Pedestal shift study » History » Revision 8
Revision 7 (Jixie Zhang, 01/23/2023 01:10 PM) → Revision 8/12 (Jixie Zhang, 01/23/2023 01:10 PM)
h1. Pedestal shift study ======================================================================== #4023-#4032: 20210120, no beam, HV on, pulse trigger #4066: 20210124, no beam, HV off, pulse trigger Name:_SC_D,_SC_A,_SC_B,_X,_LASPD_t,_LASPD_b,_SC_C,_PreSh_L(SDU#1),_PreSh_R(THU#1),_PreSh_T(SDU#2),_Shower_L(SDU#4),_Shower_R(THU#2),_Shower_T(SDU#5),__CerA,__CerB,__CerC, __CerD HV:___1150,_1550,_1650,_0,_____800,_____900,_1600,___________1470,___________1740,___________1680,____________1030,_____________1030,____________900,___930,___930,___930, ___930 Do the HV scan following this table (note that CerD is connected to HV channel E08C2_ch07): For Cherenkov: ch13,ch14,ch15, E08C2_ch07: 910, 930, 950, 970 For Shower: ch10,ch11: 900, 950, 1000, 1050 For Shower: ch12: 800, 850, 900, 950 |run\HV run\HV channel| ch10|ch11|ch12|ch13|ch14|ch15|E08C2_ch07| |4023-4024| 4023-4024| 800| 900| 900| 910| 910| 910| 910| |4025-4026| 4025-4026| 950| 950| 850| 930| 930| 930| 930| |4027-4028| 4027-4028| 1000|1000| 900| 950| 950| 950| 950| |4029-4030| 4029-4030| 1050|1050| 950| 970| 970| 970| 970| |4031-4032| 4031-4032| 1030|1030| 900| 950| 950| 950| 950| |4066| 4066| 0| 0| 0| 0| 0| 0| 0| ======================================================================== 20210120 run# ch7.00 ch7.01 ch7.02 ch7.03 ch7.04 ch7.05 ch7.06 ch7.07 ch7.08 ch7.09 ch7.10 ch7.11 ch7.12 ch7.13 ch7.14 ch7.15 ch8.00 ch8.01 ch8.02 ch8.03 ch8.04 ch8.05 ch8.06 ch8.07 ch8.08 ch8.09 ch8.10 ch8.11 ch8.12 ch8.13 ch8.14 ch8.15 4023 106.7 103.6 99.1 101.4 101.3 98.5 103.4 94.9 108.9 102.6 107.2 110.4 105.0 101.6 103.5 99.3 115.3 110.3 123.0 115.8 104.9 104.7 108.4 107.0 107.0 102.1 104.4 100.6 104.9 107.4 113.2 103.1 4024 106.8 103.7 99.2 101.4 101.2 98.5 103.6 95.0 108.9 102.7 107.2 110.6 105.2 101.6 103.5 99.5 115.2 110.5 122.9 115.5 105.0 105.0 108.6 107.2 107.0 102.1 104.3 100.7 105.1 107.6 113.2 103.1 4025 106.6 103.6 99.3 101.5 101.3 98.6 103.5 94.8 109.0 102.6 107.4 110.5 105.3 101.6 103.6 99.5 115.0 110.6 122.9 117.2 105.1 105.0 108.4 107.0 107.0 102.1 104.4 100.7 104.9 107.4 113.3 103.2 4026 106.6 103.6 99.2 101.5 101.3 98.6 103.4 95.0 109.0 102.6 107.3 110.4 105.2 101.5 103.5 99.5 115.1 110.4 122.9 117.4 105.1 104.8 108.4 107.0 106.9 102.1 104.4 100.7 104.9 107.5 113.4 103.1 4027 106.5 103.4 99.1 101.3 101.2 98.5 103.3 94.9 108.8 102.5 107.3 110.6 105.3 101.5 103.5 99.5 115.2 110.4 122.9 117.3 105.0 104.7 108.5 106.9 106.9 102.0 104.3 100.5 105.2 107.4 113.4 103.1 4028 106.5 103.5 99.3 101.5 101.2 98.5 103.4 94.9 108.8 102.4 107.3 110.5 105.3 101.5 103.4 99.4 115.1 110.4 122.8 117.4 105.0 105.0 108.4 106.9 106.9 102.0 104.4 100.8 105.1 107.4 113.3 103.2 4029 106.5 103.7 99.1 101.5 101.3 98.5 103.5 95.0 108.9 102.4 107.4 110.5 105.3 101.7 103.5 99.6 115.2 110.5 122.8 117.3 105.0 105.0 108.5 106.9 106.9 102.1 104.4 100.7 105.0 107.4 113.2 103.0 4030 106.5 103.7 99.2 101.6 101.2 98.5 103.5 95.0 108.9 102.5 107.3 110.7 105.2 101.6 103.4 99.6 115.0 110.5 122.6 117.5 105.1 105.0 108.5 106.9 107.0 102.0 104.3 100.7 104.9 107.4 113.2 103.3 4031 106.8 103.9 99.4 101.7 101.1 98.6 103.9 94.9 109.2 102.6 107.4 110.3 105.4 101.7 103.4 99.4 115.4 110.6 122.7 118.5 105.1 105.0 108.5 107.2 106.9 102.1 104.3 100.8 105.0 107.5 113.4 103.2 4032 106.7 104.0 99.3 101.7 101.3 98.7 103.8 95.1 109.3 102.7 107.5 110.6 105.4 101.8 103.5 99.4 115.1 110.7 122.8 118.7 105.1 105.0 108.5 107.2 107.0 102.1 104.4 100.7 104.9 107.7 113.3 103.3 20210124 run# ch7.00 ch7.01 ch7.02 ch7.03 ch7.04 ch7.05 ch7.06 ch7.07 ch7.08 ch7.09 ch7.10 ch7.11 ch7.12 ch7.13 ch7.14 ch7.15 ch8.00 ch8.01 ch8.02 ch8.03 ch8.04 ch8.05 ch8.06 ch8.07 ch8.08 ch8.09 ch8.10 ch8.11 ch8.12 ch8.13 ch8.14 ch8.15 4066 106.4 103.8 99.8 101.6 101.7 98.6 103.6 95.8 109.5 103.3 107.6 110.5 105.4 102.0 103.9 99.5 117.3 109.4 123.3 124.4 104.9 105.0 108.8 107.0 107.3 101.6 104.8 101.2 105.4 108.0 115.1 103.2 Summary: Within a short time (several days), pedestals are stable and do not show dependence on HVs. The largest change in pedestal happended to CerSum (ch8.03), which is 8.9 adc unit between HV off and HV on. However, this change is still within 3 sigma. The 2nd large change in pedestal happened to SC_D (ch8.00), which is 2.3 adc unit between HV off and HV on.