Measurement results of the MALTA monolithic pixel detector

Schioppa, E. J.; Tortajada, Ignacio Asensi; Berdalovic, I.; Bortoletto, D.; Cardella, R.; Dachs, F.; Dao, V.; Acedo, Leyre Flores Sanz de; Freeman, P. M.; Hemperek, T.; Hirono, T.; Hiti, B.; Kugathasan, T.; Tobon, C. A. Marin; Moustakas, Konstantinos; Serra, I.D. Caceido; Munker, Ruth Magdalena; Pernegger, H.; Piro, F.; Riedler, P.; Rymaszewski, P.; Sharma, A.; Argemi, L. Simon; Snoeys, W.; Sánchez, Carlos Solans; Wang, T.; Wermes, N.; Worm, Steven

doi:10.1016/j.nima.2019.162404

Cited by 17 publications

(17 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It features an asynchronous readout with a clock-less matrix architecture, and 2-3 collection electrode size [2,3]. The first prototypes showed poor lateral field after irradiation [4,5] for which additional process modifications were necessary, namely one with an additional extra deep p-well (EDPW) and the other with a gap in the n-layer blanket (NGAP). These were studied on the Mini-MALTA prototype that is a 5 × 1.7 mm 2 DMAPS demonstrator, with 64 × 16 pixels of the same size of the MALTA, that showed full efficiency in particle beam tests after 1e15 n eq /cm 2 at 200 electrons threshold and 6 V bias on sectors with enlarged transistors [6].…”

Section: The Malta Prototypesmentioning

confidence: 99%

Radiation hard monolithic CMOS sensors with small electrodes for the HL-LHC and beyond

Sánchez¹,

Allport²,

Tortajada³

et al. 2021

Proceedings of 40th International Conference on High Energy Physics — PoS(ICHEP2020)

View full text Add to dashboard Cite

The upgrade of tracking detectors for experiments at the HL-LHC and future colliders requires the development of novel radiation hard silicon sensors. We target the replacement of hybrid pixel detectors with Depleted Monolithic Active Pixel Sensors (DMAPS) that are radiation hard monolithic CMOS sensors. We designed, manufactured and tested DMAPS in the TowerJazz 180 nm CMOS imaging technology with small electrodes pixel designs, that have a pixel pitch well below the current hybrid pixel detectors, and less multiple scattering due to a reduced total silicon thickness. In this document we present the recent results from these sensors manufactured on Czochralski silicon substrates in terms of cluster size, impact on tracking and time resolution from measurements carried out at beam tests on irradiated samples at 1e15 1 MeV n eq /cm 2 .

show abstract

Section: The Malta Prototypesmentioning

confidence: 99%

Radiation hard monolithic CMOS sensors with small electrodes for the HL-LHC and beyond

Sánchez¹,

Allport²,

Tortajada³

et al. 2021

Proceedings of 40th International Conference on High Energy Physics — PoS(ICHEP2020)

View full text Add to dashboard Cite

show abstract

“…For the unirradited sample, we Figure 2. In-pixel efficiency measured at SPS with 180 GeV pions [6,7]. measured good efficiencies with an approximate threshold of 250 electrons (see figure 2).…”

Section: Maltamentioning

confidence: 99%

MALTA: a Monolithic Active Pixel Sensor for tracking in ATLAS

Freeman¹

2020

J. Inst.

Self Cite

View full text Add to dashboard Cite

The MALTA team is developing the MALTA chip, a depleted monolithic active pixel sensor (DMAPS) implemented in the TowerJazz 180 nm modified CMOS process for tracking applications in high energy particle physics experiments such as the ATLAS experiment at the LHC. At the INFIERI school in Wuhan, China, I presented results on what was then the latest prototype of the chip, the MiniMALTA. So far measurements have shown promising that suggest that the chip is operational after irradiation doses comparable to those predicted for the outer pixel layers of the proposed inner tracker (ITk) upgrade in ATLAS.

show abstract

“…It features low noise (<20 ENC) and low power consumption (<70 mW/cm 2 ).The key difference between MALTA and the other TowerJazz DMAPS for the ITk, Monopix, is the asynchronous read out architecture which features a 40 bit parallel data bus for high hit rates, and an overall read out speed of 5 Gbit/s [3]. (c) MALTA in-pixel efficiency, threshold = 400 e − , φ = 5e14n eq /cm 2 [4]. Previous efficiency measurements in 180 GeV pion test beams at SPS at CERN showed that the sensor was not sufficiently radiation hard.…”

Section: Previous Malta Measurementsmentioning

confidence: 99%

“…In-pixel efficiency measured at SPS with 180 GeV pions[4]. The results from the entire chip have been averaged into maps of of 2 × 2 pixels.…”

mentioning

confidence: 99%

Recent measurements on MiniMALTA, a radiationhard CMOS sensor with small collection electrodesfor ATLAS

Freeman¹,

Allport²,

Andreazza³

et al. 2020

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

Self Cite

View full text Add to dashboard Cite

Measurement results of the MALTA monolithic pixel detector

Cited by 17 publications

References 4 publications

Radiation hard monolithic CMOS sensors with small electrodes for the HL-LHC and beyond

Radiation hard monolithic CMOS sensors with small electrodes for the HL-LHC and beyond

MALTA: a Monolithic Active Pixel Sensor for tracking in ATLAS

Recent measurements on MiniMALTA, a radiationhard CMOS sensor with small collection electrodesfor ATLAS

Contact Info

Product

Resources

About