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Pedestal shift study » History » Revision 3

Revision 2 (Jixie Zhang, 01/23/2023 12:52 PM) → Revision 3/12 (Jixie Zhang, 01/23/2023 12:52 PM)

h1. Pedestal shift study 


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 #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 
 HV:___1150,_1550,_1650,_0,_____800,_____900,_1600,___________1470,___________1740,___________1680,____________1030,_____________1030,____________900,___930,___930,___930 

 Do the HV scan following this table: 
 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 

                                     ch 10     11     12     13     14    15      07 
 4023, 4024:    HV(ch10-15,E08C2_ch07) :    800, 900, 900, 910, 910, 910, 910 
 4025, 4026:                              950, 950, 850, 930, 930, 930, 930 
 4027, 4028:                             1000,1000, 900, 950, 950, 950, 950 
 4029, 4030:                             1050,1050, 950, 970, 970, 970, 970 
 4031, 4032:                             1030,1030, 900, 950, 950, 950, 950 

 #4066: 20210124, no beam, HV off, pulse trigger 
 4066                                        0,    0,     0,     0,     0,     0,     0  

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 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. 
 The 2nd large change in pedestal happened to SC_D (ch8.00), which is 2.3 adc unit between HV off and HV on.