[Halld-level1] [New Logentry] Trigger studies during last evening

[salgado at jlab.org]

Logentry Text:
--
1. FCAL / BCAL trigger

The FCAL and BCAL trigger were setup and testes. We didn't have time 
to check/tune performance of the FCAL & BCAL trigger; the trigger was 
set for the nigh shift though.

a) FCAL has problems with the SSP connection to rocfcal12 - 
the link was disabled; data was taken with 11 FCAL crates in 
the trigger.

b) 12 hot channels were masked. The FCAL(1800) cosmic rate is < 70 Hz 

c) Masks were prepared (with Adesh) to disable fcal channels (rings)
around the beam pipe. We are going to test the configuration with 4
rings disabled shortly.

d) BCAL was runing Ok. The cosmic rate for the energy 6000 counts was about
900 Hz

e) The configuration with the BCAL & FCAL, FCAL, and BCAL triggers was setup;
runs Ok with cosmics, to be checked with data (some parameters have to be
tuned).

----------


2. PS trigger. 

a) Suspicious fadc in slot 5 was replaced; the problem with taking data with 
the fadc mode 8 still exists (mode 7 seems to be Ok though).

b) during access to the hall, the PS2 crate was found to be operated
at a relatively low fan speed of 2500 rpm. Fan speeds in  'adjacent'
BCAL crates were about 3300. The fan speed appeared to be controlled
by the control process (I was not aware about this) which prevented
to increase the fan speed - the process was disabled, the speed was
increase to 4000 rpm.

There are concerns that there could be some 'heat' related 
problems/damages:

- the fadc board, which we replaced a day ago has some indications of
  the leaking thermal pad 

- the readout problems depend on the hit multiplicity (amount of processing)


Also, some fadc registers seem to be corrupted during the daq crash, see below
(I guess that the temperature/voltages for fadc in slot 5 are not real).


After one of the DAQ crash
 
      ...........Control...........      Processing      ..Temperature Alarm..
Slot  Temp [C]   Core [V]   Aux [V]       Temp [C]       Control    Processing
--------------------------------------------------------------------------------
  3    48.2     1.0        2.5             56.1           OK         OK
  4    48.7     1.0        2.5             57.1           OK         OK
  5    230.3     3.0        3.0             31980.8         *ALARM*    *ALARM*
  6    45.3     1.0        2.5             50.2           OK         OK
 13    48.2     1.0        2.5             57.6           OK         OK
 14    44.3     1.0        2.5             51.2           OK         OK
 15    40.4     1.0        2.5             50.7           OK         OK
 16    44.8     1.0        2.5             50.2           OK         OK
--------------------------------------------------------------------------------

Not running

      ...........Control...........      Processing      ..Temperature Alarm..
Slot  Temp [C]   Core [V]   Aux [V]       Temp [C]       Control    Processing
--------------------------------------------------------------------------------
  3    42.3     1.0        2.5             49.7           OK         OK
  4    42.3     1.0        2.5             50.7           OK         OK
  5    43.8     1.0        2.5             47.2           OK         OK
  6    39.9     1.0        2.5             44.8           OK         OK
 13    40.9     1.0        2.5             50.2           OK         OK
 14    38.4     1.0        2.5             45.3           OK         OK
 15    34.9     1.0        2.5             44.8           OK         OK
 16    38.4     1.0        2.5             43.3           OK         OK
--------------------------------------------------------------------------------


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