ALICE Calibration Requirements |
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T0 OK October 06 |
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Par # |
Parameter |
Data format/size per channel |
Data size (Total)
Bytes |
Update freq |
Source |
Confirmed |
Run type / Trigger type |
# of required events/sampling
rate |
Processing level: sub-event or
event |
Results: FEE/Archive |
Accessible by
offline |
Calib.
Procedure in AliRoot |
use case # |
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on FES |
in OCDB |
reference |
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1 |
Total delay for each channel
(laser) |
Array (Float[3]) |
- |
3.00E+02 |
no |
Run |
DAQ |
yes |
laser |
1000 |
sub-event |
OCDB |
Yes |
in progress / to be finished by
the end of 2006 |
1 |
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2 |
Total delay for each channel
(beam) |
Array (Float[3]) |
- |
3.00E+02 |
no |
Run |
DAQ |
yes |
physics runs |
1000pp |
sub-event |
OCDB |
Yes |
in progress / to be finished by
the end of 2006 |
1 |
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3 |
PMT amplitude (laser) |
Array (Float[3]) |
- |
3.00E+02 |
no |
Run |
DAQ |
yes |
laser |
1000 |
sub-event |
OCDB |
Yes |
in progress / to be finished by
the end of 2006 |
1 |
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4 |
PMT amplitude (beam) |
Array (Float[3]) |
- |
3.00E+02 |
no |
Run |
DAQ |
yes |
physics run |
1000pp |
sub-event |
OCDB |
Yes |
in progress / to be finished by
the end of 2006 |
1 |
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5 |
Slewing correction for CFD
(time walk) with LED |
TGraph(~60double) |
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6.00E+03 |
no |
Run |
DAQ |
yes |
calibration/laser |
5000 |
sub-event |
OCDB/Preprocessor |
Yes |
in progress / to be finished by
the end of 2006 |
1 |
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6 |
Slewing correction for CFD
(time walk) with QTC |
TGraph(~60double) |
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6.00E+03 |
no |
Run |
DAQ |
yes |
calibration/laser |
5000 |
sub-event |
OCDB/Preprocessor |
yes |
in progress / to be finished by
the end of 2006 |
1 |
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7 |
Delay per each VDL channel |
Array of
ints (Long64[24]) |
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no |
200 |
once before 1st run |
autonomous system measurements |
yes |
1/year |
no |
no |
Preprocessor |
yes |
March 2007 |
produced
offline |
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8 |
Delay in each PMT vs HV |
TGraph
(~60double) |
- |
no |
3.00E+02 |
once before 1st run |
autonomous system measurements |
yes |
1/year |
no |
- |
Preprocessor |
Yes |
March 2007 |
produced
offline |
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9 |
Signal cable delay for each PMT |
Array of
ints (Long64[24]) |
- |
no |
4.00E+02 |
once before 1st run |
autonomous system measurements |
yes |
1/year |
no |
- |
Preprocessor |
Yes |
March 2007 |
produced
offline |
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10 |
Look Up Table |
Array Of
Ints (Int[111][4]) |
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2.00E+03 |
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if changed |
produced
offline |
yes |
physics run |
all events |
event |
Preprocessor |
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end of 2006 |
produced
offline |
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11 |
HV |
1 short Int |
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2.00E+00 |
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Run |
DCS Archive DB |
yes |
physics run |
run |
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Preprocessor |
Yes |
February 2007 |
4 |
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12 |
Temperature
(Env.) |
3 floats (2-par fit+max
excursion) |
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12 |
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Run |
DCS Archive DB |
Yes |
physics run |
run |
event |
Preprocessor |
Yes |
February 2007 |
4 |
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- |
4 |
10 |
Temperature
(Env.) |
3 floats (2-par fit+max excursion) |
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12 |
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Run |
DCS Archive DB |
Yes |
- |
minute |
- |
DCS
ArchiveDB/OCDB |
Yes |
- |
4 |
10 |
Temperature
(Env.) |
3 floats (2-par fit+max excursion) |
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12 |
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Run |
DCS Archive DB |
Yes |
- |
minute |
- |
DCS
ArchiveDB/OCDB |
Yes |
- |
4 |
10 |
Temperature
(Env.) |
3 floats (2-par fit+max excursion) |
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12 |
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Run |
DCS Archive DB |
Yes |
- |
minute |
- |
DCS
ArchiveDB/OCDB |
Yes |
- |
4 |
10 |
Temperature
(Env.) |
3 floats (2-par fit+max excursion) |
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12 |
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Run |
DCS Archive DB |
Yes |
- |
minute |
- |
DCS
ArchiveDB/OCDB |
Yes |
- |
4 |
10 |
Temperature
(Env.) |
3 floats (2-par fit+max excursion) |
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12 |
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Run |
DCS Archive DB |
Yes |
- |
minute |
- |
DCS
ArchiveDB/OCDB |
Yes |
- |
4 |
10 |
Temperature
(Env.) |
3 floats (2-par fit+max excursion) |
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12 |
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Run |
DCS Archive DB |
Yes |
- |
minute |
- |
DCS
ArchiveDB/OCDB |
Yes |
- |
4 |
10 |
Temperature
(Env.) |
3 floats (2-par fit+max excursion) |
13 |
Magetic
field (B) |
1 float |
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4 |
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Run |
DCS Archive DB |
yes |
physics runs |
run |
run |
Preprocessor |
Yes |
February 2007 |
4 |
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DCS
access - offline has access only to DCS archive DB, curently no access to
configuration DB |
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DAQ -
offline has access to raw data and DAQ logbook, but no acccess to LDC or GDC
directly |
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OCDB
- Calibration parameters are stored in the Offline Calibration DB. The data
used to calculate these parameters, the reference data, can also be
optionally archived for later access from offline. |
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