BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:163Ho implantation in TES-based micro-calorimeters for the HOLMES 
 experiment.
DTSTART;VALUE=DATE-TIME:20230908T102000Z
DTEND;VALUE=DATE-TIME:20230908T104000Z
DTSTAMP;VALUE=DATE-TIME:20260714T135252Z
UID:indico-contribution-3190@indico.tlabs.ac.za
DESCRIPTION:Speakers: Matteo De Gerone (INFN Genova)\nThe HOLMES experimen
 t aims to directly measure the ν mass studying the 163Ho electron capture
  decay spectrum\, developing arrays of TES-based micro-calorimeters implan
 ted with O(102 Bq/detector) $^{163}$Ho atoms. \nThe $^{163}$Ho embedding i
 nside detectors is a crucial step of the experiment. Because $^{163}$Ho is
  produced by neutron irradiation of a $^{162}$Er sample\, the source must 
 be separated from a lot of contaminants. A chemical process removes every 
 species other than Ho\, but it is not sufficient to remove all background 
 sources: in particular\, $^{166m}$Ho beta decay can produce fake signal in
  the region of interest. For this reason a dedicated implantation / beam a
 nalysis system has been set up and commissioned in Genoa’s laboratory. I
 t is designed to achieve more than 5σ separation @163/166 a.m.u. simultan
 eously allowing an efficient Ho atoms embedding in the absorbers. The mach
 ine performances in terms of achievable current\, beam profile and mass se
 paration have been studied with MonteCarlo simulations and evaluated by me
 ans of calibration runs using Cu\, Mo\,  Au and 165Ho beams. In this work\
 , the commissioning of the machine and the production of the first set of 
 low activity (O(1Bq/detector)) implanted TES will be described.\n\nhttps:/
 /indico.tlabs.ac.za/event/112/contributions/3190/
LOCATION: Meeting Room 2.61 - 2.63
URL:https://indico.tlabs.ac.za/event/112/contributions/3190/
END:VEVENT
END:VCALENDAR