IIT Bombay joins India-CMS proposal Pradeep Sarin, Assistant Professor, Department of Physics, IIT Bombay Page 1 of 13
Overlap of research interests: IIT-B & BARC Physics: Studies of jet fragmentation in p+p and A+A collisions Detector R&D: Silicon detector systems Sensor Readout Characterization Page 2 of 13
Physics: Why are jets in p+p important? Studied for 60 years since proton discovery Studied at Fermilab (CDF) and SLAC background for LHC physics New Discoveries Must understand Before we can get this Plot from W. Riegler, CERN Max managable DAQ rate at current technology Page 3 of 13
Physics: Jets in A+A are even more imporan From the earliest days, our theoretical understanding of A+A collisions has relied on jet formation. In the RHIC era, jets became an important tool for probing the properties of hot, dense medium Page 4 of 13
Physics: Why jets matter at LHC A+A From Gulassy et al Phys Rev B538 (2002) 282-288 Simply higher energy, higher p T jets and CMS can measure jets out to 100 s of GeV/c Page 5 of 13
Physics: Why jets really matter at LHC A+A By now, we think that something like a QGP ideal fluid is created in A+A collisions at > 200 AGeV This is the final state. What is the initial state? Glauber nuclei? Color Glass Condensate? What are the medium properties? Ideal fluid? Viscous AdS? Page 6 of 13
R&D infrastructure available at IIT-B Strategy: Use existing facilities to get a running start Build HEP-specific lab http://www.ee.iitb.ac.in/~nanoe Lithography Double sided mask aligner (4, 6 wafers) Single sided mask aligner SEM with lithography Laser writer Reactive Ion Etching Page 7 of 13
Silicon design and fabrication Deposition, Growth and Annealing systems Dielectric sputter system Electron beam evaporation Hot wire CVD, Inductively couple plasma CVD Metal sputtering system (NORDIKO) Pulsed laser deposition Polymer evaporation system Rapid thermal processing Silanization setup Thermal evaporation system 2 x Ultech furnaces 14 class 100 cleanrooms Radiation Hard Detector development Page 8 of 13
Detector characterization Electrical characterization 7 probe stations, all with triaxial thermo chucks Material and structural characterization Atomic Force Microscope Spectroscopic ellipsometry Flouroscence microscope Scanning electro-chemical microscope Potentiostat FT-IR system surface profilometer UV-VIS-NIR spectrophotometer Bonding Wire bonder Wafer bonder (4, 6 ) Page 9 of 13
Detector characterization Note: CV curve of sensor Detector characterization! Pradeep Sarin setting up a det. char lab class 1000 clean room class 100 laminar flow workstations radiation source Bonding Wire bonder Wafer bonder low-noise readout electronics (4, 6 ) Target: end-to-end string test of assembled detector module with prototype electronics Ability to deliver sensors characterized with Landau signal distributions Purchased by IIT-B Physics Page 10 of 13
Key points on detector R&D IIT-B CEN is very well equipped Funded by Ministry for Comm. & InfoTech Fully staffed by expert technicians Primary goal is to train students in advanced electronics engineering techniques Pradeep Sarin is setting up lab with a subset of HEP-specific equipment Motivated manpower + available tools = R&D Page 11 of 13
Manpower brought in by IIT-B Past collaborators: Future: Prof. Juzer Vasi, EE, IIT-B Head, IITB CEN Mentor Prof. Bolek Wyslouch, MIT, Convenor, HI CMS Thesis advisor Heinz Pernegger, CERN Div EP Now Head, ATLAS SCT PHOBOS-MIT, post-doc Prof. Gunter Roland, MIT. Convenor, HI CMS PHOBOS Markus Friedl, Head HEPHY, Vienna Head, CMS Inner tracker PHOBOS-MIT co-graduate ~ 2 UG students/yr (1yr project) ~ 2 PG students/yr (MSc/PhD) 1 UG + 2 PG students this year (see Mukund Madhav s talk @ 0900 tomorrow) 1 UG student on his way to MIT PhD next week. Page 12 of 13
Summary Jet fragmentation is important at LHC: CMS has unique high p T capabilities Jets important as QCD background in p+p Crucial for detailed study of QGP in A+A Synergy in silicon detector R&D: IIT-B and BARC have overlapping interests Near term: CMS upgrade, Long term: FAIR, spinoffs Infrastructure already at IIT-B CEN, more on the way Ready manpower motivated IIT-B students Page 13 of 13