Kerem
Cankocak
Istanbul Technical University
Physics Department
ITU CMS group team leader
|
kerem.cankocak@cern.ch Important
dates 1989 Graduation from Bogazi\8Di University, Istanbul 1994-1998 DELPHI membership as research
assistant at Stockholm University 1999 – 2007 Faculty at the
University of Mugla, Turkey 2001 CMS member, as a
researcher supported by TUBITAK grant 2007 – 2009 Research Associate in HEP Group, Iowa
University, USA 2009 – present Faculty at the
Istanbul Technical University, Turkey 2010 Member of the CMS Collaboration
Board 2010 Member
of the CMS-HCAL Institutional Board 2011 –
present team leader and project leader of ITU-CMS
group, granted by TAEK |
Research
activities DELPHI Experiment at LEP
(CERN): 1994-1999 I did my licentiate thesis at
CERN on the \D2measurement of the inclusive branching ratios of Tau decays in
the Delphi detector at LEP\D3, under the supervision of Sven-Olof Holmgren. I worked on the discrepancy between the
topological and the exclusive branching ratios of the one, three and five
charged particles decay mode of Tau lepton, the so-called
\D3missing modes problem\D3, to derive more consistent picture of the tau decay
properties through the decay of Z0 bosons. On the technical side I
contributed to the development, installation, commissioning, calibration and
alignment of a set of lead-scintillator counters which cover the region with q between
360 and 410 to improve the hermeticity
of the DELPHI detector. In this project under the leadership of Alberto Benvenuti, I was involved in all the phases of the
development of the new detector.
My other involvement was the High Density Projection electromagnetic
calorimeter. I joined test beam, calibration and quality monitoring for144
readout chambers. I also intensively participated to data taking shift of
DELPHI detector at various levels. Finally, at the last era of
LEP, I have contributed to SUSY searches at DELPHI experiment, analyzing the
data and comparing with MC models in order to find an excess from Z0
decays, mainly on MSSM chargino-neutralino
channels. CMS Experiment at LHC: 2001- present Being a faculty member at
the Mugla University, I have joined to CMS
experiment under the METU project supported by TUBITAK (The Scientific and Technological Research Council of Turkey). My main involvement was Hadronic Calorimeter in CMS. I have worked at several
stages of calorimeter design, installation, commissioning and calibration,
including sourcing the modules and test beams. We did intensive radiation
damage studies on the calorimeter fibres,
scintillator plates, electronics and silicon based
photomultipliers. I have participated to the
installation and commissioning of 36 Forward Hadronic
Calorimeters (HF) modules in building 186 at CERN and performed radiation damage
analysis of the quartz fibers which are installed inside the HF absorbers. Thoe raddam tests were done
with PS beam of CERN during 2002-2004. Then the calibration
with sourcing were done for all HF wedges. During 2004-2006 I
participated similar studies for other HCAL wedges. The relative
(tower-to-tower) calibration of HCAL was performed using radioactive sources
as part of commissioning the HCAL Barrel wedges in the CMS surface hall (SX5)
in 2005 and 2006. A separate detector project
that I was involved as one of the leading physicist was the online radiation
monitoring of HF (RADDAM online). This is completely new radiation monitoring
detector, based on the measurement of the aging at one end of the fibers which are inside HF absorbers. Being at both ends
of CMS, HF detectors are like end caps and the fibres
insides the HF wedges have two ends.
The ends which are closer to the interaction point
(IP) are aged more than the other end. We have developed an online method to
measure the aging at the end closer to IP. Starting this project in 2002,
after designing, developing, installing, testing and calibrating the RADDAM
detectors they were ready to use at the first data taking of LHC in 2008.
Presently they are performing well and measuring the radiation damage on HF fibres during LHC collisions. Using this data HF channels
are re-calibrated during data taking period. In 2007 all
the CMS sub-detectors were lowered down installed in the cavern. During
2006-2008 my main task was to commission hadron calorimeter. For this work I
have received CMS award. The
commissioning work in the underground cavern included collecting data using subdetector DAQ systems (local runs) and central CMS DAQ
and trigger systems (global runs). The global runs deploy larger and larger
parts of detectors, as they are built and commissioned detector and then are
included into simulations and data analysis. The main steps of the
commissioning in the underground cavern were tests using local runs
(pedestals, LED); synchronization of various sub-detector systems (Muon, Calorimetry, Tracker);
global commissioning runs (using cosmic ray triggers); preparing for 24
hours/7 days operation. Then, I worked on full integration of HCAL with CMS
system, monitoring of HCAL hardware (pedestals, LED), participation in CMS
global runs. HF was the first detector in CMS which took
data with cosmic muons. For this work I have received CMS
award. When the LHC data taking started, I worked as HCAL online operator and
done various data taking shifts (DAQ, Data Quality Monitoring Trigger, run
coordination). In 2010,
after being a faculty member in the Technical University Physics department,
I initiated the process in order that our institute become
a member of CMS. After my presentation at the CMS Collaboration Board, our institute have been accepted. Since then, I \D4m the team
leader of the Istanbul Technical University group and a member of CMS
Collaboration Board. I\D5m also a member of the CMS-HCAL Institutional Board. In 2011, my proposal to the Turkish Atomic Energy Authority was granted.
First project (Radiation
Monitoring & Hadronic Calorimeter Detector
Upgrade Studies at the CERN CMS Experiment) was between 2001-2014 and it is accomplished
successfully. My second grant which is Detector
upgrade for phase II and new particles search beyond the Standart
Model in the
LHC- CMS experiment is still an ongoing project. Since 2011,
my graduate students have been working for CMS experiment and mainly on HCAL.
Some of them are also looking to LHC data, mainly in the SUSY search group. |