In order to enable an iCal export link, your account needs to have an API key created. This key enables other applications to access data from within Indico even when you are neither using nor logged into the Indico system yourself with the link provided. Once created, you can manage your key at any time by going to 'My Profile' and looking under the tab entitled 'HTTP API'. Further information about HTTP API keys can be found in the Indico documentation.
Additionally to having an API key associated with your account, exporting private event information requires the usage of a persistent signature. This enables API URLs which do not expire after a few minutes so while the setting is active, anyone in possession of the link provided can access the information. Due to this, it is extremely important that you keep these links private and for your use only. If you think someone else may have acquired access to a link using this key in the future, you must immediately create a new key pair on the 'My Profile' page under the 'HTTP API' and update the iCalendar links afterwards.
Permanent link for public information only:
Permanent link for all public and protected information:
(National Institute of Materials Physics, Dept. Magnetism and Superconductivity)
Aula Seminari (LNF INFN)
Via Enrico Fermi, 40
We present the effect of tritium upload on superconductivity of different class of materials: a) Ta, a type I superconductor; b) Nb, a type II low temperature superconductor and c) MgB2 an intermediate temperature superconductor. Superconductivity is rather robust in all materials after tritium upload. However, some differences are notable.
The critical temperature,Tc, a basic property does not change in the case of Nb at low field, decreases slightly in case of Ta, but has a very interesting behavior in the case of the MgB2. It slowly changes in time but is independent on the duration of tritium uptake. Immediately after tritiation, Tc shows a slight increase to 39.1 K but decreases to the critical temperature of the untritiated (pristine) sample, Tc = 38.8 K, after 370 days.
The magnetic properties are also different: the tritium loaded Nb shows a higher remanent magnetization which we attribute to the subsurface accumulation of defects, but the high field irreversible magnetization, hence, the critical current density, is smaller than for the bare sample. In the case of Ta, both the remanent magnetization and the irreversible magnetization are slightly reduced after tritiation. In the case of MgB2, the critical current density is strongly dependent on the tritium upload time, mainly at high magnetic fields.
The underlying physics is discussed.