prototype silicon strip sensors for the LHCb UT upgrade project

Cited by 6 publications

References 13 publications

First Beam Test of UT Sensors with the SALT 3.0 Readout ASIC

First Beam Test of UT Sensors with the SALT 3.0 Readout ASIC

The LHCb Upstream Tracker Upgrade

LHCb upstream tracker upgrade

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