PHYS 1444 – Section 003 Lecture #1AnnouncementsWho am I?Structure of MatterThe Standard ModelFermilab Tevatron and LHC at CERNSlide 7DØ Central Calorimeter 1990Slide 9Information & Communication SourceEvaluation PolicyHomeworksAttendances and Class StyleWhy do Physics?What do we want from this class?Brief History of PhysicsNeeds for Standards and UnitsDefinition of Base UnitsPrefixes, expressions and their meaningsHow do we convert quantities from one unit to another?Static Electricity; Electric Charge and Its ConservationSlide 22Electric Charge in the AtomInsulators and ConductorsInduced ChargeSlide 26Monday, Aug. 29, 2005 PHYS 1444-003, Fall 2005Dr. Jaehoon Yu1PHYS 1444 – Section 003Lecture #1Monday, Aug. 29, 2005Dr. Jaehoon YuToday’s homework is homework #2, due noon, next Monday!!•Who am I?•How is this class organized?•What is Physics?•What do we want from this class?•Brief history of physics•Some basics …•Chapter 21–Static Electricity and Charge Conservation–Charges in Atom–Insulators and Conductors–Induced ChargeMonday, Aug. 29, 2005 PHYS 1444-003, Fall 2005Dr. Jaehoon Yu2Announcements•Plea to you: Please turn off your cell-phones, pagers and computers •Reading assignment #1: Read and follow through all sections in appendix A by Wednesday, Sept. 1–A-1 through A-7•There will be a quiz on this and Ch. 21 on Wednesday, Sept. 7.Monday, Aug. 29, 2005 PHYS 1444-003, Fall 2005Dr. Jaehoon Yu3Who am I?•Name: Dr. Jaehoon Yu (You can call me Dr. Yu)•Office: Rm 242A, Science Hall•Extension: x22814, E-mail: [email protected] •My profession:High Energy Physics (HEP)–Collide particles (protons on anti-protons or electrons on anti-electrons, positrons) at the energies equivalent to 10,000 Trillion degrees–To understand•Fundamental constituents of matter•Forces between the constituents (gravitational, electro-magnetic, weak and strong forces)•Origin of Mass•Creation of Universe (Big Bang Theory)–A pure scientific research activity•Direct use of the fundamental laws we find may take longer than we want but •Indirect product of research contribute to every day lives; eg. WWWMonday, Aug. 29, 2005 PHYS 1444-003, Fall 2005Dr. Jaehoon Yu4High Energy Physics Structure of Matter10-10m10-14m10-15m<10-18m10-9mMatter Molecule Atom NucleusuQuark<10-19mprotons, neutrons,mesons, etc.top, bottom,charm, strange,up, downCondensed matter/Nano-Science/ChemistryAtomic PhysicsNuclearPhysicsBaryon(Hadron)Electron(Lepton)10-2mMonday, Aug. 29, 2005 PHYS 1444-003, Fall 2005Dr. Jaehoon Yu5The Standard Model•Assumes the following fundamental structure:Directly observed in 2000Discovered in 1995Monday, Aug. 29, 2005 PHYS 1444-003, Fall 2005Dr. Jaehoon Yu6Fermilab Tevatron and LHC at CERN•Present world’s Highest Energy proton-anti-proton collider –Ecm=1.96 TeV (=6.3x10-7J/p 13M Joules on 10-4m2)Equivalent to the kinetic energy of a 20t truck at a speed 80 mi/hrChicagoTevatronp p CDFDØ•World’s Highest Energy proton-proton collider in 2 years –Ecm=14 TeV (=44x10-7J/p 1000M Joules on 10-4m2)Equivalent to the kinetic energy of a 20t truck at a speed 212 mi/hrMonday, Aug. 29, 2005 PHYS 1444-003, Fall 2005Dr. Jaehoon Yu7DØ Detector: Run II30’ 30’ 50’ •Weighs 5000 tons•Can inspect 3,000,000 collisions/second•Will record 50 collisions/second•Records ~12.5M Bytes/second•Will record 2 Peta bytes in the current run.•Has over a 100 million partsMonday, Aug. 29, 2005 PHYS 1444-003, Fall 2005Dr. Jaehoon Yu8DØ Central Calorimeter 1990Monday, Aug. 29, 2005 PHYS 1444-003, Fall 2005Dr. Jaehoon Yu9qTimeppqgK“parton jet” “particle jet” “calorimeter jet”hadronsCHFHEMHighest ET dijet event at DØHighest ET dijet event at DØ0.69 GeV, 472E0.69 GeV, 475E21T11THow does an Event Look in a Collider Detector?Monday, Aug. 29, 2005 PHYS 1444-003, Fall 2005Dr. Jaehoon Yu10Information & Communication Source•My web page: http://www-hep.uta.edu/~yu/–Contact information & Class Schedule–Syllabus–Homework–Holidays and Exam days–Evaluation Policy–Class Style & Communication–Other information•Primary communication tool is e-mail: Register for PHYS1444-003-FALL05 e-mail distribution list as soon possible Instruction available in Class style & Communication–5 points extra credit if done by this Wednesday, Aug. 31–3 points extra credit if done by next Wednesday, Sept. 7•Office Hours: 2:30 – 3:30pm, Mondays and Wednesdays or by appointments–My office door is wide open for you!!!Monday, Aug. 29, 2005 PHYS 1444-003, Fall 2005Dr. Jaehoon Yu11Evaluation Policy•Term Exams: 45%–Total of three non-comprehensive term exams (10/12, 11/9 & 12/5)–Best two of the three will be used for the final grade–Each will constitute 22.5% of the total–Missing an exam is not permissible unless pre-approved•No makeup test•You will get an F if you miss any of the exams without a prior approval•Lab score: 20%•Homework: 20%•Pop-quizzes: 15%•Extra credits: 10% of the total–Random attendances–Strong participation in the class discussions–Other many opportunities•Will be on sliding scale unless everyone does very well100%Monday, Aug. 29, 2005 PHYS 1444-003, Fall 2005Dr. Jaehoon Yu12Homeworks•Solving homework problems is the only way to comprehend class material•An electronic homework system has been setup for you–Details are in the material distributed last week and on the web–https://hw.utexas.edu/studentInstructions.html –Download homework #1 (1 problem), attempt to solve it, and submit it You will receive a 100% credit for HW#1•This HW is due at 6pm today. So you still have some time to take advantage!–Roster will close next Wednesday, Sept. 7•16 of you have already signed up and solved the problem!! Great job!!!•Each homework carries the same weight!!•Home work will constitute 20% of the total A good way of keeping your grades high•Strongly encouraged to collaborate Does not mean you can copy•Take advantage of the Physics Clinic: 12 – 6pm, M – F, SH008Monday, Aug. 29, 2005 PHYS 1444-003, Fall 2005Dr. Jaehoon Yu13Attendances and Class Style•Attendances: –Will be taken randomly at the beginning of each class–Will be used for extra credits•Class style:–Lectures will be on electronic media•The lecture notes will be posted on the web AFTER each class–Will be mixed with
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