Jul 6 – 13, 2022
Bologna, Italy
Europe/Rome timezone

Status of the CSM FPGA Irradiation Test for the HL-LHC ATLAS Muon Spectrometer Upgrade

Jul 8, 2022, 7:05 PM
1h 25m
Bologna, Italy

Bologna, Italy

Palazzo della Cultura e dei Congressi
Poster Operation, Performance and Upgrade (Incl. HL-LHC) of Present Detectors Poster Session


Jem Guhit


The increased radiation environment and data rate for the High Luminosity Large Hadron Collider (HL-LHC) require upgrades to the readout electronics for the Muon Spectrometer ( MS ) electronics. In this talk, I will present the status of the irradiation studies for the chamber service module (CSM). The CSM is a custom-built front-end electronics board and is responsible for multiplexing data read out from on-detector electronics as well as passing configuration information to them. An important component of the CSM is a Field-programmable gate array (FPGA), specifically using the FPGA Artix7 xc7a35T, is responsible for fanout of configuration and control information for 18 mezzanine cards. The Artix-7 is a commercial component with a history of meeting our radiation specifications. The specific model used in the CSM was first tested for the Single Event Effects (SEE) at LANSCE. The model was tested in a radiation hard environment with an average flux 10^3 higher than ATLAS (6.02E+3 n/cm2/s vs 1.3E+6 n/cm2/s). Results show that the SEE test approximately had 3 years of ATLAS in comparison with ∽1.9E+11n/cm2/y fluence (MDT CSM Requirement). One CSM board on average has approximately 9 errors in 3 years of ATLAS Run. The CSM was next tested for the Total Ionization Dose (TID) at BNL. The model was tested at a dose rate 7.675 kRad/hr. Results show that the total dose of all four irradiated test boards exceeded more than 3x the ATLAS RTC requirement of 10kRad dose.

In-person participation Yes

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