This afternoon we have updated the following thresholds on the detection system, in accordance with the increase of the input power from 12 to 18 W:
- we updated the thresholds on SDB2_Photodiodes triggering the fast shutter for B1p_PD1 and B1p_PD2 (B1s was already changed yesterday). All thresholds multiplied by a factor 3/2 in the configuration:
ACL_RELAY_CH B1p_PD1_DC_saturation au SAMP_FREQ 0 2 -2 B1p_PD1_DC 0.82 0.58 >= #0.55 0.39 #0.82 0.58 #1.65 1.166 #3.4 2.4 #2 0.7
ACL_RELAY_CH B1p_PD2_DC_saturation au SAMP_FREQ 0 2 -2 B1p_PD2_DC 1.17 0.29 >= #0.78 0.19 #1.17 0.29 #2.35 0.588 #4 1
ACL_RELAY_CH B1s_PD1_DC_saturation au SAMP_FREQ 0 2 -2 B1s_PD1_DC 45 22 >= #30 #45 22 #35 20 #45 22 #90 45 #43 12
- Thresholds in ITF_LOCK.ini for B1p_PD1 have been increased accordingly:
- in the section SHUTTER: b1p_pd1_thr_lo = 0.3 ; b1p_pd1_thr_hi = 0.5 ; b1p_dc_thr = 0.04
- in the section ITF_LOCK: b1p_pd1_thr_lo = 1.5 ; b1p_pd1_thr_hi = 3.0
We used the external configuration of SDB2_Photodiodes in order to apply the new threshold on B1p_PD1 (3.0 instead of 2.5) while the ITF was locked in CARM_NULL_1F.
- Thresholds in DET_MAIN.ini have also been increased by the same factor, namely:
max_power_B1p = 0.04, max_power_B1p_PD1 = 0.44, max_power_B1s = 45 (unchanged with respect to yesterday)
Both DET_MAIN and ITF_LOCK were reloaded at 16h34 utc after an ITF unlock.