A very busy week:

1

• A very busy week
• In the assembly tent
• Assembly of module 5 and 6
• ? missing 4 tiles, module 6 completed
• Final checks on LED fiber coupling and light
  spread (Hendrik)
• In the testing tent
• Test of LED light spread over one bundle
  (Sebastian)
• Test of settings for the PIN diode preamplifier
  (Nanda)
• Test of new CMB prototype board with DAQ
  control (Milan)
• ? the LED can be triggered by Tcalib and the
  amplitude steered by Vcalib
• ? though some problem in the LED pulse shape

2
Test of new CMB prototype
differential pulse to LED triggered by Tcalib and
steered by trimmers
differential pulse to LED triggered by Tcalib and
steered by Vcalib0
3

• In the Lab
• new ASIC test board with manual controlled
  setting is soldered and works properly
  (Sasha/Natasha)
• recovered lost factor 2 in ASIC gain
• the measurement of saturation curve continues!!
  (Sasha/Hendrik)
• At the test beam
• Paul was here yesterday
• ? fixed some DAQ problems between new/old
  version
• ? establish communication to Slow Control
  computer
• movable stage can be controlled by slow control
  (Sven)
• ? and soon also by configuration loop in the
  DAQ
• The longer shaping time is still a mystery
• APD paper
• Finished and submitted to Rolf for DESY
  directorate approval

4

• Another very busy week
• In the assembly tent
• Assembly of module 5 and 6 are assembled
• ? missing 4 tiles, module 6 completed
• Module 3 fiber rooting finished tested
  (Nanda)
• Next modules will be testes by Karsten with a new
  system
• Final checks on LED fiber coupling and light
  spread (Hendrik)
• In the testing tent
• Test of LED light spread over one bundle
  (Sebastian)
• Test of settings for the PIN diode preamplifier
  (Nanda)
• Test of new CMB prototype board with DAQ
  control (Milan)
• ? the LED can be triggered by Tcalib and the
  amplitude steered by Vcalib
• ? though some problem in the LED pulse shape
• ? many progresses but not conclusive

5
Typical differential pulse from LED
driver amplitude controlled via external DC
level
With amplitude controlled via Vcalib
LED pulse
Vcalib Tcalib
6

• In the Lab
• new ASIC test board with manual controlled
  setting is soldered and works properly
  (Sasha/Natasha)
• recovered lost factor 2 in ASIC gain
• the measurement of saturation curve continues!!
  (Sasha/Hendrik)
• ? presentation from Hendrik in 2 weeks
• ? Renovation of the LAB next week!!!
• At the test beam
• Paul was here yesterday
• ? fixed some DAQ problems between new/old
  version
• ? establish communication to Slow Control
  computer
• movable stage can be controlled by slow control
  (Sven)
• ? and soon also by configuration loop in the
  DAQ
• ? DAQ controlled scan, software being written
  (Marius)
• ? deeper look into SiPM with long discharge
  (Marius/Vladimir)
• The longer shaping time is still a mystery
• APD paper
• Finished and submitted to Rolf for DESY
  directorate approval

7
Weekly HCAL Meeting

• Module assembly Karsten ? large fluctuation in
  the measured resistance between SiPM pins 4
  15 MOhm
• what do we measure ?
• - SiPM internal resistance S1000 Rpixel
  (2-20 MOhm) 2-20kOhm
• - measuring R across SiPM pins measures the R
  diode R(V) !!
• conclusion measurement indicates if SiPM is
  connected, value fluctuations indicate
  fluctuations in quality of SiPM (? to be checked)
• ? Mapping of fiber rooting bundle quality
  check automated
• LED driver Milan/Sven/Boris ? working on a new
  prototype steered
• by Tcalib and Vcalib (DAQ)
• CMB production depends on the success
  of this prototype

8
Weekly HCAL Meeting

• Activities on Module 1 2
• - all measurements stopped to investigate
• long discharge behavior and SR losses
• Module 1 Vladimir ? SiPM on the scope vs voltage
• Marius ? look into correlations
  apply V corrections
• Module 2 Natasha ? repeat Vladimir measurements
• Beni ? look into correlations apply V
  corrections
• SR losses Mathias/Peter/Sven ? chasing ground
  problems
• 1st lesson learned all auxiliary devices
  must be on
• reference ground

9
Weekly HCAL Meeting

• PIN diode r/o Mathias ? implemented changes for
  PIN diode r/o on one HAB channel (this HAB CANNOT
  be used for SiPM r/o !!!)
• - very low noise
• - production of all PIN diode HABs launched
• Nanda ? ASIC settings for PIN diode r/o
• Lab 143 thanks to Peter and Gert we have a
  new/clean/beautiful lab!!!
• Next Meeting skip next week but earlier on the
  week after
• ? Tuesday the 30th

10
Production status

• VFE Electronics
• - all mother-boards arrived in the tent
• - 30 PIN diode HABs 80 SiPM HABs ? to be
  tested on Friday
• Modules assembly
• - waiting for connectors (this week) and cables
  (next week)
• - production of slow control cable ? finished
  this week
• CMB prototype
• - many progresses made by Ivo
• - main problems due to miss-usage of driver

11
Test Beam Status Plans

• Restart with new VFE electronics
• Exchange CRC board ? possible problems with BE (!
  to be checked)
• Start integration of testboard for PM readout
• 6th of October ? Aachen group starts measurements
  on TPC
• Plan for the next 4 weeks
• Week 1) LY calibration
• Week 2) physics measurements (shower max with
  absorber in front)
• Week 3) systematic studies (tile sizes,
  uniformity, edge effects, ...)
• Week 4) spare for possible crosschecks (or delays
  ?)
• After 6th of October ? we work in parassitic
  mode
• - long discharge studies
• - LED calibration, pedestal stability, and
  maybe... beam

12
Test Beam Status Plans

• Restart with new VFE electronics
• Exchange CRC board ? possible problems with BE (!
  to be checked)
• Start integration of testboard for PM readout
• 6th of October ? Aachen group starts measurements
  on TPC
• Plan for the next 4 weeks
• Week 1) LY calibration ? done
  (?Marius)
• Week 2) physics measurements (shower max with
  absorber in front)
• ? start on Mon. with additional 2 PM readout
  (? Volker)
• Week 3) systematic studies (tile sizes,
  uniformity, edge effects, ...)
• Week 4) spare for possible crosschecks (or delays
  ?)
• After 6th of October ? we work in parassitic
  mode
• - long discharge studies
• - LED calibration, pedestal stability, and
  maybe... beam

13
Module assembly

• Modules 4,5,6 assembled, cabled, waiting for
  fiber rooting
• ?next week the mirrors should arrive
• New fiber bundles made and polished on the glued
  side ?next week presentation on
  new monitoring system technology
• Module 3 dismounted ? in the tile tester over
  next week
• ?has to be assembled before end of the month !!
• After assembly ? modules stacked in tent for
  electr. cosmic test ?no absorber plates
  in between !! Only electrical isolation
• Module 3 will come as last
• ? comparison between LD results in tile tester
  and after soldering
• End of Sep. the measuring/drilling stage is
  dismounted
• ? end of module assembly for this year

14
Status and Plan for the Main meeting

• Monitoring system ? still un-understood feature
  of LED driver
• ? saturation curve from 18 SiPM (mod2)
• ? pixel fit / systematic studies on gain
• Test Beam ? E scan for SiPM saturation
• ? shower max comparison for 10 SiPM
• ? MIP / LY calibration

15
Test beam tent

• No test beam activity for this and next week
• ? try to install LED driver in module 1 but
• ? module 1 continuously powered
• ? need of a second LVDS converter to operate two
  DAQ!!
• Module 2 is closed now supports the tail
  catcher
• ? integration of tail catcher in undergoing ?
  Vishnu
• Move to the test beam on the 31st

16
Activities in the lab more

• Test of 40 SiPM for H1 detector, underway in the
  tile tester
• ? found 2 LD SiPM, the others are OK for the use
  in H1
• Test of Hamamatzu SiPM from Volker
• ? need to modify tile (they are thicker)
• ? need to modify tile tester (opposite bias
  connection)
• Many more SiPM saturation curves ? Hendrik
• Online logbook
• ? after detailed discussion we have a concept
  and Sven said
• its no problem!
• Nacht des Wissens
• ? we have 4 tables to fill with HCAL, a plan
  volunteers

17
Status of Module assembly

• Modules 4,5,6 assembled, cabled, waiting for
  fiber rooting 20/10/05
• ? still the case
• Module 3 only half cabled, no fibers
• All cabled channels tested for LD
• ? 3 LD in mod 6, 1 in 5
• New fiber bundles are needed with smaller
  diameter
• ? being made
• Mid Dec. start combined cosmic test with ECAL 5
  HCAL modules
• ? integrate one CMB prototype board if possible
• ? run over Xmas
• Shopping list mechanical support, 10 LV/HV
  cables, 10 SCASI (extra!)
• 2 scintillator plates,
  NIM/LVDS converter, 1 DAQ

18
Current analysis activities in the group

• Beni ? combined analysis of HCAL and Tail Catcher
  in the testbeam
• ? influence of ASIC chip on SiPM r/o
• Marius ? HCAL testbeam data
• calibration procedure saturation
  correction
• Hendrik ? SiPM saturation curve in control
  environment
• reproducibility, tile size dependence,
  SiPM type dep.
• Nanda ? SiPM saturation curve in the module
• reproducibility, uniformity of light
  system

19
The Xmas(s) Run

• Xmass run started on the 23rd Dec. and continues
  till Mon. the 9th
• Connected Module 4, 5, 6
• Monitoring side
• 3 LED driven with prototype LED driver,
  steered by DAQ 3 PIN diodes r/o on prototype
  preamp. boards (Ivo)
• In addition 16 ECAL slabs were connected and
  partially in operation ?trigger distribution
  problems high leakage current
• First run on dCache Dec 25 1646 Run110931.bin
• The data taking loop
• 1801383504 Jan 4 0901 Run111319.bin 300k
  ev cosmics LED ped
• 280658436 Jan 4 1145 Run111320.bin 2
  Gby in 20 h
• 402035080 Jan 4 1205 Run111321.bin
  saturation gain calib 80k ev
• 294959428 Jan 4 1221 Run111322.bin
  saturation phys mode 50k ev

20
Xmas(s) Run Hardware

• Mechanic (Doerte / Karsten)
• Stack assembly in April check the gap size for
  full stack
• Need new tool for VFE insertion and extraction
• Use cable fixing (for SCASI and HV/LV) on the
  module side
• Electronics
• VFE working fine! No unexpected DAC losses
• Repair 1 broken SCASI connector on mother board
  (Mathias)
• CRC warning! Too many FE with problems
• ? Paul is coming on the 10th with spare CRCs (2
  ECAL 1 HCAL)
• Slow control (Sven)
• Working fine!
• Check correlation between temperature behavior
  and our actions

21
Xmas(s) Run Software / Online

• All interactive scripts (cp bin to dCache,
  convert bin to LCIO, check the copied file and
  clean local disc) did not work continuously
  ? need manual restart
• Fix problems with scripts
  (Roman / S. Schmidt)
• Discuss strategy for CERN
• Online display was off too time consuming on DAQ
  machine
• Install new DAQ next week
  (Marius / Paul)
• New online display software development
• Extract data for analysis from LCIO
• (Roman / S. Schmidt / Beni / Hendrik
  / Nanda)
• One unique format for every analyzer
• Many single root files .vs. unique root file with
  everything ? ? check running time
  on LCIO and on ROOT

22
Xmas(s) Run Analysis

• Pedestal stability
• LED / PIN diode stability
  (Hendrik)
• MIP correction with LED
• MIP correction with temperature
• Gain stability (Beni)
• MIP correction with gain
• Saturation curve studies reproducibility /
  T-dependence (Nanda)
• Book keeping Long discharge and dead
  channels, currents, etc. (?)
• Simulation (Sebastian)
• Influence of calibration precision on energy
  resolution
• MIP variation with temperature

23
Xmas(s) Run Database

• After all calibration factors are UNDERSTOOD
  choose frequency for DB update
• (S. Schmidt)
• Create DB entry for all modules
• Develop easy access to check all parameter
• Analysis from DB (S. Schmidt)
• LY calculation, comparison to ITEP LY
• Noise calculation from phys mode ped. In MIPs and
  in pixels

24
First Draft schedule for CERN
These slides are on http//www.desy.de/garutti/We
eklyHCALMeeting.ppt
25
Steps towards CERN

• Tile tester (Sasha) module 7 tested delivered
• - 1 tile with high current
• - 1 mismatch number
• module 8 test started
• Assembly production (Doerte/Karsten) started
  mosaic of mod. 7
• - first look tolerances got worse
• - knowledge transfer will take 2 weeks
• - technical support coming only on the 19th
• Tests on assembled modules
• - 4,5,6 (tent) used for CMB commissioning
  studies (Hendrik)
• - check of long discharge 2 (mod 4), 1 (mod
  5), 4 (mod 6) OK!
• - over night run ECAL cosmics HCAL for 1
  run
• - from this week combined cosmics every
  night

These slides are on http//www.desy.de/garutti/We
eklyHCALMeeting.ppt
26
Test schedule
this week ? finish CMB commissioning
(tent) week 12-17 ? further checks on CMB ?
/ DAQ studies (tent) test of DC and check
of mod. 1 (TB) week 19-24 ? ?? (tent)
DC dedicated studies (with ECAL people) (TB)
week 26-31(?) ? combined r/o ECAL/HCAL (tent)
with 2 crates no activities possible
(TB) after that (Apr.)? 4 modules in the
test beam, MIP scan mid Apr. ? combined ECAL
/ HCAL test beam
These slides are on http//www.desy.de/garutti/We
eklyHCALMeeting.ppt
27
New SiPM test
Test of cassette 8 completed 2 SiPM bad 1
(?) Average current in 7,8 higher (0.6 uA) than
in previous cassettes (0.3 uA)
0.48 uA
0.78 uA
28
Test Beam and Tent activities

• New firmware installed in both DAQ systems
• Synchronization of code changes is very important
  !
• ECAL HCAL cosmic run over the w.e. (?)
• Drift chambers aligned and TDC in the readout
• Flush gas over the w.e.
• Monday start DC test (with Michele from ECAL)
• CMB tested in the tent (Hendrik)
• still 1 week free for test, then 2 weeks DAQ
  combined test (enough?)
• LAB saturation curve of SiPM (Daniel, Henning,
  Nicola)
• ?problems with test board
• ?hopefully first results ion 1-2 weeks (?)

29
Production status

• Cassette 7 measured, being drilled
• Cassette 8 ready for measuring and drilling
• Cassette 9 Tile test finish today
• Cassette 10 next week

30
Module production
Production can now be followed on the e-log
http//ttfinfo.desy.de/CALICEelog
Update 29/03/06
Update 06/04/06
31
Program for the next week

• Today tomorrow
• transport 4 HCAL modules (1,2,3,4) in test beam
• cabling, slow control connection
• From Monday
• transport 1 VME DAQ to test beam
• set up cosmic run for ECAL over Easter in the
  tent
• no possible work on tent DAQ till 24th of April
  !!!
• start stage scan in test beam
• 24th April
• ECAL people will move the ECAL to the test beam
• start preparation to combined ECALHCAL run for
  CERN
• ? you are all invited to take some shift to
  learn how to use both systems !

32
Test Beam

• Scanned modules 1,2,4 ? results next week
• Module 3 has 20 SiPM to be resoldered/exchanged
  (Sasha)
• This weekend scan modules 4,2,1 for sys. studies
• Monday exchange modules with 4,5,6 and (?) 3
• Scan modules in the beam.
• ECAL installed behind HCAL till 15th of May
• Then exchange positions 2 weeks for us to take
  data
• Write Train online monitoring
• These week already 4/5 people in the hut we
  expect more !
• Week of the 8th (Montreal) Drift Chambers on ?
  uniformity of tiles
• If possible test modules 8-10 before the 15th

33
Tent assembly

• CMB test suspended till 22-25 May (4 full boards
  expected)
• Need to dismount steel structure (after Monday)
• Next 1-2 week(s) Sasha test of new SiPM with
  DAQ
• No module required
• From 22 May Ivo test
• modules 1-7 should go back to cosmics data taking
  
• Next week Sasha (NIU) will bring 2 1x1 m2 trigger
  plates
• New cosmics structure ?

34
Production status
Test of new SiPM completed in tent
(Sasha/Sebastian) ? results next week Modules up
to 8 calibrated Module 9 waiting for tests New
cosmic set up not yet operational will start
this w.e. Second week of shift training a good
experience !??!
35
Test beam studies - holdscan

• Modules _at_ test beam
• Trigger latency

beam
Trigger 1 / NIM coin.
readout
DC1
DC3
DC4
DC2
Trigger 2 / NIM coin.
AHCAL modules
36
Trigger latency
Too close at the maximum
OK!

• Holdscan problems
• big statistic fluctuations in layer 3 4 due to
  the shower start? accuracy of the mean is
  affected
• channel differences in the order of 10 ? seems
  to be a chip feature? needs further
  inverstigations

37
Signals in a holdscan for the different layers
? 1 MIP
layer 1
layer 2
layer 3
layer 4
38
Hold channel differences
zoom 2
shaped signal
Physics mode Hold difference of 10 ticks
1-2 amplitude change if we get the module mean
value? how to perform the holdscan?? one scan
for each chip 12 positions
zoom 1
39
Hold scan summary for 20 channels in 4 modules
Module 8 Layer 4
Module 6 Layer 2
Module 7 Layer 1
Module 5 Layer 3
40
Production status

• Cassettes no. 9 and 10 are ready for tests.-
  Tiles for cassette no. 14 are in the test
  procedure at DESY.- Tiles for the next 2
  cassettes will be sent to DESY in about a week.

41
Test beam / Tent activities

• ECAL moved in front of HCAL
• DC operational and in the acquisition
• 20x20x0.5 cm3 veto counter in the readout
• ECAL is taking calibration data, we are off for
  the moment
• 31st May installation of 2 VME crates _at_ TB
• Test rack configuration for CERN
• Combined DAQ test
• Exchange modules 5-8 with 9-14 (?)
• Calibration scan of 9-14 during w.e. 9-12th
  June
• !! HERA shutdown planned for 12-15th June
• !! We need urgently the test the third crate for
  the tent
• Cosmic data taking for 1-4 ongoing in the tent
• 24-30th May test of 2 new CMB prototypes in the
  tent (Ivo)

42
Production status plan

• Module 10 and 15 being worked on ? ready for Wed.
  28 ?
• Module 16 waiting for 33 SiPM spares ? will stay
  at DESY (CMB test)
• needed by the 3rd of July for CMB test
• VFE electronics will be mounted after assembly
• Modules can be moved to test beam in blocks of 4
  (Uwe/Sebastian)
• Expected next SiPM delivery ?
• Expected next SiPM test delivery 4 weeks ?
• In the TB MIP scan and gain calibration (with
  CMB) (Nanda/Sebastian)
• TB Data analysis
  (Nanda/Nicola/Niels/Sebastian)

43
Shipping to CERN

• Mon 26
• disassemble TB system, pack, move electronics
  from tent to TB
• set up TB DAQ on new VME (if there)
• Tue 27
• send to CERN 2 VME NIM 3 PC 3TB disk
  van Erika/Marius/Sven/Sebastian(SBS)
• Wed 28
• load track for CERN, departure date ? (Gert)