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All Federal Grant Awards
Project Grant DESC0025523
Award Date
7/1/24
Completion Date
6/30/27
Dollars Obligated
$1.7M
Overview
Activity
3
Transactions
3
Subawards
2
Similar Awards
Federal Agency
Office of Science
Awardee
The Regents Of The University Of California (GS3YEVSS12N6)
Federal Grant Program
81.049
Assistance Type
Project Grant
Place of Performance
Berkeley, CA 94710, USA
Update #1
Update #2
RESEARCH IN THE COSMIC FRONTIER AT UC BERKELEY
Posted 9/17/24
5
1
Mod #
Description
ReasonForModification
Federal Obligation
Date
Not listed
RESEARCH IN THE COSMIC FRONTIER AT UC BERKELEY
$550.0k
6/2/26
Not listed
RESEARCH IN THE COSMIC FRONTIER AT UC BERKELEY
$550.0k
8/11/25
Not listed
RESEARCH IN THE COSMIC FRONTIER AT UC BERKELEY
$550.0k
9/17/24
5
1
GrantNumber
Description
Subgrantee
Prime Award
Dollars Obligated
Updated At
00011943S
In Year 1, the University of Pennsylvania (Penn) will test the performance of SiPM read- out for a dichroicon. We will also procure and measure ALD dichroic _lters from RAYTUM. We will make measurements of an existing dichrocion with a pixellated LAPPD at Berkeley. In Year 2, we will perform a second round of SiPM measurements, including cooling of the SiPMs to reduce dark noise. We plan measurements of a curved ALD dichroic _lter from RAYTUM, which will cover the PMT face. In Year 3, Penn will use our Chroma simulation package to determine the optimal for a monolithic dichroicon, and procure the glass substrate for a cone.
The Trustees Of The University Of Pennsylvania
Project Grant DESC0025523
$172.1k
8/25/26
00011942S
Specifically, Boston University (BU) will focus on synthesis of the detection medium, exploring options such as water-soluble wavelength shifters, alternative surfactants in water-based scintillators, alternative fluors, and alternative scintillator base materials. We have identified several key cocktails with a slower scintillation time profile relative to that of LAB+PPO (a standard liquid scintillator used in many experiments). This works to enhance the Cherenkov detection efficiency. We will continue to investigate the phase space of fluors and solvents to optimize the light yield, while also attempting to tune the emission spectrum to best match the PMT quantum efficiencies for large detectors. Novel solutions using quantum dots, either commercially purchased or made in-house, will be investigated as a technique to enhance Cherenkov separation in WbLS. Initial characterization of these new cocktails will include light yield, stability, and transparency. Further characterization of promising cocktails will take place at UC Berkeley and LBNL. PI Grant at BU will lead the synthesis effort with the help of a graduate student and postdoc. Synthesis will take place in GrantAca'a"cs Class 1000 chemical clean lab at BU. Select samples of slow WbLS made with Pyrene, Diphenylanthracene, Anthracene, and Acenaphtene will be altered in terms of their solvent concentrations, playing with variable concentrations of LAB and DIN, and also PPO, bis-MSB, and POPOP, to optimize light yield and transparency. Ion loading, in the form of Li compounds and quantum dots will be studied for these samples of WbLS. The deliverables and milestones are summarized below.
Trustees Of Boston University
Project Grant DESC0025523
$129.1k
8/25/26