Gain recovery in heavily Irradiated Low Gain Avalanche Detectors by high temperature annealing

Mandić, Igor (avtor), Cindro, Vladimir (avtor), Gorišek, Andrej (avtor), Hiti, Bojan (avtor), Howard, Alissa (avtor), Kljun, Žan (avtor), Kramberger, Gregor (avtor), Maček Kržmanc, Marjeta (avtor), Mikuž, Marko (avtor), Novak, Brigita (avtor)

Studies of annealing at temperatures up to 450 °C with Low Gain Avalanche Detectors (LGAD) irradiated with neutrons are described. It was found that the performance of LGADs irradiated with 1.5e15 n/cm$^2$ was already improved at 5 min of annealing at 250 °C. Isochronal annealing for 30 min in 50 °C steps between 300 °C and 450 °C showed that the largest beneficial effect of annealing is at around 350 °C. Another set of devices was annealed for 60 min at 350 °C and this annealing significantly increased depletion voltage of the gain layer (V$_{gl}$). The effect is equivalent to reducing the effective acceptor removal constant by a factor of ∼ 4. Increase of V$_{gl}$ is the consequence of increased effective space charge in the gain layer caused by formation of electrically active defects or re-activation of interstitial boron atoms.

• Jezik: Angleški jezik
• Ključne besede: particle tracking detectors, radiation-hard detectors, solid state detectors, LGAD, annealing
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FMF - Fakulteta za matematiko in fiziko
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2023
• Št. strani: 6 str.
• Številčenje: Vol. 1055, art. 168553
• PID: 20.500.12556/RUL-153066
• UDK: 5391.
• ISSN pri članku: 0168-9002
• DOI: 10.1016/j.nima.2023.168553
• COBISS.SI-ID: 161709315
• Datum objave v RUL: 15.12.2023

Gradivo je del revije

• Naslov: Nuclear instruments and methods in physics research : Accelerators, spectrometers, detectors and associated equipment
• Skrajšan naslov: Nucl. instrum, methods phys res., Sect. A, Accel.
• Založnik: Elsevier
• ISSN: 0168-9002
• COBISS.SI-ID: 2289668

Licence

• Licenca: CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
• Opis: Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P1-0135
• Naslov: Eksperimentalna fizika osnovnih delcev

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: J1-1699
• Naslov: Razvoj prostorsko občutljivega detektorja časa v eksperimentu ATLAS