1. INFN Sez. Milano-Bicocca
Final updates about "Observation of Fine Time Structures in the Cosmic Proton and Helium Fluxes" article. 
Stefano Della Torre
INFN Sez. Milano-Bicocca

2. Analysis & manuscript preparation: Aachen, Perugia​​, KIT
Prepared two parallel articles:
Observation of Fine Time Structures in the Cosmic Proton and Helium Fluxes with the Alpha Magnetic Spectrometer on the International Space Station​
Observation of Complex Time Structures in the Cosmic-Ray Electron and Positron Fluxes with the Alpha Magnetic Spectrometer on the International Space Station
Analysis & manuscript preparation: Hawaii, Milano, Perugia​
Analysis & manuscript preparation: Aachen, Perugia​​, KIT
Article Timeline
 End November 2017, first submission to PRL​
 End December 2017, referee reports: recommended publication after evision​
 January-February 2018, revised version + response documents ​
 March 2018, resubmission goal
23/02/2018
AMS-Italy - S. Della Torre

3. AMS-Italy - S. Della Torre
Fig. SM-1
We shows the detailed behavior of (a) the proton flux and (b) the helium flux as functions of time and of rigidity from 1 to 10 GV and from 2 to 10 GV, respectively. For completeness, Fig. SM-1 shows the entire rigidity range of proton and helium fluxes, along with their total variation from May 2011 to May As seen, both the proton and helium spectra exhibit large variations with time at low rigidities which decrease with increasing rigidity.
 Both fluxes have a minimum in February 2014.
Fig. 1
23/02/2018
AMS-Italy - S. Della Torre

4. AMS-Italy - S. Della Torre
Both the proton and helium fluxes have fine time structures  each with maxima and minima with boundaries marked by the vertical dashed lines from  I to X.
The structures in the proton flux and the helium flux are nearly identical in both  time and relative amplitude with the exception of boundary VI which is a minimum only for  rigidities greater than 5 GV.
Fig. 2
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AMS-Italy - S. Della Torre

5. AMS-Italy - S. Della Torre
I (September 27, 2011), 
II (March 7, 2012), 
III (July 20, 2012), 
IV (May 13, 2013), 
and VII (March 19, 2015),
have also been observed by AMS in the electron flux and the positron flux.
After boundary VII, the amplitude of the structures  are considerably reduced and the proton and helium fluxes steadily rise at all rigidities, also observed in the electron flux and the positron flux.
Fig. 2
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AMS-Italy - S. Della Torre

6. AMS-Italy - S. Della Torre
The data greatly improve the accuracy and the sensitivity of the time dependent proton and helium  measurements
FIG. 3.
(a) the AMS proton flux for [1.19−1.40] GeV,  SOHO/EPHIN for [1.12−1.29] GeV, (b) the AMS helium flux for [1.11−1.28] GeV/n
23/02/2018
AMS-Italy - S. Della Torre

7. AMS-Italy - S. Della Torre
Above 3.29 GV the ratio is time independent. 
Below 3.29 GV the ratio has a longt-term time dependence, the ratio steadly decrease after Feb 28, 2015 ± 45 days
23/02/2018
AMS-Italy - S. Della Torre

8. The change of slope in p/He coincides with the rising phase of spectra
23/02/2018
AMS-Italy - S. Della Torre

9. AMS-Italy - S. Della Torre
From our understanding of cosmic ray transport in the heliosphere, a non-constant p/He flux ratio may be due to several effects:
(1) velocity dependence of the diffusion tensor, that appears at low-rigidity; 
(2) differences in the interstellar spectra; 
(3) He-3 and  He-4 isotopic composition effects arising from (1) and (2). 
See Nicola's Talk
23/02/2018
AMS-Italy - S. Della Torre

10. AMS-Italy - S. Della Torre
Conclusion
The proton flux and the helium flux observed by AMS have fine time  structures nearly identical in both time and relative amplitude. 
The amplitudes of the structures decrease with increasing rigidity and are observed up to 40 GV.
After March 2015, the amplitude of the structures is considerably reduced and the proton and helium fluxes steadily rise at all rigidities.
The p/He flux ratio above ∼3 GV is time independent.
Remarkably, below ∼3 GV the ratio has a long-term time dependence coinciding with the period during which the fluxes start to rise.
23/02/2018
AMS-Italy - S. Della Torre