Difference: StatuS900 (27 vs. 28)

Revision 2802 Sep 2009 - Main.DavidCowburn

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  10 Jun 2026 Contents:

900 spectrometers at NYSBC

Warning: Can't find topic StatuS900num2

Status of 900_1 900 Magnet MHz NMR system at NYSBC: Updated 1/1/06

STATUS: in production
  • Cryoprobe : testing complete and released for production use. There are still some issues about shim stability, however, we have a temporary work-around so that multiple-day experiments are practical.

The magnet is at field at 900.27 MHz, and is cryoshimmed. It is stable. Various console issues are being pursued.

DATE COMMENT
For previous closed issues, see earlier versions of this page
Sept. 2 Open Issue: Line shape stability test is not yet met. For this test the lineshape is monitored in an un-locked state. As this is followed a drift in Z1 is monitored. With autoshim on the drift in Z1 can be corrected during the experiment. Bruker has been contacted about this issue and we are working with them to resolve it.
Sept. 2 Open Issue: Autoshim has a random failure when used with gradient experiment. This issue is linke to the issue above, as autoshim is required to maintain Z1. Again we have contacted Bruker to resolve this issue.
051001 Open Issue: Discussion with B-BIO-CH about the limitations of power in the 900 cryoprobe
900 Magnet
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META FILEATTACHMENT attr="" autoattached="1" comment="Schett message confirming shipment" date="1144161380" name="900MHzCryoProbeDelivery.msg" path="900MHzCryoProbeDelivery.msg" size="26112" user="DavidCowburn" version="1.1"
META FILEATTACHMENT attr="" autoattached="1" comment="confirmation of Late Oct deliver " date="1144161380" name="Updateon900US2delivery.txt" path="Updateon900US2delivery.txt" size="448" user="DavidCowburn" version="1.1"
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META FILEATTACHMENT attr="" autoattached="1" comment="Schett message confirming shipment" date="1144161380" name="900MHzCryoProbeDelivery.msg" path="900MHzCryoProbeDelivery.msg" size="26112" user="Main.DavidCowburn" version="1.1"
META FILEATTACHMENT attr="" autoattached="1" comment="confirmation of Late Oct deliver " date="1144161380" name="Updateon900US2delivery.txt" path="Updateon900US2delivery.txt" size="448" user="Main.DavidCowburn" version="1.1"
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META TOPICMOVED by="DavidCowburn" date="1251901511" from="Main.StatuS900" to="Staffarchive.StatuS900"
 
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