RoentDek DLD120, Руководство пользователя

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Page 46 of 80 MCP Delay Line (Version 6.2.90.5)
Parameter 137 pOPw
Offset for third anode layer (added to w, only for Hexanode)
Parameter 138 pOSum
Offset for Sum/Diff calculations
This offset value is an additive constant to all time sum/diff
coordinates
3.5.3.2 DAN coordinates, primary
The DAN coordinates are by definition only the additional coordinates that are computed from the (raw) DAQ coordinates
retrieved from the hardware or from a previously accumulated event file. This “xxx Standard.ccf” picks only one set of delay-
line coordinates for one of the hits (default: first hit, see parameter 105) and calculates position and time values for these
coordinates. If you have changed parameter 2, 32 or 33 from their default value (first hit only) or if you sort a list-mode file
acquired with a non-default parameter settings) you need to adjust the (pointer) parameters 105 and 106. It is such possible to
apply the position and time calculations to the next hits if such are (or have been) acquired by adjusting these pointer
parameters. The DAN.dll will read the values of the status registers and the channel numbers in the 4 (Hexanode: 6) coordinates
defined by parameter 105 (default: first hits) and calculate the desired position and time informations. Note that even for the
use of a DLD (4 delay-line signals only), the coordinates for two additional delay-line signals (as from the Hexanodes) are
defined and set to 0. A first set of DAN coordinates is created by using the defined set of DAQ coordinates:
AbsoluteEventTime absolute time of event from the start of data acquisition
in µs (only if enabled, see parameter 2)
DeltaEventTime time between an event and the previous event in µs (only
if time stamp recording is enabled, see parameter 2).
This spectrum can be used to determine the average event
rate (use the “fit exp”
CoboldPC
command on the acquired
spectrum)
EventCounter number of event from the start of data acquisition
True internal coordinate
ConsistenceIndicator The value of this number for each event is:
∑
u
⋅
2
i-1
,
i is the TDC channel, u =1, if at least one hit in the
TDC channel i was registered, otherwise 0. If each TDC-
channel for the selected hit number has received at least
one hit of the value is 15 for a DLD and 63 for a
Hexanode. This assumes that the first TDC channels are
used for the delay-line signals. Up to 16 TDC channels
are supported by this function.
PLLstatus not used for
TDC8
(but must be defined)
n1 number of hits in TDC channel 1
n2 number of hits in TDC channel 2
n3 number of hits in TDC channel 3
n4 number of hits in TDC channel 4
n5 number of hits in TDC channel 5
n6 number of hits in TDC channel 6
x1
channel number
of hit in channel 1 (default: hit 1)
x2
channel number
of hit in channel 2 (default: hit 1)
y1
channel number
of hit in channel 3 (default: hit 1)
y2
channel number
of hit in channel 4 (default: hit 1)
z1
channel number
of hit in channel 5 (default: hit 1)
only for Hexanode
z2
channel number
of hit in channel 6 (default: hit 1)
only for Hexanode
The values in these coordinates are calculated from the
retrieved
channel numbers
of the selected DAQ-
coordinates, e.g. (see above). Depending on parameters
100, 101, 104 these values have the specified units
(corrected or uncorrected) and are the basis for all