Tootfinder

On the contrary, people like RMS are celebrated. ¯\_(ツ)_/¯

Development and Testing of a Low Cost Ultrasonic Leak Detector
Senol Gulgonul
https://arxiv.org/abs/2506.04862 https://arxiv.org/pdf/…

Development and Testing of a Low Cost Ultrasonic Leak Detector
This study focuses on the development of an ultrasonic leak detection system utilizing the Arduino Nano 33 BLE Sense Rev2 board. The research aimed to create a compact and cost-effective solution for identifying leaks in high-pressure pipes. Algorithms were designed to enable lossless recording and processing of sound data captured by the onboard MEMS microphone. Key signal processing techniques, including the implementation of an IIR high-pass filter and RMS calculation, were employed to detec…

I think this will do nicely.
Folks were complaining about how long the AC RMS amplitude measurement in ngscopeclient took on large datasets, so I made it 67 times faster (as long as your GPU supports GL_ARB_gpu_shader_int64)
Benchmark: 50M point sinusoid, Xeon 6144 vs RTX 2080 Ti

Meta-heuristic design of a light-weight homologous backup structure of the primary reflector for the Large Submillimeter Telescope
Chihiro Imamura, Yoichi Tamura, Hiroaki Kawamura, Toshiaki Kimura, Akio Taniguchi, Mikio Kurita
#toXiv_bot_toot

So this power rail is interesting. It's 1.775 mV RMS and 42 mV p-p.
~5 mV p-p of 125 MHz triangular ripple (core operating frequency of the two Ethernet PHYs on the board, plus also ~500 MHz ringing on the 300 kHz switching transients reaching 42 mV p-p ( /- 21 mV).
This is probably not enough to cause any problems, all of the 1.0V supplies on the PHY are specced at /- 50 mV, but I don't like ripple :P
Like 2V5, this rail is generated by a MYMGK00504ERSR, but the s…

The VLA Frontier Fields Survey: A 6GHz High-resolution Radio Survey of Abell 2744
Esteban A. Orozco, Eric F. Jim\'enez-Andrade, Eric J. Murphy, Ian Smail, Emmanuel Momjian, Ian Heywood, Miguel Vega-Gutierrez, Christa DeCoursey
https://arxiv.org/abs/2506.20634

The VLA Frontier Fields Survey: A 6GHz High-resolution Radio Survey of Abell 2744
We present a 6GHz radio continuum image of the galaxy cluster Abell 2744 ($z = 0.307$) obtained with the Karl G. Jansky Very Large Array (VLA) as part of the VLA Frontier Fields program, whose goal is to explore the radio continuum emission from high-redshift galaxies that are magnified by foreground, massive galaxy clusters. With an rms noise of $\approx 1 μ$Jy beam$^{-1}$, at the phase center, and sub-arcsec angular resolution ($θ_{1/2}=0.82$ arcsec), this is the deepest and most detailed r…

Peering into the heart of darkness with VLBA : Radio Quiet AGN in the JWST North Ecliptic Pole Time-Domain Field
Payaswini Saikia, Ramon Wrzosek, Joseph Gelfand, Walter Brisken, William Cotton, S. P. Willner, Hansung B. Gim, Rogier A. Windhorst, Vicente Estrada-Carpenter, Ivan Yu. Katkov, Ingyin Zaw, Michael Rosenthal, Hanaan Shafi, Kenneth Kellermann, James Condon, Anton M. Koekemoer, Christopher J. Conselice, Rafael Ortiz III, Christopher N. A. Willmer, Brenda Frye, Norman A. Grogin,…

Peering into the heart of darkness with VLBA : Radio Quiet AGN in the JWST North Ecliptic Pole Time-Domain Field
We present initial results from the 4.8 GHz Very Long Baseline Array (VLBA) survey of the JWST North Ecliptic Pole Time-Domain Field (TDF). From 106 radio sources found in the Karl G. Jansky Very Large Array observations in the TDF, we detected 12 sources (11% detection rate) at 3.3 $μ$Jy rms sensitivity and 4 mas resolution. Most detections exhibit pc-scale emission (less than 40 pc) with high VLBA/VLA flux density ratios and brightness temperatures exceeding 10$^5$ K, confirming non-thermal …

Aaand here's what 1V0 looks like with a coaxial probe soldered directly across the bottom of the BGA.
Amazing what a difference you can get probing at a slightly different spot in the PDN.
The high frequency spikes are completely gone, 7.7 mV p-p and 1 mV RMS ripple. Still dominated by 125 MHz from the digital core of the PHYs.

MeerKAT HI observations of Low Surface Brightness/Ultradiffuse Galaxy Candidates Projected around Two Southern Loose Groups
Chandreyee Sengupta, Tom C. Scott, Hao Chen, Hyein Yoon, Yogesh Chandola, Mengtian Li, Gyula I. G. J\'ozsa, O. Ivy Wong, Yin-Zhe Ma, Patricio Lagos, Ruta Kale, Denis Tramonte
https://arxiv.org/abs/2506.…

MeerKAT HI observations of Low Surface Brightness/Ultradiffuse Galaxy Candidates Projected around Two Southern Loose Groups
A large catalogue of low surface brightness galaxies (LSBGs) from the Dark Energy Survey showed significant clustering around nearby galaxy groups and clusters. Using the HIPASS survey, we tried to determine the redshift of a sub-sample of these LSBGs and determine whether they were members of the groups they were projected near, but this was hampered by HIPASS's high spectral rms. This letter reports on MeerKAT H I observations to determine the redshifts of 52 LSBG candidates projected in the …

Synchronous Clock and RF Carrier Transmission for Radio Access Network Fronthaul
Kari Aaron Clark, Zun Htay, Zichuan Zhou, Amany Kassem, Andrea Pertoldi, Benjamin Rudin, Florian Emaury, Izzat Darwazeh, Zhixin Liu
https://arxiv.org/abs/2506.05811

Synchronous Clock and RF Carrier Transmission for Radio Access Network Fronthaul
We simultaneously achieve clock synchronisation, clock-synchronised data transmission and ultra-low noise RF carrier generation by combining clock phase caching and frequency comb transmission in radio access networks (RAN). We demonstrate <100fs jitter for 25GHz RF carrier and 2.5GHz clock, and 16-hour 6.6ps RMS wander.

Smallest vertical beam sizes achieved in high-energy accelerators
Rogelio Tomas Garcia, Yukiyoshi Ohnishi, Frank Zimmermann
https://arxiv.org/abs/2506.12361

Smallest vertical beam sizes achieved in high-energy accelerators
FCC-ee aims at colliding electrons and positrons with vertical rms beam sizes between 30 and 50 nm with beam energies extending from about 40 GeV to 182.5 GeV. In this report, we collect experimental results of different high energy accelerator projects with comparable design vertical beam sizes.

A method of numerical calculation of the effect of short-range correlations for a wide range of nuclei
Tianyang Ma, Shalom Shlomo
https://arxiv.org/abs/2506.05512

A method of numerical calculation of the effect of short-range correlations for a wide range of nuclei
We introduce a method to calculate the effect of short-range correlation (SRC) on the proton density distribution numerically, up to the first order of the cluster expansion, that can be used for wide range of closed shell nuclei and determine the effect on proton density, root-mean square (RMS) radius, and form factor of many different closed-shell nuclei: $^4$He, $^{16}$O, $^{28}$Si, $^{32}$S, $^{40}$Ca, $^{60}$Ni, $^{90}$Zr, $^{140}$Ce and $^{208}$Pb. In the short-range correlations, we have…