1 High Energy Nuclear Physics Program Status report April 2009 Experimental activity – Focus on ALICE – Groups at UiO, UiB, HiB Theoretical activity –Groups at UiO and UiB ISOLDE

2 Overview PhD and Master (since November 2007) Publications (since November 2007)

3 Budget

4 ALICE - budget

5 Budget (misc) Dag Larsen Boris Wagner (50%) 6673 Budget Expenditure

6 Budget (from 2006) (UiO) (misc) Dag Larsen Boris Wagner (50%) 455Kalliopi Kanaki Budget Expenditure

7 Budget (from 2007) (misc) Dag Larsen Temp. contracts engineer UiB Boris Wagner (50%) 708Kalliopi Kanaki Budget Expenditure

8 Budget - summary M&O cat. A: higher than expected M&O cat B: lower than forseen Running costs of commissioning/data taking: underestimated –CERN mobile phones –cables and fibres, electronic components, air-tight flansches –bug fixing, re-soldering of FECs –rental car for transport to P2 –PVSS course –... Travel and subsistence – OK Postdoc/stipend positions –Johan Alme hired was as engineer for one additional year –Missing engineer at UiB for one year: several temporary contracts Status of today: kNOK spent (out of kNOK)

9 Manpower status April 2009 Master students – Rikard Bølgen (UiB, ALICE instrumentation) – Dana Huang (UiB, ALICE physics) – Henrik Qvigstad (UiB, ALICE physics) – HiB project Master students in instrumentation (see Steinar’s presentation) – Hege Erdal – Kristian Ytre-Hauge – Camilla Stokkevag – Per Ivar Lønne – Andreas Samnøy – Stian Sagevik (Medical physics)

10 Manpower status April 2009 PhD students Njål Brekke Medical physics Bergen

11 Manpower status April 2009 Postdocs * * Two postdocs sharing one position at UiO (Theory), starting in 2009

12 Manpower status April 2009 Permanent staff (experiment) Permanent staff (theory)

13 Group structure and expertise Joakim Nystrand Dieter Røhrich Postdocs: Boris Wagner Kalliopi Kanaki 2 PhD students Håvard Helstrup Kristin Fanebust Hetland Bjarte Kileng 1 PhD student Kjetil Ullaland 1 PhD student UiB Nuclear Physics HiB Technical Computing UiB Microelectronics Gunnar Løvhøiden (retired) Trine Tveter Postdocs: Jovan Milosevic UiO Nuclear Physics Bernhard Skaali (retired) 1 PhD student UiO Electronics 2 PhD students

14 Experiment

15 Status of ALICE – September 2008 ALICE Status Complete: ITS, TPC, TOF, HMPID, FMD, T0, V0, ZDC, Muon arm, Acorde Partial installation: 1/5 PHOS 4/18 TRD 9/48 PMD 0/6 EMCAL ~ 40% DAQ/HLT Installation targets met by mid 2008 Ready to take data

16 Status of ALICE – Summer % TPC  80% HLT 3/5 PHOS

17 Time Projection Chamber - TPC Norwegian in-kind contribution to FEE Status –The TPC in its final position at P2 was successfully commissioned in 2008 with Krypton gas, laser tracks and cosmics –Currently services are being reconnected

18 Time Projection Chamber - TPC The Norwegian groups participated in the development –of the read-out electronics (read-out controller unit), –of the trigger electronics (busy box) –and of the field layer of the DCS for the FEE, in the integration of the TPC into the Trigger, HLT and DCS systems, in the installation of the FEE and in the commissioning.

19 Time Projection Chamber – RCU/DCS Summary of activities/achievements in (DL, Matthias Richter, Sebastian Bablok, DF, Johan Alme, Ketil Røed) –RCU firmware: Trigger If –DCS software (CE and FES) –Installation and Commissioning Cmd / ACK Channel Service Channel Message Channel FED Server FEE Client InterComLayer Configuration Data Base FeeServer PVSS II (FED - Client) FeeServer Supervisory Layer Control Layer Field Layer Front-End Device Interface (FED) Front-End Electronics Interface (FEE) Hardware Device Hardware Device Hardware Device Internal Bus Systems

20 BUSY Generation –Busy box (hardware, firmware, DCS software) –Installation and commissioning

21 Calibration strategies - TPC Raw data Sequence of ADC counts per pad pad-number, pad-row and arrival time of signal on pad Calibrated data Cluster charge Space coordinate of cluster centroid Reconstructed data dE/dx Particle trajectory gain reconstruction alignment t0, drift velocity electrostatic distortions ExB effects space charge effects electron attachement –Online/Offline interfaces –Drift velocity calibration

22 Radiation tolerant read-out controller unit –Modelling of the SEUs (in collaboration with IBM) –Integration of the reconfiguration procedure into DCS

23 PHOton Spectrometer - PHOS Norwegian core contribution to read-out chain –APD + preamp + T-card –FEE, trigger Status –The first module had been commissioned and calibrated with cosmics in the PHOS-lab in 2007 and at P2 (in its final position) in 2008, although it had not been not cooled down to -21 degrees. –At the end of 2008 it was removed from the pit. This module and two further modules are now being inserted into air-tight casings, re- assembled, tested and installed at P2.

24 PHOton Spectrometer - PHOS The Norwegian groups contributed to the development of the read-out electronics (preamplifier, front-end and trigger electronics and read-out controller unit). They participated in the integration of PHOS into the Trigger, DAQ, HLT and DCS systems, in beam tests and in the commissioning in the lab and at P2. They have supplied accompanying simulations of the physics capabilities, detector performance and trigger selectivity and rates. Summary of activities/achievements in (Per-Thomas Hille, OD, DL, KS, LL): –DCS for the FEE –Integration with DAQ, ECS, Trigger and DCS –Firmware design of the FEC board controller –Firmware design of the L0 and L1 trigger generation –Commissioning the first module –Calibration of the first module with cosmics –Development of online data processing, filtering and trigger algorithms –Development of online monitoring and calibration tools

25 High Level Trigger - HLT Norwegian core contribution to the HLT cluster Status: The first phase of the HLT installation is completed: full detector connectivity. All interfaces to other subsystems are in place; tested reconstruction chains are available.

26 High Level Trigger - HLT Summary of activities/achievements in –Methods and algorithms for an on-line selection of (rare) signals (KK, MR, SB, KA, GO, OD) »TPC »PHOS –A common HLT analysis framework has been developed that allows to run online code inside the AliROOT offline framework and vice versa (MR) –Interfaces to all other relevant subsystems, i.e. ECS, DCS and OFFLINE have been developed, implemented and tested (SB) –We also contribute to the cluster management and the online monitoring of the HLT system (ØH)

27 Preparing for physics analysis Study of flow phenomena in pp collisions (JM), study of the ALICE detector performance for elliptic flow measurements, study of possibility to measure directed flow Correlations (JM, MN) Study of gamma-hadron jets (SL) Reconstruction of neutral pions via gamma conversions in the TPC (KA) Online reconstruction of open charm (GO) Transverse neutral energy production in p+p and A+A collisions (OD) Study of two-photon and photonuclear processes in ultra-peripheral collisions at the LHC (KS)

28 Theory The Bergen group continued the development and testing of our hybrid 3D-hydrodynamical models for QGP scenarios: a Multi-Module Model for describing the reaction’s initial preequilibrium stage, the intermediate thermally equilibrated hydrodynamical stage, and the final freeze-out stage. The main goal was to incorporate the Constituent Quark Number (CNQ) scaling in the hydro calculations, and Freeze-Out. The Oslo group studied the possible thermalization and Equation of State of hot and dense nuclear matter in heavy-ion collisions within the microscopic transport models, the collective anisotropic flow and two-particle correlations. The group also worked on a fast MC Generator, implemented in ALIROOT, which contains a statistical model, PYTHIA, jet quenching and flow with impact parameter dependence; on the implementation of cold nuclear effects from Glauber Gribov Theory in HYDJET-generator and on the production of heavy quarkonium.

29 ISOLDE –300 kNOK ISOLDE membership fee 2008 –300 kNOK ISOLDE membership fee Since 2007 –ISOLDE theory (Jan Vaagen, Morten Hjorth-Jensen, Eivind Osnes) supported by the ALICE project