Differences

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--- event_filter [2015/10/31 14:14]
pereira [TPPACs packet]
+++ event_filter [2015/10/31 17:19]
pereira [Hodoscope packet]
@@ Line 283: / Line 283: @@
-Where Ch is the segment number (from 0 to 15, being segment 0 the most upstream). The Filter gives an energy word for each segment as long as **energy** is greater than 0.
+where Ch is the segment number (from 0 to 15, being segment 0 the most upstream). The Filter gives an energy word for each segment as long as **energy** is greater than 0.
@@ Line 399: / Line 399: @@
+==== Hodoscope packet ====
+The Filter parses the [[Detectors#Hodoscope|Hodoscope]] information encoded in the two
+[[S800 USB DAQ data format#Tag 0x7165: Phillips 7164 ADC module for hodoscope energies 0 through 15|Phillips 7164 ADCs]] and re-formats the data in three packets, two with the energies of the two groups crystals (from 1 to 16 and from 17 to 32), and the third one with the hit pattern recorded in the [[S800 USB DAQ data format#Tag 0x4448: LeCroy4448 coincidence register module for hodoscope hit pattern|LeCroy 4448 coincidence-register module]].
+Each of the two first packets look like:
+  * **Packet Length** (self-inclusive)
+^    A number from 3 to 19    ^^^^^^^^^^^^^^^|
+| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | X | X | X | X | X |
+| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+  * **Packet Tag**
+^    0x58B0    ^^^^^^^^^^^^^^^|
+| 0 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
+| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+  * **Hodoscope Sub-packet "Energy" Tag**
+^    0x0000 or 0x0001    ^^^^^^^^^^^^^^^|
+| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | X |
+| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+where 0x0000 labels the energy sub-packet of the first group of crystals from 1 to 16, and 0x00001 labels the second group of crystals from 17 to 32.
+  * **Energy values**
+The energy from each of the two Phillips 7164H ADC modules is given by a series of words that look like:
+^  ^^^ Ch ^   energy   ^^^^^^^^^^^|
+| 0 | 0 | 0 | X | X | X | X | X | X | X | X | X | X | X | X | X |
+| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+where Ch is the crystal number in the packet (from 0 to 15). The Filter gives an energy word for each crystal as long as **energy** is greater than 0.
+The third hodoscope packet with information from the coincidence register looks like:
+  * **Packet Length** (self-inclusive)
+^    5    ^^^^^^^^^^^^^^^|
+| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
+| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+  * **Packet Tag**
+^    0x58B0    ^^^^^^^^^^^^^^^|
+| 0 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
+| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+  * **Hit pattern**
+^    hit pattern of first 16 crystals   ^^^^^^^^^^^^^^^|
+| X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X |
+| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+^    hit pattern of crystals 16 to 32   ^^^^^^^^^^^^^^^|
+| X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X |
+| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+  * **Time**
+The Hodoscope OR time (from an ORTEC TAC encoded in the [[S800 USB DAQ data format#Tag 0x7167: Phillips 7164 ADC module for CRDC anodes (energies and TAC)|S800 Phillips 7164H ADC]]) is given by:
+^  empty ^^^^   time   ^^^^^^^^^^^|
+| 0 | 0 | 0 | 0 | X | X | X | X | X | X | X | X | X | X | X | X |
+| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |

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