Status of ZDC Yasa & Michael for ZDC group, KU, Iowa, UIC 20 th 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

ZDC HiVolt Vertex LVDS GT Laser QIECCM RBX manager S2E13 Lumi Server S2C07 S2F18 DQM Tunnel LHC Integration HV LoVolt S4F02 DCS signal DSS RecHits 141ns - HTR Map HLX DCC E+,E- GCT Timing S2F07 S1E04 LUT

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

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.

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

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.

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.

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.