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Agenda

Detailed discussion on dipole requirements, coil configurations, cryostat status post-visit, and more for the GSI001 project's development. Requests from FAIR related to dipole usage and design considerations.

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Agenda

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  1. Agenda •  Disegno magnetico 2D.. • End  coils: configurazione, perdite etc • Stato del  criostato dopo a visita di Umberto al GSI • Richieste e discussioni varie da/con FAIR • Stato del programma di sviluppo generale. • Organizzazione del Technical Design Report • .

  2. Il GSI001 riflette quasi tutte le nostre scelte progettuali … ..tranne la chiusura del ferro. A differenza di GSI001 per noi, data la fatica, il ferro ha un limitato ruolo meccanico

  3. Richieste da FAIR Floch: Dear all,we would like to use the dipole that INFN is developpíng in our future string tests. For this, the dipole needs: - a cold diode stack  - quench heaters - 3 pairs of bus bars (one for the dipoles, one for focusinng quad and one for defucusing quad) - one HV feed through withtanding a pin to ground voltage of 3 kV

  4. Date: Tue, 19 Feb 2008 15:27:22 +0100 From: Kaugerts Juris <J.Kaugerts@gsi.de> To: Pasquale Fabbricatore <pasquale.fabbricatore@ge.infn.it> Cc: Xiang Yu <Y.Xiang@gsi.de> Subject: SIS 300 curved dipole yoke hole size for helium recooler Dear Pasquale, We are working on the recooler requirements and geometry. The recooler tube (containing the two phase helium) would be made of OFHC copper or some high thermal conductivity aluminum. Hence, any magnetic field inside this recooler tube region will result in eddy current losses inside the recooler tube. Do you have any calculations of the magnetic field inside this recooler tube region for different hole sizes ? If not, could you send us some realistic ANSYS model so that we could do the calculations ? Regards, Juris

  5. Date: Mon, 18 Feb 2008 14:23:46 +0100 From: Kaugerts Juris <J.Kaugerts@gsi.de> To: Pasquale Fabbricatore <pasquale.fabbricatore@ge.infn.it> Cc: "Moritz Dr. Gebhard" <G.Moritz@gsi.de>, Mueller Hans <H.Mueller@gsi.de>, Kauschke Marion <M.Kauschke@gsi.de>, Xiang Yu <Y.Xiang@gsi.de> Subject: Helium recooler hole size in SIS 300 dipole yoke Dear Pasquale,We have discussed the required size of the holes in the yoke of the curved SIS 300 dipole, in order to get enough helium flow and recooling of the supercritical helium flow by the two phase helium flow inside the recooler tube. I understand from Yu Xiang that you are presently using 60mm holes in the yoke for this purpose (one for the flow, the other for symmetry reasons). According to our calculations, that is too small if the recooler is to be effective enough. A hole size of at least 72 mm is required. Regards, Juris

  6. Date: Mon, 18 Feb 2008 16:11:09 +0100 From: "Moritz Dr. Gebhard" <G.Moritz@gsi.de> To: Pasquale Fabbricatore <pasquale.fabbricatore@ge.infn.it> Cc: Mueller Hans <H.Mueller@gsi.de>, Kauschke Marion <M.Kauschke@gsi.de>, Xiang Yu <Y.Xiang@gsi.de>, Kaugerts Juris <J.Kaugerts@gsi.de> Subject: AW: Helium recooler hole size in SIS 300 dipole yoke Dear Pasquale, we are still working on the subject. It is not so easy. In deed it looks as if 60 mm hole diameter are not enough. However, if 72 mm is the correct value - we will tell you asap. best regards Gebhard

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