Abstract
This paper summarizes the radiation testing performed on the XilinxKintex-7 FPGA in an effort to determine if the Kintex-7 can be usedwithin the ATLAS Liquid Argon (LAr) Calorimeter.The Kintex-7 device was tested with wide-spectrum neutrons, protons,heavy-ions, and mixed high-energy hadron environments. The results of these tests were used to estimate the configuration ramand block ram upset rate within the ATLAS LAr. These estimations suggest that the configuration memory will upset ata rate of 1.1 × 10−10 upsets/bit/s and the bram memory willupset at a rate of 9.06 × 10−11 upsets/bit/s. For the Kintex7K325 device, this translates to 6.85 × 10−3 upsets/device/sfor configuration memory and 1.49 × 10−3 for block memory.
Highlights
This paper summarizes the radiation testing performed on the Xilinx Kintex-7 FPGA in an effort to determine if the Kintex-7 can be used within the ATLAS Liquid Argon (LAr) Calorimeter
FPGA circuit designs operating on FPGAs within the ATLAS LAr should employ the built-in BlockRAM memory (BRAM) error correction codes (ECC) modes to protect the memory from these upsets
This paper describes the results of radiation tests performed on the Kintex7 in an effort to evaluate the suitability of deploying the Kintex7 within the ATLAS LAr Calorimeter
Summary
A variety of radiation tests were conducted from October, 2012 through September, 2013 to better understand the effects of radiation on the Kintex architecture The goals of these tests were as follows: (1) measure the sensitive static cross-section of key architectural components of the Kintex device, (2) estimate the upset rates within the LAr environment, (3) identify single-event functional interrupt (SEFI) mechanisms within the Kintex, and (4) explore SEE mitigation methods on the Kintex and validate their operation. 2.1 Radiation tests The Kintex device was tested in the following radiation environments: LANSCE [5], October 2012 This initial test measured the sensitive cross section of configuration memory and BRAM memory to a wide-spectrum neutron beam. The Kintex architecture was tested with Heavy Ions (Nitrogen, Xenon, and Argon) in an effort to understand single-event latchup behavior and to obtain initial data for use in space rate upset estimations Results from this test will be described in a future publication. Each test involved a number of runs in which the total number of events and fluence are computed by adding the results of all valid runs
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