SN1009 (80 mm witness sample) was annealed between 19 and 20 January 2022 - used the large furnace in Downs 221, atmosphere was air, used glass petri dishes to protect optic (from Gabriele and CRiMe). Start time was 18:28 Pacific, and sample was removed at 17:50 Pacific on the next day.
Ramp up rate = 100 °C per hour
Hold temp = 300 °C
Hold time = 10 hours
Ramp down rate = 100 °C per hour
Witness RTD observed a ~20 °C overshoot and ~13 °C offset from controller RTD. These parameters were consistent with the elog entries ENG_Labs/253 and ENG_Labs/254. See attached image of the temperature profile (.xlsx file is source document).
Optic is now with Liyuan in RTS for recharacterization after anneal.