Differences

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--- event_filter [2015/10/31 12:20]
pereira [CRDC packets]
+++ event_filter [2015/10/31 17:18]
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 403: / Line 403: @@
-==== Intermediate-image PPACs packet ====
+==== Hodoscope packet ====
-The Filter provides a PPAC packet: one for [[Detectors|Cathode Readout Drift Chambers (CRDC)|CRDC1]] and one for [[Detectors|Cathode Readout Drift Chambers (CRDC)|CRDC2]]. Each CRDC packet is divided in two sub-packets: the "Raw" sub-packet with information about the pads energies (encoded in the [[S800 USB DAQ data format#Tag 0xCFDC: XLM72V crdc1 pad readout module|CRDCs XLM72 modules]]), and the "Anode" sub-packet with anode energy and time information encoded in the CRDCs [[S800 USB DAQ data format#Tag 0x7167: Phillips 7164 ADC module for CRDC anodes (energies and TAC)|Phillips ADC]]. In the following, we describe the structure of the packet provided by the Filter for each CRDC.
+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 10 to 330    ^^^^^^^^^^^^^^^|
+^    A number from 3 to 19    ^^^^^^^^^^^^^^^|
-| 0 | 0 | 0 | 0 | 0 | 0 | 0 | X | X | X | X | X | X | X | X | X |
+| 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 |
@@ Line 415: / Line 418: @@
   * **Packet Tag**
-^    0x5840    ^^^^^^^^^^^^^^^|
+^    0x58B0    ^^^^^^^^^^^^^^^|
-| 0 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
+| 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**
-  * **CRDC label**
-^    0x0000 or 0x0001   ^^^^^^^^^^^^^^^|
+^    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 and 0x0001 identify CRDC1 and CRDC2, respectively.
+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.
-  * **CRDC Sub-packet "Raw" Length** (self-inclusive)
+  * **Energy values**
+The energy from each of the two Phillips 7164H ADC modules is given by a series of words that look like:
-^   A number from 3 to 323    ^^^^^^^^^^^^^^^|
+^  ^^^ Ch ^   energy   ^^^^^^^^^^^|
-| 0 | 0 | 0 | 0 | 0 | 0 | 0 | X | X | X | X | X | X | X | X | X |
+| 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 segment as long as **energy** is greater than 0.
-  * **CRDC Sub-packet "Raw" Tag**
-^    0x5841    ^^^^^^^^^^^^^^^|
-| 0 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 |
-| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
-  * **Global threshold**
+The third hodoscope packet with information from the coincidence register looks like:
-^    0x0000    ^^^^^^^^^^^^^^^|
+  * **Packet Length** (self-inclusive)
-| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
+^    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 |
-This word is reserved for a global threshold; it is no longer used, so it is set to 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 |
-  * **Samples sub-packets**
-The Filter sends a series of sample sub-packets. Each sub-packet consists of two parts. The first part includes one 16-bit word with information about the **sample** and **channel** numbers:
-^  control bit  ^   sample    ^^^^^^^^^   channel   ^^^^^|
+  * **Hit pattern**
-| 1 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X |
+^    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 |
-where **channel** is a number between 0 and 63, and refers to a group of four pads. The second part includes __up to four__ consecutive 16-bit words, each with a pad energy __greater than 0__:
-^  control bit  ^  empty  ^^^  connector  ^^  energy  ^^^^^^^^^|
-| 0 | 0 | 0 | 0 | X | X | X | X | X | X | X | X | X | X | X | X |
+^    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 |
-The **connector** number is related to the pad number (**pad**) according to: **pad** = **channel** + **connector** x 64 (where **connector** ranges from 0 to 3, and **channel** is given by the first word of the sample sub-packet). Note that the Filter processes information from connectors with energies greater than 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 |
-  * **CRDC Sub-packet "Anode" Length** (self-inclusive)
-^    4    ^^^^^^^^^^^^^^^|
-| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
+==== TPPACs packet ====
+The Filter parses and re-formats information from the [[Detectors#Tracking Parallel Plate Avalanche Counters (TPPAC)|Tracking PPACs]] encoded in the [[S800 USB DAQ data format#Tag 0x5870: XLM72V tracking ppac readout module|XLM72 TPPACs module]]. The new packet includes both TPPACs; its structure is very similar to that from the CRDCs.
+  * **Packet Length** (self-inclusive)
+^    A number from 5 to 325    ^^^^^^^^^^^^^^^|
+| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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 |
+  * **Packet Tag**
-  * **CRDC Sub-packet "Anode" Tag**
+^    0x5870    ^^^^^^^^^^^^^^^|
+| 0 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 |
+| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
-^    0x5845    ^^^^^^^^^^^^^^^|
-| 0 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 |
+  * **TPPAC Sub-packet "Raw" Length** (self-inclusive)
+^   A number from 3 to 323    ^^^^^^^^^^^^^^^|
+| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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 |
+  * **TPPAC Sub-packet "Raw" Tag**
-  * **Energy from Anode**
-The anode energy (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  ^^^^   energy   ^^^^^^^^^^^|
+^    0x5871    ^^^^^^^^^^^^^^^|
-| 0 | 0 | 0 | 0 | X | X | X | X | X | X | X | X | X | X | X | X |
+| 0 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 1 |
 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
-  * **Time from Anode**
+  * **Global threshold**
-The anode 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   ^^^^^^^^^^^|
+^    0x0000    ^^^^^^^^^^^^^^^|
+| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
+| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+This word is reserved for a global threshold; it is no longer used, so it is set to 0
+  * **Samples sub-packets**
+The Filter sends a series of sample sub-packets. Each sub-packet consists of two parts. The first part includes one 16-bit word with information about the **sample** and **channel** numbers:
+^  control bit  ^   sample    ^^^^^^^^^   channel   ^^^^^|
+| 1 | 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 |
+where **channel** is a number between 0 and 63, and refers to a group of four pads. The second part includes __up to four__ consecutive 16-bit words, each with a pad energy __greater than 0__:
+^  control bit  ^  empty  ^^^  connector  ^^  energy  ^^^^^^^^^|
 | 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 |
+The **connector** number is defined between 0 and 3, and it is related to the pad number (**pad**). The value 0 refers to the first 64 pads, and correspond to the strips in the dispersive direction of the first TPPAC. The value 1 is for pads between 63 and 127, and includes the strips in the non-dispersive direction of the first TPPAC. The value 2 corresponds to pads between 128 and 191, which are associated to the strips in the dispersive direction of the second TPPAC. Finally, the value 3 corresponds to pads between 191 to 256, and covers the strips in the non-dispersive direction of the second TPPAC.
+The value of **pad** is given by **index** + **connector** x 64, where **index** is depends on the value of **channel** and **connector** according to the table below, where the second column shows the index values for **connector**=0 or 2, and the third column corresponds to the index values for **connector**=1 or 3:
+^channel^index^index|
+|0|30|0|
+|1|31|1|
+|2|28|2|
+|3|29|3|
+|4|26|4|
+|5|27|5|
+|6|24|6|
+|7|25|7|
+|8|22|8|
+|9|23|9|
+|10|20|10|
+|11|21|11|
+|12|18|12|
+|13|19|13|
+|14|16|14|
+|15|17|15|
+|16|14|16|
+|17|15|17|
+|18|12|18|
+|19|13|19|
+|20|10|20|
+|21|11|21|
+|22|8|22|
+|23|9|23|
+|24|6|24|
+|25|7|25|
+|26|4|26|
+|27|5|27|
+|28|2|28|
+|29|3|29|
+|30|0|30|
+|31|1|31|
+|32|33|63|
+|33|32|62|
+|34|35|61|
+|35|34|60|
+|36|37|59|
+|37|36|58|
+|38|39|57|
+|39|38|56|
+|40|41|55|
+|41|40|54|
+|42|43|53|
+|43|42|52|
+|44|45|51|
+|45|44|50|
+|46|47|49|
+|47|46|48|
+|48|49|47|
+|49|48|46|
+|50|51|45|
+|51|50|44|
+|52|53|43|
+|53|52|42|
+|54|55|41|
+|55|54|40|
+|56|57|39|
+|57|56|38|
+|58|59|37|
+|59|58|36|
+|60|61|35|
+|61|60|34|
+|62|63|33|
+|63|62|32|

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