Notes on MEC Attenuators

The MEC attenuators are controlled by IOC ioc-xrt-mecppatt-ims running ioc/xrt/ims/R2.2.9. The host machine for this ioc is the RHEL5 Supermicro Atom ioc-xrt-mec-mot1 (B960 XRT R04 E39; subnet cds-lfe.pcsdn) which runs four other IOCs:

• ioc-xrt-mec-xfls-ims
• ioc-xrt-mecpims1-ims
• ioc-xrt-m3h-switch
• ioc-mec-pulsepicker-ims

serverStat does not report any additional hardware interfaces beyond ethernet.

Notes from Silke:

• The pulse picker may be complicated: the 3 PP devices in the XRT do share some physical setup.
• As all IOCs on that server are ethernet only, one can decide to move IOCs temporarily if needed (either move the attenuator or the pulse picker).

The database in ioc-xrt-m3h-switch just contains links to other PVs found on the cds-lfe.pcdsn subnet:

• HXX:HXM:MMS01:*
  • IOC: ioc-xrt-hxx-hxm-pim01-ims
  • Host: ioc-xrt-rec01cds-lfe.pcsdn
• CXI:R48:EVR:41:*
  • IOC: ioc-xrt-cxi-picker
  • Hard RTEMS IOC
• HFX:DG2:STP:01:*
  • IOC: ioc-xcs-stoppers
  • Host: ioc-xrt-vacuum
• PATT:SYS0:1:*
  • IOC: ioc-det-evg-fake, ioc-mec-evg-fake

These IOCs make use of a digi and a moxa. Switch swh-lfe-xrt is located at B960 XRT R02 E40 B.

There is the port usage information:

• digi-xrt-mec04
  • Location: ST IDN061
  • switch port used: swh-lfe-xrt:4/1/22, vlan=646 [cds-lfe-pcdsn]
  • Ports 2101-2103: ioc-xrt-mec-xfls-ims
  • Ports 2104-2114: ioc-xrt-mecppatt-ims
  • Port 2115: ioc-mec-pulsepicker-ims
  • Port 2116: ioc-xrt-mecpim1-ims
• moxa-xrt-dg3-01
  • Location: ST XCS DG3 (under) - IDNO 31/32
  • switch port used: swh-lfe-xrt:2/1/11, vlan=646 [cds-lfe.pcdsn]
  • Port 4013: ioc-xrt-mecpims1-ims
  • Ports 4014,4015: ioc-mec-pulsepicker-ims

Current connections plugged into digi-xrt-mec04