CLAS12 R1 S6 QA
HV burnin
Step 1: Set Voltage to 50 volts on all channels. Probe HVB to be sure that all sense, field, and guard wires have a voltage. (You should set current threshold to 10 microAmps on the HV supply)
Step 2: While monitoring the current, ramp the HV at a speed of 5 V/s to the following
G:F:S= 525,-700,700
Step 3: Begin to take data recording the time and sense wire current as you ramp up the sense wire HV to 1400 volts while restricting the current draw to less than 10 micraAmps. Measure the voltage and current if either changes by more than 10%.
SL2-HVB1
Guard current is typically below 0.01 microAmp
| Date | Guard | Field | Sense | I_{Sense} | I_{Field} | Time |
| Volts | Volts | Volts | A | A | ||
| 2/20/13 | 525 | -700 | 1400 | 0.5 | 0.7 | 22:50 |
SL2-HVB2
Guard current is typically below 0.01 microAmp
| Date | Guard | Field | Sense | I_{Sense} | I_{Field} | Time |
| Volts | Volts | Volts | A | A | ||
| 2/20/13 | 525 | -700 |
Pre-Potting Tension Error
MYSQL commands
mysql> show databases;
+--------------------+ | Database | +--------------------+ | information_schema | | mysql | | region1 | | test | +--------------------+ 4 rows in set (0.02 sec)
mysql> use region1;
Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed
mysql> show tables;
+-------------------------------+ | Tables_in_region1 | +-------------------------------+ | R1S1_Tension_Trend_Test_Field | | R1S1_Tension_Trend_Test_Sense | | R1S4_Tension_Trend_Test_Field | | R1S4_Tension_Trend_Test_Sense | | R1S5_Tension_Trend_Test_Field | | R1S6_Tension_Trend_Test_Field | | R1S6_Tension_Trend_Test_Sense | | R1_SL1_S1_Field | | R1_SL1_S1_Sense | | R1_SL1_S4_Field | | R1_SL1_S4_Sense | | R1_SL1_S5_Field | | R1_SL1_S6_Field | | R1_SL1_S6_Sense | | R1_SL2_S1_Field | | R1_SL2_S1_Sense | | R1_SL2_S4_Field | | R1_SL2_S4_Sense | | R1_SL2_S5_Field | | R1_SL2_S6_Field | | R1_SL2_S6_Sense | | R1_particleCounts | | R1_work_log | +-------------------------------+ 23 rows in set (0.00 sec)
mysql> describe R1_SL1_S6_Sense;
+------------------+-------------+------+-----+-------------------+-------+ | Field | Type | Null | Key | Default | Extra | +------------------+-------------+------+-----+-------------------+-------+ | iCol | int(11) | NO | | NULL | | | iRow | int(11) | NO | | NULL | | | PeriodMeasured | float | YES | | NULL | | | Result | varchar(32) | YES | | NULL | | | TensionMeasured | float | YES | | NULL | | | CalculatedPeriod | float | YES | | NULL | | | SuperLayer | int(11) | NO | | NULL | | | Length | float | YES | | NULL | | | FreqMeasured | float | YES | | NULL | | | TensionError | float | YES | | NULL | | | TestLogic | int(11) | NO | | NULL | | | CalcFreq | float | YES | | NULL | | | HighCut | float | YES | | NULL | | | LowCut | float | YES | | NULL | | | Sector | int(11) | NO | | NULL | | | Date | varchar(32) | YES | | NULL | | | Mod_time | timestamp | NO | | CURRENT_TIMESTAMP | | +------------------+-------------+------+-----+-------------------+-------+ 17 rows in set (0.04 sec)
mysql> select TensionError from R1_SL1_S6_Sense INTO OUTFILE '/tmp/R1SL1S6Sense.dat';