Status of ZDC Yasa

1
Status of ZDC Yasa Michael for ZDC group, KU,
Iowa, UIC 20th September 2008

• Integration close
• Safe operation OK
• Grounding Tolerable
• Firmware Needs to be tested
• Luminosity After HF
• Software Started but lots to do
• Lift fixture Working on final design

2
Integration
DSS
DCS
HiVolt
LoVolt
S4F02
HV
GT
signal
LVDS
Vertex
0.1 0.9
Laser
QIE
CCM
RBX manager
141ns -
ZDC
S2E13
S2C07
Tunnel
RecHits
LUT
DQM
Map
HTR
DCC
S2F18
Lumi Server
LHC
E,E-
Timing
HLX
GCT
S1E04
S2F07
3
Safe Operation

• After technical inspection in August we have
  covered all action items except for High
  Voltage signs in tunnel.
• In addition we will install a safety ground
  between ZDC and TAN based on zener diodes. This
  will be done during shutdown.
• Alain Cordonnier has installed DSS interlocks for
  low and high voltage.
• Michael has submitted some procedures to Archana
• Cables have official numbers that are listed in
  database

4
Grounding

• Layout was designed to minimize radiation load
• Signal and HV cables connect S2E13 and tunnel
• We had a coffee meeting with Laza, Magnus et
  al
• Magnus would prefer that we not get HV and LV
  from S24F02 but rather keep everything at S2E13
• We would like to work on this over the winter
  shutdown. In the meantime Michael can write a
  simple procedure for disconnecting the ZDC if it
  is thought to be contaminating other detectors.

5
Firmware

• Drew Barden and John Jones have written firmware
  to great E, E-, Multiplicity - and coincidence
  of and - for Lumi
• This still needs to be tested.
• We still need LUTs to linearize ZDC based on
  parameters used in test beam.
• Michael has started talking with Greg Landsberg
  and Gena Kukartsev and will try to finish this
  week

6
Luminosity

• ZDC E and E- should now be available to server.
• Testing can start once Lumi group feels that the
  rest of the system is under control
• Oleg Grachov will work with Princeton group on
  this when he comes in October.
• ZDC, like HF, will be incorporated into lumi
  function manager so that it can be continuously
  providing lumi data.

7
Software

• From Cruzet4 Mayda, Steve found significant noise
  1-2GeV on pedestal. This is comparable to that
  seen in test beam. It is not from splitter box
  but probably from pickup on 208m of cable.
• For beam splash events near ZDC, 10m!, was
  saturated but far one 290m from collimator saw
  nothing.
• Urgent need now to set timing of ZDC wrt beam
  clock
• We could start with dead reckoning and also look
  on scope.
• Jason StJohn setting up ZDC DQM framework, Alexi
  Mestvirishvili will be looking at data
• We are requesting that raw data also be stored
  offline
• We need help on defining offline packages to
  make ZDC physics objects.

8
Lift Fixture

• Paul Debbins is finalizing design. We hope to
  have make a presentation to Austin TS group
  early October.
• We will also have to lift out BRAN.
• Sarchophagus will be mostly marble.
• Aiming to have this in for February.