Tootfinder

Proton Energy Dependence of Radiation Induced Low Gain Avalanche Detector Degradation
Veronika Kraus, Marcos Fernandez Garcia, Luca Menzio, Michael Moll
https://arxiv.org/abs/2602.01800 https://arxiv.org/pdf/2602.01800 https://arxiv.org/html/2602.01800
arXiv:2602.01800v1 Announce Type: new
Abstract: Low Gain Avalanche Detectors (LGADs) are key components for precise timing measurements in high-energy physics experiments, including the High Luminosity upgrades of the current LHC detectors. Their performance is, however, limited by radiation induced degradation of the gain layer, primarily driven by acceptor removal. This study presents a systematic comparison of how the degradation evolves with different incident proton energies, using LGADs from Hamamatsu Photonics (HPK) and The Institute of Microelectronics of Barcelona (IMB-CNM) irradiated with 18 MeV, 24 MeV, 400 MeV and 23 GeV protons and fluences up to 2.5x10^15 p/cm2. Electrical characterization is used to extract the acceptor removal coefficients for different proton energies, whereas IR TCT measurements offer complementary insight into the gain evolution in LGADs after irradiation. Across all devices, lower energy protons induce stronger gain layer degradation, confirming expectations. However, 400 MeV protons consistently appear less damaging than both lower and higher energy protons, an unexpected deviation from a monotonic energy trend. Conversion of proton fluences to 1 MeV neutron-equivalent fluences reduces but does not eliminate these differences, indicating that the standard Non-Ionizing Energy Loss (NIEL) scaling does not fully account for the underlying defect formation mechanisms at different energies and requires revision when considering irradiation fields that contain a broader spectrum of particle types and energies.
toXiv_bot_toot

Dang it all. The dryer at our holiday accommodation appears to have, bizarrely, melted the zip (just a small section, but enough) on my Cactus shorts... and now I'm perpetually flying low. These are my 90% of days-type clothing in summer. Sigh. Luckily, I'll be able to take them in for repairs shortly... assuming I can find something to wear while they're at the shop.

The January wildfires that ripped through Los Angeles forced the state to spend billions in disaster aid
-- and delay tax filings for LA residents.
The cost of Medi-Cal,
the state-run health insurance program for low-income residents, ballooned to $6 billion more than anticipated.
Donald Trump’s on-again-off-again tariff policies rocked the stock market,
which California heavily relies on for tax revenue.
And the state lodged a flurry of lawsuits again…

Your one-minute guide to California’s budget outlook this year
Spoiler alert: California’s deficit grows, uncertainty looms, and state leaders may have fewer options than before to tackle it.

My neighbor took this picture of our shared backyard last night.
#NYC #snowmaggedon2026 #Queens

Wow, that was a wild night. Hail/sleet, thunder & lightning, lots of water falling from the sky.

A look at the growth of Belfast in Northern Ireland as a home for producing TV shows, following the success of the comedy Derry Girls (Hollie Richardson/The Guardian)
https://www.theguardian.com/tv-and-radio/2026/feb/13/belfast-home-of-quality-tv-drama…

Donald Trump followed through on his threats to sue the BBC over its editing of his remarks on Jan. 6, 2021, for a documentary.
The following can be attributed to Seth Stern, director of advocacy at Freedom of the Press Foundation (FPF):
“If any ordinary person filed as many frivolous multibillion-dollar lawsuits as Donald Trump, they’d be sanctioned and placed on a restricted filers list.
By my count, Trump has demanded at least $65 billion in damages from media outlets i…

Trump’s BBC lawsuit is nonsense, like his others
His frivolous damages theory concedes that Trump views the presidency as a for-profit venture

Oooo, RNZ's NineToNoon is advertising a segment on 'open source granny flats' being developed by Prof Anthony Hōete (Ngāti Awa) at the University of Auckland at 9:35 this morning... interesting. I'll post a link to the podcast following.

Welp, after a day or two of fermentation and a few hours preparing the accompaniments, like the potato filling, the 'gunpowder' to sprinkle over it, and both tomato and coconut chutneys (all made from scratch, even involving cracking a fresh coconut!), I've made my first ever dosas. I'm quite chuffed by the result. It's a lot of work for a one-off...