Cosmic Frontier Experiment StatusAugust 25, 2014

Experiment Location Status Start of operations

Nominal end of operations

Physics

SuperCDMS Soudan Operating Mar 2012 Mar 2015? Dark Matter

COUPP/PICO 2L SNOLAB Operating Dec 2013 Dec 2014? Dark Matter

COUPP/PICO 60 SNOLAB Operating June 2013 Dec 2015? Dark Matter

Darkside 50 LNGS (Gran Sasso)

Operating/Calibrating

Jan 2014 Dec 2016? Dark Matter

DAMIC SNOLAB Operating Dec 2012 Dec 2014 Dark Matter

Dark Energy Survey

CTIO, Chile Operating Sep 2013 Feb 2018 Dark Energy

Pierre Auger Argentina Operating 2008 2015 (for FNAL)?

High Energy Cosmic Rays

Holometer Meson Lab Commissioning Spring 2014 2015 Spacetime

COUPP/PICO Operations Summary• Main objective over next 6 months is to continue

particulate sampling and understand particulate nucleation of bubbles– Water from both PICO-2L and COUPP60 extracted

via filter in early July– Clear evidence for particulates in both, samples

sent to PNNL for radioactivity and chemical analysis

COUPP/PICO Operations Summary• Test chamber set up at

Fermilab to do spike tests, now running at Lab A

• Testing radon emanation sources now

• Will do particulate spikes through Aug-Sept

• Season 2 started on August 15, 2014! First few nights had excellent seeing (resolution), setting some records ~0.6 ‘’

• Two large air conditioners installed and started running to control daytime temperatures. This will further improve seeing.

• Year 1 data processing is nearly complete. Y1A1 dataset will be released later this Fall. Shortly after that initial public data release will take place.

• Serendipitous discovery of superluminous supernova. One of several papers to be submitted this Fall from early DES data.

Dark Energy SurveySeeing on Aug. 15

Supernova DES13S2cmm

Before SN After SN Subtraction

Holometer (E-990) Operations Status:

• Stability is most impacted by low frequency external noise. Recent fixes:• Tethered external hut to concrete blocks to reduce wind noise below 5 Hz transmitted into

ground motions• Tuned feedback loops to add resonant gain at problematic frequencies and reduce gain

elsewhere to maintain phase margin• Installed laser periscope enclosures designed to reduce turbulent flow of air driven by

temperature gradients (and hence reduce refraction noise)

8/25/2014

• Design beam intensity already achieved with sensitivity to 10-20 m/rtHz disturbance amplitude

• Analysis is underway on 30 minute dataset for first graduate student thesis

• Focus now on improving operations stability to more easily gather 10’s of hours of data