scholarly journals New prospects in fixed target searches for dark forces with the SeaQuest experiment at Fermilab

2016 ◽  
Vol 93 (11) ◽  
Author(s):  
S. Gardner ◽  
R. J. Holt ◽  
A. S. Tadepalli
Keyword(s):  
Author(s):  
Maxim Buzdalov ◽  
Benjamin Doerr ◽  
Carola Doerr ◽  
Dmitry Vinokurov

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ki Hyun Nam ◽  
Jihan Kim ◽  
Yunje Cho

AbstractThe serial crystallography (SX) technique enables the determination of the room-temperature structure of a macromolecule while causing minimal radiation damage, as well as the visualization of the molecular dynamics by time-resolved studies. The fixed-target (FT) scanning approach is one method for SX sample delivery that minimizes sample consumption and minimizes physical damage to crystals during data collection. Settling of the crystals on the sample holder in random orientation is important for complete three dimensional data collection. To increase the random orientation of crystals on the sample holder, we developed a polyimide mesh-based sample holder with irregular crystal mounting holes for FT-SX. The polyimide mesh was fabricated using a picosecond laser. Each hole in the polyimide mesh has irregularly shaped holes because of laser thermal damage, which may cause more crystals to settle at random orientations compared to regular shaped sample holders. A crystal sample was spread onto a polyimide-mesh, and a polyimide film was added to both sides to prevent dehydration. Using this sample holder, FT-SX was performed at synchrotron and determined the room-temperature lysozyme structure at 1.65 Å. The polyimide mesh with irregularly shaped holes will allow for expanded applications in sample delivery for FT-SX experiments.


Foods ◽  
2019 ◽  
Vol 8 (11) ◽  
pp. 534 ◽  
Author(s):  
Line Elgaard ◽  
Line A. Mielby ◽  
Helene Hopfer ◽  
Derek V. Byrne

Feedback on panel performance is traditionally provided by the panel leader, following an evaluation session. However, a novel method for providing immediate feedback to panelists was proposed, the Feedback Calibration Method (FCM). The aim of the current study was to compare the performance of two panels trained by using FCM with two different approaches for ranges calibration, namely self-calibrated and fixed ranges. Both panels were trained using FCM for nine one-hour sessions, followed by a sensory evaluation of five beer samples (in replicates). Results showed no difference in sample positioning in the sensory space by the two panels. Furthermore, the panels’ discriminability was also similar, while the self-calibrated panel had the highest repeatability. The results from the average distance from target and standard deviations showed that the self-calibrated panel had the lowest distance from target and standard deviation throughout all sessions. However, the decrease in average distance from target and standard deviations over training sessions was similar among panels, meaning that the increase in performance was similar. The fact that both panels had a similar increase in performance and yielded similar sensory profiles indicates that the choice of target value calibration method is unimportant. However, the use of self-calibrated ranges could introduce an issue with the progression of the target scores over session, which is why the fixed target ranges should be applied, if available.


Author(s):  
Chia-Yu Hsieh ◽  
Yu-Shiang Lian ◽  
Wen-Chen Chang ◽  
Jen-Chieh Peng ◽  
Stephane Platchkov ◽  
...  

2014 ◽  
Vol 45 (1) ◽  
pp. 336-337 ◽  
Author(s):  
A. Rakotozafindrabe ◽  
M. Anselmino ◽  
R. Arnaldi ◽  
S. J. Brodsky ◽  
V. Chambert ◽  
...  

Author(s):  
M.H. Schub ◽  
T.A. Carey ◽  
R.G. Jeppesen ◽  
M.J. Leitch ◽  
J.C. Peng ◽  
...  
Keyword(s):  

2021 ◽  
Vol 814 ◽  
pp. 136121
Author(s):  
Ya-Ping Xie ◽  
V.P. Gonçalves
Keyword(s):  

2015 ◽  
Vol 2015 ◽  
pp. 1-15 ◽  
Author(s):  
L. Massacrier ◽  
B. Trzeciak ◽  
F. Fleuret ◽  
C. Hadjidakis ◽  
D. Kikola ◽  
...  

Being used in the fixed-target mode, the multi-TeV LHC proton and lead beams allow for studies of heavy-flavour hadroproduction with unprecedented precision at backward rapidities, far negative Feynman-x, using conventional detection techniques. At the nominal LHC energies, quarkonia can be studied in detail inp+p,p+d, andp+Acollisions atsNN≃115 GeV and in Pb +pand Pb +Acollisions atsNN≃72 GeV with luminosities roughly equivalent to that of the collider mode that is up to 20 fb−1 yr−1inp+pandp+dcollisions, up to 0.6 fb−1 yr−1inp+Acollisions, and up to 10 nb−1 yr−1in Pb +Acollisions. In this paper, we assess the feasibility of such studies by performing fast simulations using the performance of a LHCb-like detector.


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