<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class=""><font face="Arial" class=""><span style="font-size: 14px;" class="">Dear Colleagues,</span></font></div><div class=""><font face="Arial" class=""><span style="font-size: 14px;" class=""><br class=""></span></font></div><div class=""><font face="Arial" class=""><span style="font-size: 14px;" class="">Tomorrow’s colloquium will be given by <span style="caret-color: rgb(69, 69, 74);" class="">Ken Clark (</span><span style="caret-color: rgb(69, 69, 74); background-color: rgb(255, 255, 255);" class="">Queen's U/TRIUMF).</span></span></font></div><div class=""><span style="background-color: rgb(255, 255, 255); font-size: 14px;" class=""><font face="Arial" class="">We will have a Particle Physics “bring your own lunch” in the theory room from 12:30-13:30.</font></span></div><div class=""><span style="background-color: rgb(255, 255, 255); font-size: 14px;" class=""><font face="Arial" class="">Please join us.</font></span></div><div class=""><span style="background-color: rgb(255, 255, 255); font-size: 14px;" class=""><font face="Arial" class=""><br class=""></font></span></div><div class=""><div style="caret-color: rgb(69, 69, 74); font-family: Arial; font-size: 14px; color: rgb(69, 69, 74);" class=""><span style="background-color: rgb(255, 255, 255);" class="">Physics with bubble chambers</span></div><font color="#45454a" style="caret-color: rgb(69, 69, 74); font-family: Arial; font-size: 14px;" class="">Abstract: Bubble chambers have a long history of use in particle physics, starting with being used for particle discovery in the 1950s and moving through to their use in dark matter search experiments today. The many different target fluids which have been used have provided great flexibility in the use of this technology. In this talk I will start with a very brief history of these detectors and quickly move on to their use in the PICO experiment. After discussion of the stages and plans for that collaboration, a possibility of future improvements to the bubble chamber will be presented.</font></div><div class=""><span style="background-color: rgb(255, 255, 255); font-size: 14px;" class=""><font face="Arial" class=""><br class=""></font></span></div><div class=""><span style="background-color: rgb(255, 255, 255); font-size: 14px;" class=""><font face="Arial" class="">Best regards,</font></span></div><div class=""><span style="background-color: rgb(255, 255, 255); font-size: 14px;" class=""><font face="Arial" class=""><br class=""></font></span></div><div class=""><span style="background-color: rgb(255, 255, 255); font-size: 14px;" class=""><font face="Arial" class="">Oliver</font></span></div><span style="caret-color: rgb(69, 69, 74); background-color: rgb(238, 238, 238); font-size: 14px;" class=""><font face="Arial" class=""><div style="color: rgb(69, 69, 74);" class=""><span style="caret-color: rgb(69, 69, 74); color: rgb(69, 69, 74); background-color: rgb(238, 238, 238);" class=""><br class=""></span></div><div style="color: rgb(69, 69, 74);" class=""><br class=""></div></font></span></body></html>