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Front-end information » History » Version 27

Version 26 (Michael Wallbank, 07/01/2019 09:57 AM) → Version 27/30 (Michael Wallbank, 07/01/2019 10:12 AM)

h1. Front-end information

h2. V1742/V1495 channel mapping (Last Modified: July 1 2019)

<pre>
Input | Digitizer Channel
---------------------------------+-------------------
Cherenkov | 0
ToF DS 5 (SiPM) | 4
ToF DS 6 (SiPM) | 5
ToF DS 7 (SiPM) | 6
ToF DS 8 (SiPM) | 7
ToF US 1 (PMT) | 8
ToF US 2 (PMT) | 9
ToF US 3 (PMT) | 10
ToF US 4 (PMT) | 11
ToF DS 1 (PMT) | 12
ToF DS 2 (PMT) | 13
ToF DS 3 (PMT) | 14
ToF DS 4 (PMT) | 15
</pre>

<pre>
Input | Trigger Channel | Description
---------------------------------+--------------------+---------------------------------------------------------------------------- ---------------------------------+--------------------+-------------------
WC 1 Logic | 0 | Wire chamber 1 (X|X & Y|Y) (40ns) -- First four trigger board inputs have additional M of 4 logic, M = {1,2,3,4}
WC 2 Logic | 1 | Wire chamber 2 (X|X & Y|Y) (40ns)
WC 3 Logic | 2 | Wire chamber 3 (X|X & Y|Y) (40ns)
WC 4 Logic | 3 | Wire chamber 4 (X|X & Y|Y) (40ns)
Scintillator Paddle 1 (Mock WC1) | 4 | Pad 1 at position of WC1
Scintillator Paddle 2 (Mock WC2) | 5 | Pad 2 at position of WC2
Scintillator Paddle 3 (Mock WC3) | 6 | Pad 3 at position of WC3
Scintillator Paddle 4 (Mock WC4) | 7 | Pad 4 at position of WC4
Readout Gate | 8 | $00 -> $00+T DAQ readout window (T ~ 40s)
Switchyard Gate | 9 | $30 -> $36 gate; same readout gate as the MWPC Controller
MWPC Off | 10 | Readout inhibit: TRUE when MWPC Controller is available to accept a new trigger (10us gate)
Digitizer Busy | 11 | Readout inhibit: TRUE when the digitizer is done digitizing previous triggers (~O(100us))
WC Hardware MWPC Coincidence | 12 | Wire chamber trigger logic done in NIM bin; 30ns outputs for TDCs 2,3,4 (2 of 3 coincidence) in AND coincidence with 10ns output for TDC 1; see diagram below
EMPTY | 13 |
TOFPrompt Logic | 14 | Time-of-flight prompt trigger signal; 10ns DS ToF in coincidence in 65ns-delayed 10ns US ToF (fast particle ToF ~ 44ns); see diagram below
TOFSlow Logic | 15 | Time-of-flight slow trigger signal; 10ns DS ToF in coincidence in 75ns-delayed 90ns US ToF (slow particle ToF > 44ns); see diagram below
</pre>

New proposed trigger board configuration:

<pre>
Input | Trigger Channel
---------------------------------+-------------------
WC 1 Logic | 0
WC 2 Logic | 1
WC 3 Logic | 2
WC 4 Logic | 3
Scintillator Paddle 1 (Mock WC1) | 4
Scintillator Paddle 2 (Mock WC2) | 5
Scintillator Paddle 3 (Mock WC3) | 6
Scintillator Paddle 4 (Mock WC4) | 7
TOF US | 8
Switchyard Gate | 9
MWPC Off | 10
Digitizer Busy | 11
MWPC Coincidence | 12
TOF DS | 13
TOFPrompt Logic | 14
TOFSlow Logic | 15
</pre>

h2. VME crate

As user novadaq, the directory
<pre>
/home/nfs/novadaq/
</pre>
on novabeamlinedaq00 contains some useful utilities to communicate with the hardware. All CAEN provided software.

Run CAEN upgrader GUI:
<pre>
./CAENUpgrader-1.6.3/CAENUpgraderGUI/CAENUpgraderGUI
</pre>

Run CAEN V1742 digitizer (outside of DAQ):
<pre>
wavedump-3.8.2/bin/wavedump /etc/wavedump/WaveDumpConfig_X742.txt
</pre>

Run CAEN VME module:
<pre>
./CAENVMELib-2.50/sample/CAENVMEDemo V2718 <base address, in hex (beginning 0x)> <link>
</pre>
With this utilities, one can set the base address (option 2), set a register (option 1) and read etc.

CAEN base addresses:
Board Address
1742 3211
2495 3210
1495 0100

h2. V1742 Digitizer

h3. Post-Trigger

The V1742 has a register named @POST_TRIGGER@. This value is a percentage of the readout that is to be after the trigger. There is an implicit latency of around 40 ns, so in reality, the Post-Trigger percentage sets the percentage of the readout that will be *after* 40 ns past the trigger.

For an unknown reason, only certain values of @POST_TRIGGER@ are accepted and must be found by trial and error.

h3. Known working values

* 0
* 20
* 45

h2. MWPC Controller(s)

Beamline:
* Hardware address: 00.80.55.00.00.68
* IP address: 131.225.176.70
* Name: ftbfwc03
* CD system reference number: S22041
* CD equipment ID number: 557912

Target:
* Hardware address: 00.80.55.EE.00.08
* IP address: 131.225.176.164
* Name: ftbfwc07
* CD system reference number: S22056

Log in (e.g.):

<pre>
telnet ftbfwc03 <port>
</pre>

Ports (according to "here":https://cdcvs.fnal.gov/redmine/projects/ftbfwirechamberdaq/wiki/Wire_Chamber_DAQ_Developer)
* 5000 - daq apps
* 5001 - emergency access
* 5002 - telnet sessions

[[MWPC Configuration and Registers]]