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sphenix-hcal-l - Re: [Sphenix-hcal-l] first HCal data with a real sPHENIX digitizer

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Subject: sPHENIX HCal discussion

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  • From: Martin Purschke <purschke AT bnl.gov>
  • To: sphenix-hcal-l AT lists.bnl.gov
  • Subject: Re: [Sphenix-hcal-l] first HCal data with a real sPHENIX digitizer
  • Date: Fri, 25 Mar 2022 22:07:16 -0400

BTW, if you are desperate, you can prepend my test area to your LD_LIBRARY_PATH:


purschke@rcas2067 ~ $
LD_LIBRARY_PATH=/phenix/u/purschke/softwarerepo/install/lib:$LD_LIBRARY_PATH
purschke@rcas2067 ~ $ dlist
/sphenix/data/data02/sphenix/hcal/1008/LED/LED_s25_north-00000048-0000.evt
Packet 1001 1000 -1 (sPHENIX Packet) 92 (IDDIGITIZERV1)

Best,
Martin

On 3/25/22 21:42, Martin Purschke via sPHENIX-HCal-l wrote:
John,
we haven't had a rebuild since the pull request. Patience.. Should be in tomorrow.

Best, Martin
--
Sent from my Android phone.


On March 25, 2022 8:22:56 PM EDT, John Haggerty <haggerty AT bnl.gov> wrote:

Martin,

Is there something different in the decoder version that hasn't
propagated to RCF? I see on that same file:

[jsh@rcas2074 LED]$ ddump -f LED_s25_south-00000047-0000.evt
Packet 1001 1000 -1 (sPHENIX Packet) 92 (UNKNOWN)
0 | 0c01 1f32 ffff 000c 0001 faaf 061b 0638
8 | 0622 063c 0626 0644 062e 064f 064f 0669
16 | 0668 0677 0782 078b 0e38 0f7a 1b1b 1fb0
24 | 27b3 2ef5 2897 2fde 2080 2579 1700 19f6
32 | 103b 11e6 0c6f 0d58 0a77 0b05 0959 09d2

where I see on emcal data:

[jsh@rcas2074 test]$ ddump -f test_00020480-0000.prdf | more
Packet 21351 5981 0 (Unformatted) 93 (IDDIGITIZER_31S)
Evt Nr: 0
Clock: 47828
Nr Modules: 3
Channels: 192
Samples: 31
Det. ID: 0x5555
Mod. Addr: 0x3333
FEM Slot: 14 13 12
FEM Evt nr: 1 1 1
FEM Clock: 47819 47819 47819
Even chksum: 0xc883 calculated: 0xc883 ok
Odd chksum: 0x8671 calculated: 0x8671 ok

On 2022-03-25 17:21, Martin Purschke wrote:

John,

92 aka IDDIGITIZERV1 is correct - it denotes the standalone data
read
directly through the crate controller, not the DCM2. The iValue
API is
exactly the same as for the others - well, that's the idea of the
hitformat.

I left a packet id 1001 dialed in. But once you have the packet, you
shouldn't see a difference.

Best,
Martin


$ ddump /data/phnxrc/standalone_hcal/LED_s25_
LED_s25_north-00000048-0000.evt LED_s25_north-00000054-0000.evt
LED_s25_south-00000047-0000.evt LED_s25_south-00000053-0000.evt
[phnxrc@daq06 standalone_hcal]$ ddump
/data/phnxrc/standalone_hcal/LED_s25_south-00000047-0000.evt
Packet 1001 1000 -1 (sPHENIX Packet) 92 (IDDIGITIZERV1)
Evt Nr: 1
Clock: 64175
Channels: 64
Samples: 31
L1 Delay: 50
Slot Nr: 12
Nr Modules: 1

0 | 1563 1570 1574 1582 1615 1640 1922
3640 6939 10163 10391 8320 5888 4155 3183 2679
2393 2214 2081 1981 1920 1880 1839 1791 1753
1728 1728 1726 1718 1704 1698
1 | 1592 1596 1604 1615 1641 1655 1931
3962 8112 12021 12254 9593 6646 4582 3416 2821
2514 2307 2166 2051 1976 1936 1894 1838 1788
1760 1763 1761 1750 1727 1715


...




On 3/25/22 10:58, John Haggerty wrote:

Very nice, and congratulations to all!

The data seem to be written with a different hit format than
the beam
test data and emcal data we've taken... it seems to be 92
and we
normally record 93.  Could we make it that?  Thanks.

On 2022-03-24 23:38, Martin Purschke via sPHENIX-HCal-l wrote:

Dear all,

at long last we had all the ingredients together to read
out a sector
of the HCal (sector 25 that happened to be connected)
with a real
sPHENIX digitizer. All other tests in 912 or 1008 had
been done using
the old PHENIX MBD electronics (and some were done with
a DRS4). In
order to avoid any surprises, we had long planned to
read the HCal
out
with the "real thing". Today was the day.

Dan, Stefan, Hanpu, and I took some pulser and LED data.
This was
interleaved with other rigging work in the AH, but we
got some useful
runs.

I have first renamed the files to some more meaningful
names (the DAQ
setup will become more polished tomorrow and over the
weekend to do
that out of the box) and have uploaded them to the RCF at

/sphenix/data/data02/sphenix/hcal/1008

There are directories for LED, Pulser, cosmics (no
cosmics files
there yet).

There are 48 connected channels out of the 64 that the
digitizer has,
0-23 the south half, and 24-47 the north half of the sector.

For a quick look, I attach single event displays of the
48 channels
vs
the 31 waveform samples for north + south (the
LED/pulser works on a
half sector at a time). Those are LED runs.

One of the questions we had that was already answered
today: the
polarity of the signals is right.


We later switched to sector 2 at the about 6 o'clock
position, where
we installed (or tried to) a cosmic ray telescope with 2
scintillator
paddles, one in the magnet and one underneath the barrel
(Dan and
Stefan took some pictures). Unfortunately, while both
worked just
fine
in a test when I set up the coincidence logic the day
before, I could
not get the lower one to hold HV today (maybe b/c we had
drizzling
rain and high humidity today?). Since I had to leave
early today, for
now I used just the upper one, which of course is a
really poor
trigger. But I do see a cosmic signal here and there.
More tomorrow.

The list of runs and some more info in the ELog at

https://sphenix-intra.sdcc.bnl.gov/WWW/elog/HCAL/1432
<https://sphenix-intra.sdcc.bnl.gov/WWW/elog/HCAL/1432>

Best,
    Martin

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------------------------------------------------------------------------
John Haggerty
haggerty AT bnl.gov
cell: 631 741 3358

------------------------------------------------------------------------
John Haggerty
haggerty AT bnl.gov
cell: 631 741 3358


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--
Martin L. Purschke, Ph.D. ; purschke AT bnl.gov
; http://www.phenix.bnl.gov/~purschke
;
Brookhaven National Laboratory ; phone: +1-631-344-5244
Physics Department Bldg 510 C ; fax: +1-631-344-3253
Upton, NY 11973-5000 ; skype: mpurschke
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