[Tanaka, Yuzurihara, Narikawa]
1. Focus on K1:LSC-POP_PDA2_RF90_I_ERR_DQ with run_lockloss_ndsope.sh -L and -a.
Classify into four categories
- Pattern1: Slowly dump (54)
- K1:LSC-POP_PDA2_RF90_I_ERR_DQ drops over about 1~2 seconds instead of dropping suddenly.
- Pattern2: High-freq oscillate (27)
- K1:LSC-POP_PDA2_RF90_I_ERR_DQ oscillates at high frequency, e.g., 6Hz.
- Pattern3: Low-freq oscillate (2)
- K1:LSC-POP_PDA2_RF90_I_ERR_DQ oscillates at low frequency, e.g., 0.8Hz.
- Pattern4: Transient in PRCL (4)
- Transient appears in K1:LSC-PRCL_IN1_DQ.
# where numbers in parentheses () indicate the number of lockloss except for ones labeled "WORKING_WITH_..."
Screenshot is summarized here: /users/yuzu/lock/pic/POP90
Investigation of cause of pattern4 is ongoing.
Pattern4 lockloss happened at
- 2024-12-15 09:44:11.1875 UTC
- 2024-12-15 13:28:48.5625 UTC
- 2024-12-18 11:08:58.3125 UTC
- 2024-12-21 15:28:41.1875 UTC
Figures: Example of Pattern1, Example of Pattern2, Example of Pattern3, Pattern4-1, Pattern4-2, Pattern4-3, Pattern4-4,
