Blaise Jeanneret

Learn More
—This paper describes a Josephson-voltage-standard-locked synthesizer where a commercial digital-to-analog converter is used as a sine wave generator. The output amplitude of the generator is controlled by the calculable fundamental of the stepwise waveform generated by a SINIS Josephson junction array. Such a system combines the versatility of a commercial(More)
Beam-gas nuclear and Coulomb interactions introduce limitations on the tolerable vacuum pressure in the LHC and its upgrade. We discuss local pressure limits set by the heat load on the cryogenics system and by loss-induced quenches, as well as average pressure limits imposed by beam-lifetime degradation and emittance blow up. These pressure limits depend(More)