{{Short description|Indian physicist}} {{Use British English|date=July 2015}} {{Use dmy dates|date=May 2026}} {{Infobox scientist | name = Swapan Chattopadhyay | image = SwapanC.png | image_size = | caption = | birth_date = {{Birth date and age|df=yes|1951|12|26}} | birth_place = Calcutta, West Bengal, India | alma_mater = University of Calcutta (BSc)<br />IIT, Kharaghpur (MSc)<br />University of California, Berkeley (MS, PhD) | thesis_title = On stochastic cooling of bunched beams from fluctuation and kinetic theory | thesis_url = https://escholarship.org/uc/item/4f67r1ns | doctoral_students = | known_for = | influences = | awards = | citizenship = United States | signature = Swapan Ingram Signature.png | spouse = Janet Chaterji | children = 2 | field = Physics | work_institution = SLAC and Stanford University (2021–)<br/>Northern Illinois University and Fermi National Accelerator Laboratory (2014–)<br/> Cockcroft Institute (2007–2014)<br/>Universities of Liverpool, Manchester and Lancaster, UK (2007–2014)<br/>Thomas Jefferson National Accelerator Facility (2001–2007)<br/>University of California at Berkeley (1974–1982, 1984–2001, 2009–2011, 2013–2015, 2023–)<br/>Lawrence Berkeley National Laboratory (1976–1982, 1984–2001)<br/>CERN (1982–1984, 2008–) | doctoral_advisors = Joseph J. Bisognano | academic_advisors = Prof. Wulf Kunkel<br/> Prof. Owen Chamberlain | prizes = }}
'''Swapan Chattopadhyay''' (born 26 December 1951) is an Indian American physicist who received his PhD from the University of California (Berkeley) in 1982.<ref name=":0">{{Cite journal|last=Chattopadhyay|first=Swapan|date=1982-09-01|title=On stochastic cooling of bunched beams from fluctuation and kinetic theory|url=https://escholarship.org/uc/item/4f67r1ns|language=en}}</ref>
Chattopadhyay is part-time Faculty at University of California at Berkeley, adjunct professor of photon science at SLAC, Stanford University, and emeritus president's professor at Northern Illinois University (NIU) and distinguished scientist emeritus at Fermi National Accelerator Laboratory (Fermilab), where he was a member of the director's senior leadership team and was director of the Cooperative Research and Development Agreement between Fermilab and NIU.<ref>{{Cite web|title=NIU Today – NIU, Fermilab land noted physicist in joint appointment|url=https://www.niutoday.info/2014/07/11/niu-fermilab-land-noted-physicist-in-joint-appointment/|access-date=2021-04-26|website=NIU Today|language=en-US}}</ref><ref>{{cite web |title=Berkeley Physics page |url=https://physics.berkeley.edu/people/swapan-chattopadhyay-chaterji |access-date=3 May 2023}}</ref>
Chattopadhyay is a Fellow of the American Physical Society,<ref>{{Cite web|title=APS Fellow Archive|url=http://www.aps.org/programs/honors/fellowships/archive-all.cfm|access-date=2021-04-23|website=www.aps.org|language=en}}</ref> American Association for the Advancement of Science,<ref>{{Cite journal|last=Science|first=American Association for the Advancement of|year=2005|title=AAAS News and Notes|url=https://www.science.org/doi/10.1126/science.310.5748.634|journal=Science|language=en|volume=310|issue=5748|pages=634–637|doi=10.1126/science.310.5748.634|s2cid=220094341|issn=0036-8075|url-access=subscription}}</ref> Institute of Physics (UK), Royal Society of Arts, Manufactures and Commerce (UK) and Corresponding Fellow of the Royal Society of Edinburgh<ref>{{Cite web|url=https://www.rse.org.uk/fellow/swapan-chattopadhyay/|title=Professor Dr Swapan Chattopadhyay CorrFRSE|date=2019-03-15|website=The Royal Society of Edinburgh|language=en-GB|access-date=2019-03-15}}</ref> and a member of many international panels and committees, including the "International Committee for Future Accelerators" and the DESY Science Council (2008–2013).<ref>{{Cite web|date=2013-04-05|title=DESY – SC – Members Scientific Council (September 2012)|url=http://sc.desy.de/e7/|access-date=2021-04-26|archive-url=https://web.archive.org/web/20130405111813/http://sc.desy.de/e7/|archive-date=5 April 2013}}</ref><ref>{{Cite web|date=May 2017|title=Professional resume: Prof. Swapan Chattopadhyay|url=https://www.niu.edu/clas/physics/_pdf/directory/Chattopadhyay-CV.pdf|website=Northern Illinois University, Department of Physics}}</ref>
==Early life and education==
===Early childhood=== {{BLP unreferenced section|date=January 2025}} Swapan Chattopadhyay was born in Calcutta, India, and spent his early childhood years in the Himalayan hill town of Darjeeling. His family moved to Calcutta in the early 1960s, where he went to high school and college.
===Higher education and early career=== Chattopadhyay completed his B.Sc. degree from Calcutta University in 1970 in physics. He continued his studies at the Indian Institute of Technology at Kharagpur, for his post-graduate studies, completing his M.Sc. degree with specialization in Particle Physics in 1972.{{citation needed|date=January 2026}}
Chattopadhyay then joined in 1972 the Physics department of the University of Oregon. However, over time, the draw towards the University of California at Berkeley got stronger and he joined the University of California at Berkeley in 1974, as a Ph.D. student in the Department of Physics. After flirting for two years (1974–1976) with the inimitable Berkeley brand of theoretical particle physics, then known as the "S-matrix" and "Bootstrap" theories of "strong interactions", under tutelage of Prof. Geoffrey Chew, Chattopadhyay was attracted away by accelerator physics dealing with charged particle and light beams. After having completed his PhD, he moved to CERN as an "attaché scientifique" in the Super Proton-Antiproton Synchrotron, contributing to program of stochastic cooling of antiproton beams.<ref name=":1" />
==Career== Chattopadhyay is noted for his pioneering contributions of innovative concepts, techniques and developments in high energy particle colliders, coherent and incoherent light sources, ultrafast sciences in the femto- and atto- second regimes, superconducting linear accelerators and various applications of interaction of particle and light beams.<ref>{{Cite web|date=2017-04-22|title=Swapan Chattopadhyay and Omar Chmaissem – NIU – Huskie Spotlight|url=https://www.niu.edu/spotlight/chattopadhyay-chmaissem.shtml|access-date=2021-04-26|archive-url=https://web.archive.org/web/20170422070929/https://www.niu.edu/spotlight/chattopadhyay-chmaissem.shtml|archive-date=22 April 2017}}</ref><ref name=":2">{{Cite web|date=14 November 2006|title=Swapan Chattopadhyay appointed to the UKs first Chair of Accelerator Physics and to be the Inaugural Director of The Cockcroft Institute|url=https://www.interactions.org/press-release/swapan-chattopadhyay-appointed-uks-first-chair-accelerator|access-date=2021-04-26|website=Interactions|language=en}}</ref> He has directly contributed to the development of many accelerators around the world, e.g. the Super Proton-Antiproton Synchrotron at CERN,<ref name=":1">{{Cite journal|last1=Chattopadhyay|first1=S|last2=Dôme|first2=Georges|last3=Linnecar|first3=Trevor Paul R|last4=Boussard|first4=Daniel|date=1984|title=Feasibility study of stochastic cooling of bunches in the SPS|url=https://cds.cern.ch/record/149968|language=en|doi=10.5170/CERN-1984-015.197}}</ref> the Advanced Light Source at Berkeley,<ref name="The LBL advanced light source">{{Cite journal|last1=Jackson|first1=A.|last2=Chattopadhyay|first2=S.|last3=Keller|first3=R.|last4=Kim|first4=C.|last5=Nishimura|first5=H.|last6=Selph|first6=F.|last7=Zisman|first7=M.|date=1988-06-01|title=The LBL advanced light source|osti=6841206|url=https://www.osti.gov/biblio/6841206|language=English}}</ref> the asymmetric-energy electron-positron collider PEP-II at Stanford,<ref>{{Cite book|last1=Wienands|first1=U.|last2=Anderson|first2=S.|last3=Assmannt|first3=R.|last4=Bharadwaj|first4=V.|last5=Cai|first5=Y.|last6=Clendenin|first6=J.|last7=Corredoura|first7=P.|last8=Decker|first8=F.J.|last9=Donald|first9=M.|last10=Ecklund|first10=S.|last11=Emma|first11=P.|title=Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366) |chapter=Beam commissioning of the PEP-II High Energy Ring |date=March 1999|chapter-url=https://ieeexplore.ieee.org/document/792123|volume=5|pages=2993–2995 vol.5|doi=10.1109/PAC.1999.792123|isbn=0-7803-5573-3|s2cid=91179466|url=http://cds.cern.ch/record/552632 }}</ref> the Continuous Electron Beam Accelerator facility (CEBAF) at Jefferson Lab and the Free-Electron Lasers at Jefferson and Daresbury Laboratories.<ref>{{Cite journal|last1=Freyberger|first1=Arne|last2=Beard|first2=Kevin|last3=Bogacz|first3=S.|last4=Chao|first4=Yu-Chiu|last5=Chattopadhyay|first5=Swapan|last6=Douglas|first6=David|last7=Hutton|first7=Andrew|last8=Merminga|first8=Nikolitsa|last9=Tennant|first9=Christopher|last10=Tiefenback|first10=Michael|date=2004-07-01|title=The CEBAF Energy Recovery Experiment: Update and Future Plans|osti=833909|url=https://www.osti.gov/biblio/833909|language=English}}</ref>
He was formerly the Sir John Cockcroft Chair of Physics jointly at the Universities of Liverpool, Manchester and Lancaster—the First Chair of accelerator physics in UK, named after the British Nobel Laureate credited with creating the field.<ref>{{Cite journal|date=March 2007|title=In brief|url=http://physicstoday.scitation.org/doi/10.1063/1.2718767|journal=Physics Today|language=en|volume=60|issue=3|pages=78|doi=10.1063/1.2718767|bibcode=2007PhT....60c..78K |issn=0031-9228 |last1=Kaplan |first1=Karen H. |url-access=subscription}}</ref><ref name=":2" /> In this role he was the Inaugural Director of the Cockcroft Institute (UK), having been appointed in April 2007. Prior to this he served as associate director of Thomas Jefferson National Accelerator Facility (2001–2007),<ref>{{cite journal|date=April 2001|title=People|url=https://cds.cern.ch/record/1733181|journal=CERN Courier|volume=41|issue=3|page=34}}</ref> staff/senior scientist and founding director of the Centre for Beam Physics at Lawrence Berkeley National Laboratory (1984–2001); and scientific attaché at CERN (1982–1984).<ref>{{Cite web|title=INSPIRE: Swapan Chattopadhyay author profile|url=https://inspirehep.net/authors/1013953|access-date=2021-04-26|website=inspirehep.net}}</ref>
After the period spent at CERN, Chattopadhyay returned to Lawrence Berkeley National Laboratory in 1984, where he led and defined the accelerator physics of the Advanced Light Source (ALS)<ref name="The LBL advanced light source"/> and contributed to the conceptual design of the Superconducting Super Collider (SSC),<ref>{{Cite journal|last1=Chao|first1=A.|last2=Chattopadhyay|first2=S.|last3=Courant|first3=E.|last4=Hutton|first4=A.|last5=Keil|first5=E.|last6=Kurokawa|first6=S.|last7=Lambertson|first7=G.|last8=Pedersen|first8=F.|last9=Rees|first9=J.|last10=Seeman|first10=J.|last11=Sessler|first11=A.|year=1990|title=Workshop summary|url=https://aip.scitation.org/doi/abs/10.1063/1.39765|journal=AIP Conference Proceedings|volume=214|issue=1|pages=2–5|doi=10.1063/1.39765|bibcode=1990AIPC..214....2C |issn=0094-243X|url-access=subscription}}</ref> pioneered the accelerator physics which underpinned the Berkeley-Stanford asymmetric B-factory (PEP-II) for CP-violation studies, and initiated the Berkeley FEL/Femtosecond X-ray Source and Laser-Plasma Acceleration development. He was a senior scientist, a guest professor, and the founder/director of the Center for Beam Physics at Berkeley,<ref>{{Cite web|date=April 2017|title=ATAP News, April 2017|url=https://atap.lbl.gov/atap-news-april-2017/|access-date=2021-04-26|website=atap.lbl.gov}}</ref> until his move to Thomas Jefferson National Accelerator Facility in 2001 as the associate laboratory director for accelerators. At Thomas Jefferson National Accelerator Facility, he made critical advancements in microwave superconducting linear accelerators leading the way to current and future grand instruments of science such as the high precision CEBAF and its 12 GeV upgrade for precision research in hadronic physics,<ref>{{Cite journal|last1=Freyberger|first1=Arne|last2=Beard|first2=Kevin|last3=Bogacz|first3=S.|last4=Chao|first4=Yu-Chiu|last5=Chattopadhyay|first5=Swapan|last6=Douglas|first6=David|last7=Hutton|first7=Andrew|last8=Merminga|first8=Nikolitsa|last9=Tennant|first9=Christopher|last10=Tiefenback|first10=Michael|year=2004|title=The CEBAF Energy Recovery Experiment: Update and Future Plans|url=https://www.osti.gov/biblio/833909|journal=|osti=833909|language=English}}</ref> Spallation Neutron Source at Oak Ridge National Laboratory, USA to advance neutron sciences and novel materials research, and the current superconducting version of the International Linear Collider, to name a few. His research at the Cockcroft Institute in UK included development of sources of "ultra-cold" relativistic free electron beams to advance coherent electron diffraction techniques; production of novel coherent and ultra-short pulses of photons (e.g. x-ray FELs); novel acceleration methods; investigation of photonic crystals and metamaterial structures for charged particle acceleration; novel high energy colliders.
While working for Fermilab and Northern Illinois University he contributed to cavity searches for dark matter; investigation of ultra-light dark matter and dark energy via atom interferometry, and the creation of the Matter-wave Atomic Gradiometer Interferometric Sensor (MAGIS-100) experiment.<ref>{{cite journal |last1=Abe |first1=Mahiro |last2=Adamson |first2=Philip |last3=Borcean |first3=Marcel |last4=Bortoletto |first4=Daniela |last5=Bridges |first5=Kieran |last6=Carman |first6=Samuel P |last7=Chattopadhyay |first7=Swapan |last8=Coleman |first8=Jonathon |last9=Curfman |first9=Noah M |last10=DeRose |first10=Kenneth |last11=Deshpande |first11=Tejas |last12=Dimopoulos |first12=Savas |last13=Foot |first13=Christopher J |last14=Frisch |first14=Josef C |last15=Garber |first15=Benjamin E |last16=Geer |first16=Steve |last17=Gibson |first17=Valerie |last18=Glick |first18=Jonah |last19=Graham |first19=Peter W |last20=Hahn |first20=Steve R |last21=Harnik |first21=Roni |last22=Hawkins |first22=Leonie |last23=Hindley |first23=Sam |last24=Hogan |first24=Jason M |last25=Jiang (姜一君) |first25=Yijun |last26=Kasevich |first26=Mark A |last27=Kellett |first27=Ronald J |last28=Kiburg |first28=Mandy |last29=Kovachy |first29=Tim |last30=Lykken |first30=Joseph D |last31=March-Russell |first31=John |last32=Mitchell |first32=Jeremiah |last33=Murphy |first33=Martin |last34=Nantel |first34=Megan |last35=Nobrega |first35=Lucy E |last36=Plunkett |first36=Robert K |last37=Rajendran |first37=Surjeet |last38=Rudolph |first38=Jan |last39=Sachdeva |first39=Natasha |last40=Safdari |first40=Murtaza |last41=Santucci |first41=James K |last42=Schwartzman |first42=Ariel G |last43=Shipsey |first43=Ian |last44=Swan |first44=Hunter |last45=Valerio |first45=Linda R |last46=Vasonis |first46=Arvydas |last47=Wang |first47=Yiping |last48=Wilkason |first48=Thomas|display-authors=5 |title=Matter-wave Atomic Gradiometer Interferometric Sensor (MAGIS-100) |journal=Quantum Science and Technology |date=1 October 2021 |volume=6 |issue=4 |pages=044003 |doi=10.1088/2058-9565/abf719|arxiv=2104.02835 |bibcode=2021QS&T....6d4003A |s2cid=209178030 }}</ref><ref>{{cite journal|title=Faces and places: Chattopadhyay returns to new challenges in the US|journal=CERN Courier|date=February 2014|volume=54|issue=7|page=32|url=http://iopp.fileburst.com/ccr/archive/CERNCourier2014Sep-digitaledition.pdf|access-date=31 March 2015|archive-date=23 September 2020|archive-url=https://web.archive.org/web/20200923152956/http://iopp.fileburst.com/ccr/archive/CERNCourier2014Sep-digitaledition.pdf|url-status=dead}}</ref> Having contributed to the conception, design, construction, commissioning and operation of numerous accelerators for particle and nuclear physics, photon and neutron sciences around the world, with significant research accomplishments in advanced particle and photon beam physics,<ref>{{cite journal|last1=Chattopadhyay|first1=Swapan|title=Viewpoint: Accelerators for nano- and biosciences|journal=CERN Courier|date=October 2002|volume=42|issue=8|page=46|url=https://cds.cern.ch/record/1733391}}</ref><ref>{{cite journal|last1=Chattopadhyay|first1=Swapan|title=Viewpoint: Amazing particles and light|journal=CERN Courier|date=March 2007|volume=47|issue=2|page=50|url=https://cds.cern.ch/record/1734043}}</ref> and mentoring scientists around the world, in the developing nations in particular, in accelerator developments as a unifying global force among nations, Swapan Chattopadhyay is a frequently invited speaker and advisor at professional societies and government research agencies, serving on numerous editorial, advisory and review committees throughout the world.
He served as the Vice-Chair, Chair-elect, Chair and Past-Chair of the American Physical Society's Division of Physics of Beams (2007–2011). Chattopadhyay has delivered lectures throughout the world e.g. Saha Memorial Lecture,<ref>{{Cite web|last=|first=|title=Past Saha Memorial Lectures|url=http://www.saha.ac.in/web/?view=article&id=678&Itemid=|access-date=2021-04-26|website=Saha Institute of Nuclear Physics|language=EN-US}}</ref> Homi Bhabha Lecture, Raja Ramanna Memorial Lecture, and Cavendish Lecture among many.
==References== {{Reflist|2}}
==External links== * [https://inspirehep.net/author/profile/Swapan.Chattopadhyay.1 Scientific publications of Swapan Chattopadhyay] on INSPIRE-HEP * {{cite web|title=Atomic Interferometry to Probe the early and dark universe -Matter-wave.. by Swapan Chattopadhyay|date=6 October 2022|publisher=International Centre for Theoretical Sciences|website=YouTube|url=https://www.youtube.com/watch?v=o5OSkPDKJ9E}} * {{cite web|title=Maxwell's Demon Goes Optical by Swapan Chattopadhyay|date=15 November 2022|publisher=International Centre for Theoretical Sciences|website=YouTube|url=https://www.youtube.com/watch?v=m-5krx3N1yY}} * {{cite web|title=Beaming into Matter and Life with Particles and Light by Swapan Chattopadhyay|date=27 November 2022|publisher=International Centre for Theoretical Sciences|website=YouTube|url=https://www.youtube.com/watch?v=vXXYN22sGoc}}
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{{DEFAULTSORT:Chattopadhyay, Swapan}} Category:1951 births Category:Accelerator physicists Category:People associated with CERN Category:IIT Kharagpur alumni Category:20th-century Indian physicists Category:Living people Category:People associated with Fermilab Category:University of Calcutta alumni Category:University of California, Berkeley alumni Category:Scientists from Kolkata Category:Fellows of the American Physical Society