DC25_SLIDES_KeynoteElectronicsForFutureHigh_Haber_V2.pdf

1、Information Classification:GeneralWelcome to ConferenceJanuary 2830,2025Santa Clara Convention Center1ExpoJanuary 2930,2025 Electronics for Future High Energy Particle CollidersCarl HaberPhysics DivisionLawrence Berkeley National Labchhaberlbl.gov1/28/2025Carl Haber LBNL2Design Con 20251/28/2025Desi

2、gn Con 20253chargedchargedneutral H.Becquerel(1896):observes that certain elements emit an invisible energy radioactivity This indicates that there is more to natural structure and dynamics than atoms,the Periodic Table,and chemical reactions E.Rutherford cataloged the known forms of radiation accor

3、ding to their penetrating power and response to applied magnetic fields Particle physics begins with the attempt to understand radiation and the structure of matter beyond the atomRutherford Experiment What is the structure of the atom?In 1906-13 Rutherfords students,Geiger and Marsden,measure the a

4、ngular distribution of alpha particles scattered by a thin gold foil The technique is to count florescent flashes on a phosphor screen While most pass with little deflection they observe occasional(1/8000)at large scattering angles.Rutherford(1911)mathematically describes this as alphas scattering f

5、rom a“point-like”heavy charged nucleus.1/28/2025Design Con 20254Archetype Modern day experiments in particle physics are conceptually similar to Rutherfords experiment we are still trying to understand the structure of matter,but on even smaller scales.Rutherfords experiment includes many of the ele

6、ments found in todays high energy experiments Scattering angle of a particle(position)Rate of scattering into a particular angular interval(time)Sensitive detecting media florescent screen Readout system their eyes Data logging pencil and paper Data analysis Rutherfords scattering theory1/28/2025Des