13th Geant4 Space Users Workshop

Session

Space missions - instruments and detectors

Nov 28, 2018, 11:15 AM

Conveners

Space missions - instruments and detectors

• Ana Firan (NASA/JSC)

Space missions - instruments and detectors

• Masanobu Ozaki (JAXA)

Space missions - instruments and detectors

• Makoto ASAI (SLAC)

26. Remote sensing of hydrogen near the lunar surface via its effect on cosmic-ray secondary particles

Mark Looper (The Aerospace Corporation)

11/28/18, 11:15 AM

27. Alternatives to a forward Monte Carlo simulation: adjoint and improved sector-shielding techniques in Geant4

Mark Looper (The Aerospace Corporation)

11/28/18, 11:40 AM

13. Using Geant4 to interpret data from MAVEN's Solar Energetic Particle (SEP) detector.

Patrick Dunn (University of California, Berkeley)

11/28/18, 12:05 PM

Geant4 has been an invaluable tool for understanding the data of MAVEN's Solar Energetic Particle (SEP) instrument. Raw data from SEP consists of two sets of counts across 256 bins. Each bin is essentially a counter corresponding to an event type and energy deposit (to be further explained in the presentation). Simulations were done in Geant4 in order to understand what differential energy...

11. The Dynamic Albedo of Neutrons Experiment on MSL: Geant4 Modeling Results

Audrey Martin (The University of Tennessee )

11/28/18, 1:45 PM

One of the primary goals of The Mars Science Laboratory (MSL) rover is to understand current and historical water abundance on Mars (Grotzinger et al., 2012). A key instrument on MSL for accomplishing this goal is the Dynamic Albedo of Neutrons (DAN; Mitrofanov et al., 2012). The DAN instrument is sensitive to hydrogen (H) from the surface down to roughly 60 cm depth in the regolith. DAN...

4. Test mass charging in the gravitational wave observatory, LISA: confronting simulations with observations

Peter Wass (University of Florida)

11/28/18, 2:10 PM

At the core of the LISA gravitational wave observatory are isolated test masses that act as mirrors for a 2.5 million km baseline interferometer. The test masses must be kept in near pure free-fall: isolated from all unwanted force disturbances above the femto-Newton level. Electrical charging of the test masses produced by cosmic ray impacts gives rise to electrostatic forces that can reduce...

10. Using Geant4 in Space Elevator Research

Dennis Wright (SLAC)

11/28/18, 2:35 PM

The space elevator is a means for moving large amounts of mass into space at relatively low cost. Modern concepts of this structure involve a gravitationally stabilized thin tether made of strong materials such as carbon nanotubes or single-crystal graphene, extending to an altitude of 100,000 km. Along the full length of the tether are many hazards, such as space debris, solar storms,...

32. Uses of GEANT4 within the Space Radiation Analysis Group (SRAG)

Dr Ryan Rios

11/30/18, 11:15 AM

In view of manned missions targeted to the Moon and Mars, for which radiation exposure is one of the greatest challenges, it is of fundamental importance to have tools, which allows the determination of the particle flux and spectra at any time during the mission from transit trajectory to planetary surface operations.
The environment at the surface is, apart from occasional solar energetic...

30. Hitomi-related Geant4 activities

Masanobu Ozaki (JAXA), Valentina Fioretti (INAF/IASF Bologna)

11/30/18, 11:40 AM

1. Workshop closing

Makoto ASAI (SLAC)

11/30/18, 12:20 PM

12. Geant4 simulation of the HITOMI/SXS instrumental background

Valentina Fioretti (INAF/IASF Bologna)

The HITOMI Soft X-ray Spectrometer (SXS), despite its short life, provided more than 300 ks of Non X-ray Background (NXB) data in Low Earth Orbit (LEO) and a unique opportunity for validating the Geant4 simulation of an X-ray micro-calorimeter background against in-flight real data. All future X-ray missions carrying x-ray micro-calorimeters (e.g. ATHENA, XRISM) will certainly benefit from the...

31. t.b.c.

Dr Ana Firan (NASA/JSC)