Reasons for high charge collection efficiency of silicon detectors at HL-LHC fluences

2019 ◽  
Vol 924 ◽  
pp. 192-197 ◽  
Author(s):  
G. Kramberger
Keyword(s):  
Collection Efficiency ◽  
Charge Collection ◽  
Silicon Detectors ◽  
Charge Collection Efficiency ◽  
High Charge

scholarly journals Low Voltage High-Energy α-Particle Detectors by GaN-on-GaN Schottky Diodes with Record-High Charge Collection Efficiency

Sensors ◽  
2019 ◽  
Vol 19 (23) ◽  
pp. 5107 ◽  
Author(s):  
Sandupatla ◽  
Arulkumaran ◽  
Ranjan ◽  
Ing ◽  
Murmu ◽  
...  
Keyword(s):  
Low Voltage ◽  
Collection Efficiency ◽  
Schottky Diodes ◽  
High Energy ◽  
Charge Collection ◽  
Charge Carrier Density ◽  
Free Standing ◽  
Charge Collection Efficiency ◽  
High Charge ◽  
Drift Layer

A low voltage (–20 V) operating high-energy (5.48 MeV) α-particle detector with a high charge collection efficiency (CCE) of approximately 65% was observed from the compensated (7.7 × 1014 /cm3) metalorganic vapor phase epitaxy (MOVPE) grown 15 µm thick drift layer gallium nitride (GaN) Schottky diodes on free-standing n+-GaN substrate. The observed CCE was 30% higher than the bulk GaN (400 µm)-based Schottky barrier diodes (SBD) at –20 V. This is the first report of α–particle detection at 5.48 MeV with a high CCE at –20 V operation. In addition, the detectors also exhibited a three-times smaller variation in CCE (0.12 %/V) with a change in bias conditions from –120 V to –20 V. The dramatic reduction in CCE variation with voltage and improved CCE was a result of the reduced charge carrier density (CCD) due to the compensation by Mg in the grown drift layer (DL), which resulted in the increased depletion width (DW) of the fabricated GaN SBDs. The SBDs also reached a CCE of approximately 96.7% at –300 V.

scholarly journals Measurement of the charge collection efficiency after heavy non-uniform irradiation in BABAR silicon detectors

2005 ◽  
Vol 52 (4) ◽  
pp. 1054-1060 ◽  
Author(s):  
S. Bettarini ◽  
M. Bondioli ◽  
L. Bosisio ◽  
G. Calderini ◽  
C. Campagnari ◽  
...  
Keyword(s):  
Collection Efficiency ◽  
Charge Collection ◽  
Silicon Detectors ◽  
Charge Collection Efficiency
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