BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Searching for light-dark matter with Spherical Proportional Counte
 rs - Prof./Dr. Patrick Knights\, University of Birmingham
DTSTART:20250401T100000Z
DTEND:20250401T110000Z
UID:TALK229810@talks.cam.ac.uk
CONTACT:Dr. Aashaq Shah
DESCRIPTION:The precise particle nature of dark matter\, which makes up mo
 st of the matter in the universe\, remains elusive and is one of the leadi
 ng open questions in physics. The NEWS-G collaboration is searching for li
 ght dark matter candidates with a novel gaseous detector concept\, the sph
 erical proportional counter. Access to the mass range from 0.05 to 10 GeV 
 is enabled by the combination of low energy threshold\, light gaseous targ
 ets (H\, He\, Ne)\, and highly radio-pure detector construction. Initial N
 EWS-G results obtained with SEDINE\, a 60 cm in diameter spherical proport
 ional counter operating at LSM (France)\, excluded for the first time WIMP
 -like dark matter candidates down to masses of 0.5 GeV. The collaboration 
 currently operates a 140 cm in diameter spherical proportional counter\, S
 NOGLOBE\, constructed at LSM using 4N copper with 500 um electroplated inn
 er layer\, which is currently collecting data in SNOLAB (Canada). This sem
 inar will discuss recent NEWS-G results and the developments in spherical 
 proportional counter instrumentation and detector understanding that contr
 ibuted to the first results with SNOGLOBE from its commissioning data. The
  next stage of the experiment\, using detectors constructed from ultra-pur
 e electroformed copper directly in the underground laboratory where they w
 ill be operated will be presented\, with the construction of a 30 cm in di
 ameter detector commencing this year in the Boulby underground laboratory\
 , and the plans to construct a larger scale detector\, DarkSPHERE - with b
 oth detectors having the potential to break new ground in the dark matter 
 puzzle. 
LOCATION:Seminar Room -- RDC D2.002 
END:VEVENT
END:VCALENDAR