128/01/2013 Gerrit Jan Focker, BE/BI/PM

Isolde SGIUBeam Instrumentation

Remarks on status and possible development.

228/01/2013 Gerrit Jan Focker, BE/BI/PM

Front-end Faraday cups

GPS.FC20 stuck? New (spare) units are

being assembled.

328/01/2013 Gerrit Jan Focker, BE/BI/PM

Magnet Room cups

GPS.FC495, HRS.FC300 and HRS.FC490 same basic design, with only one part different.

Normally only ONE spare, This caused problems in 2012.

A complete spare unit cannot be made due to the (small) differences of the three cups. Parts have been ordered and will be

manufactured to allow to put together a spare unit within one hour.

428/01/2013 Gerrit Jan Focker, BE/BI/PM

Controls of Front-End and Magnet Room cups

PAM’s in the Magnet rooms appeared to be very sensitive to single-event upset. PAM’s moved to the Hall, using “long” cables:

degradation of performance. 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.

528/01/2013 Gerrit Jan Focker, BE/BI/PM

Other 25mm cups Used at Isolde (scanner-units) and at REX. The cups themselves are always in stock.

Scanner / FC units: We have a few spares that need to be repaired, A lists is being prepared of the parts needed to

make a few new units and to fill up the stock of spare parts.

No spare pistons for REX, spares will be ordered.

628/01/2013 Gerrit Jan Focker, BE/BI/PM

REX special devices

REX-Trap collector-plates: Totally non-standard, no drawings, no end-

switches, no visual movement control possible. One of the two is stuck:

Replace with the other, Use the broken unit to make a drawing based on

“standard” parts and make new units. EBS.BO10:

NOT standard, maintenance difficult. ? Drawing ?

728/01/2013 Gerrit Jan Focker, BE/BI/PM

Scanner electronics The scanner-electronics are old,

Due to the installation of more and more scanners there are no more spares (except for the industrial motor-drivers).

The FPGA is obsolete, it’s programming software too, The limitation of the four control channels complicates the

software (and possibly limits the machine operation). 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.

828/01/2013 Gerrit Jan Focker, BE/BI/PM

Grids Mechanics:

No spares, Different connectors everywhere…

Electronics: Not the most reliable system,

(degradation due to radiation?) Make more spares of actual system? Make new system based on new PS-

complex SEM-grid design?

928/01/2013 Gerrit Jan Focker, BE/BI/PM

Conclusions

The BI-ML section is aware of the problems of insufficient spares. Staff changes and lack of manpower don’t help. Some spares are on the way, others are being

prepared. 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.

Tape-station? FNBS or Alison Scanner(s)?