Cell/tissue biopreservation has broad public health and socio-economic impact affecting millions of lives. Cryopreservation technologies provide an efficient way to preserve cells and tissues targeting the clinic for applications including reproductive medicine and organ transplantation. Among these technologies, vitrification has displayed significant improvement in post-thaw cell viability an...

We present two different techniques for achieving low resistance (<20 n $$\Omega $$ ) contacts between copper and aluminium at cryogenic temperatures. The best method is based on gold plating of the surfaces in an e-beam evaporator immediately after Ar plasma etching same apparatus, yielding resistances as 3 that are stable over time. second approach involves inserting indium Al/Cu joint. For b...

We present a concept for a medium scale satellite mission to measurement the Bmode polarization in the CMB at large angular scales. The idea is to close pack a multifrequency array of ∼1500 corrugated feeds to make a “feed farm”. The majority point along the spin axis of the satellite. The primary modulation is obtained by spinning the satellite. Thus, in any instant the polarization in one dir...

With the continuing improvement of properties of High Tc Superconductors (HTS), their application to accelerator technology is becoming increasingly attractive. While the medium to long-term goal for their use in this field will be for high field magnets, the materials now available enable a number of specific applications which benefit from their characteristics and make them a valid alternati...

The reliability level for a nuclear installation is given in generally by the technological process quality of operation and maintenance and in particular by a lot of technical, technological, economic and human factors. The maintenance role is fundamental for a nuclear installation. In the maintenance activity as in any dynamic area, appear continuously new elements which, sometimes, require n...

For high end heat exchanging applications in cryogenics and space application, compactness and effectiveness are the key factors which determine the performance of heat exchanger. Matrix heat exchanger with perforated plate heat surfaces has both criterions to suit into these applications. High thermal conductivity plate and low thermal conductivity spacers are stacked together to obtain low lo...

We analyze feasibility and cost of a superferric magnet design for the PS2. Specifically, we provide the conceptual design of dipole and quadrupoles, including considerations on cryogenics and powering. The magnets have warm iron yoke, and cryostated superconducting coils embedded in the magnet, which reduces AC loss at cryogenic temperature. The superconductor has large operating margin to end...

This pathway describes the development of a Continuous Adiabatic Demagnetization Refrigerator (CADR) within NASA’s Goddard Space Flight Center’s (GSFC, or Goddard) cryogenics and fluids branch. After more than a decade of concerted development efforts, the team is still awaiting a mission opportunity on which to fly the full system. Like the traditional ADR, the CADR will maintain spacecraft in...