1. 28/01/2013 Gerrit Jan Focker, BE/BI/PM 1 Isolde SGIU Beam Instrumentation Remarks on status and possible development.

2. 28/01/2013 Gerrit Jan Focker, BE/BI/PM 2 Front-end Faraday cups u GPS.FC20 stuck? u New (spare) units are being assembled.

3. 28/01/2013 Gerrit Jan Focker, BE/BI/PM 3 Magnet Room cups u GPS.FC495, HRS.FC300 and HRS.FC490 same basic design, with only one part different. u Normally only ONE spare, u This caused problems in 2012. u A complete spare unit cannot be made due to the (small) differences of the three cups. u Parts have been ordered and will be manufactured to allow to put together a spare unit within one hour.

4. 28/01/2013 Gerrit Jan Focker, BE/BI/PM 4 Controls of Front-End and Magnet Room cups u PAM’s in the Magnet rooms appeared to be very sensitive to single-event upset. u PAM’s moved to the Hall, using “long” cables: degradation of performance. u We will try to split these PAM’s in two parts, keep the control part where it is now and move the Amplifier part to the old position.

5. 28/01/2013 Gerrit Jan Focker, BE/BI/PM 5 Other 25mm cups u Used at Isolde (scanner-units) and at REX. u The cups themselves are always in stock. u Scanner / FC units: u We have a few spares that need to be repaired, u A lists is being prepared of the parts needed to make a few new units and to fill up the stock of spare parts. u No spare pistons for REX, spares will be ordered.

6. 28/01/2013 Gerrit Jan Focker, BE/BI/PM 6 REX special devices REX special devices u REX-Trap collector-plates: u Totally non-standard, no drawings, no end- switches, no visual movement control possible. u One of the two is stuck: u Replace with the other, u Use the broken unit to make a drawing based on “standard” parts and make new units. u EBS.BO10: u NOT standard, maintenance difficult. u ? Drawing ?

7. 28/01/2013 Gerrit Jan Focker, BE/BI/PM 7 Scanner electronics u The scanner-electronics are old, u Due to the installation of more and more scanners there are no more spares (except for the industrial motor-drivers). u The FPGA is obsolete, it’s programming software too, u The limitation of the four control channels complicates the software (and possibly limits the machine operation). u A new solution has been designed and prototype boards are ready (the FPGA needs to be programmed), but development is halted due to other priorities.

8. 28/01/2013 Gerrit Jan Focker, BE/BI/PM 8 Grids u Mechanics: u No spares, u Different connectors everywhere… u Electronics: u Not the most reliable system, (degradation due to radiation?) u Make more spares of actual system? u Make new system based on new PS- complex SEM-grid design?

9. 28/01/2013 Gerrit Jan Focker, BE/BI/PM 9 Conclusions u The BI-ML section is aware of the problems of insufficient spares. Staff changes and lack of manpower don’t help. u Some spares are on the way, others are being prepared. u They will study what is missing and have promised to come up with a proposal what to do about the grid-system later this year. u Tape-station? u FNBS or Alison Scanner(s)?