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AdV-DET (Commissioning)
gouaty - 11:56 Thursday 23 March 2017 (37002) Print this report
Electronics offsets of quadrants photodiodes in central building updated

Yesterday afternoon, after the activity on the B1p quadrants ADC channels, the offsets of the B1p, B2, B4 and B5 quadrants have been checked and updated in the configuration files. The new values of the offsets recorded, as well as the offsets variations are given below:

New Offsets:

DBOX_ADC2378_CHANNEL    SDB2_B1p_QD1_H  0       50000   ""      5.2083  -1.25387e-01    V
DBOX_ADC2378_CHANNEL    SDB2_B1p_QD1_V  2       50000   ""      5.2083  7.72063e-03     V
DBOX_ADC2378_CHANNEL    SDB2_B1p_QD1_Sum        4       50000   ""      5.2083  2.22852e-02     V
DBOX_ADC2378_CHANNEL    SDB2_B1p_QD2_H  1       50000   ""      5.2083  3.60286e-03     V
DBOX_ADC2378_CHANNEL    SDB2_B1p_QD2_V  3       50000   ""      5.2083  -2.27331e-02    V
DBOX_ADC2378_CHANNEL    SDB2_B1p_QD2_Sum        5       50000   ""      5.2083  1.55376e-05     V

DBOX_ADC2378_CHANNEL    SIB2_B2_QD1_H   0       100000  ""      2       -3.43249e-04    V
DBOX_ADC2378_CHANNEL    SIB2_B2_QD1_V   2       100000  ""      2       -5.64622e-03    V
DBOX_ADC2378_CHANNEL    SIB2_B2_QD1_Sum 4       100000  ""      2       1.64656e-02     V
DBOX_ADC2378_CHANNEL    SIB2_B2_QD2_H   1       100000  ""      2       1.29715e-03     V
DBOX_ADC2378_CHANNEL    SIB2_B2_QD2_V   3       100000  ""      2       6.39744e-03     V
DBOX_ADC2378_CHANNEL    SIB2_B2_QD2_Sum 5       100000  ""      2       5.45311e-03     V

DBOX_ADC2378_CHANNEL    SPRB_B4_QD1_H   0       50000   ""      2       -4.32259e-03    V
DBOX_ADC2378_CHANNEL    SPRB_B4_QD1_V   2       50000   ""      2       -2.68241e-03    V
DBOX_ADC2378_CHANNEL    SPRB_B4_QD1_Sum 4       50000   ""      2       9.53401e-04     V
DBOX_ADC2378_CHANNEL    SPRB_B4_QD2_H   1       50000   ""      2       -2.34354e-03    V
DBOX_ADC2378_CHANNEL    SPRB_B4_QD2_V   3       50000   ""      2       -7.65001e-03    V
DBOX_ADC2378_CHANNEL    SPRB_B4_QD2_Sum 5       50000   ""      2       -7.08220e-03    V

DBOX_ADC2378_CHANNEL    SDB2_B5_QD1_H   0       50000   ""      2       -4.29360e-03    V
DBOX_ADC2378_CHANNEL    SDB2_B5_QD1_V   2       50000   ""      2       5.66446e-03     V
DBOX_ADC2378_CHANNEL    SDB2_B5_QD1_Sum 4       50000   ""      2       1.10390e-02     V
DBOX_ADC2378_CHANNEL    SDB2_B5_QD2_H   1       50000   ""      2       9.00722e-03     V
DBOX_ADC2378_CHANNEL    SDB2_B5_QD2_V   3       50000   ""      2       -7.32649e-03    V
DBOX_ADC2378_CHANNEL    SDB2_B5_QD2_Sum 5       50000   ""      2       8.38312e-03

Offset variations:

B1p_QD1 H -7.554e-02   V 5.14e-03   Sum 1.122e-02    (approximate values because this was corrected by hands)
B1p_QD2 H 2.64e-03    V -1.401e-02          Sum -2.0e-03   (approximate values because this was corrected by hands)

B2_QD1 H -1.43388e-04    V 1.40667e-04   Sum 1.10561e-04
B2_QD2 H -2.49805e-05    V 3.74059e-04   Sum 3.86534e-04

B4_QD1 H 3.67723e-05     V -8.32762e-05          Sum 7.93590e-05
B4_QD2 H -6.44691e-05    V 9.83259e-05   Sum 3.82397e-05

B5_QD1 H 3.51310e-04     V 1.47820e-04   Sum -1.43122e-04
B5_QD2 H -1.61659e-04    V -1.36858e-05          Sum 1.58803e-04

As expected large offsets corrections were performed on B1p quadrants, due to the change of the input gain.

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