I tried scraping with pressurized-air devices in order to verify the beam poistion. All 4 devices that we use do not work reliable (at least when driven "manually" via Device Control).
1) Sometimes they do not reach the set position
2) Sometimes they overshoot the set position but "oscillate" back to finally reach the set value. EVEN with small step like 5mm the drive moves then 15m in and 10 mm back (or even further?)
3) It seems (but difficult to verify to due 2) that position calibration is quite off.

In particular the latter behaviour makes it very difficult to locate the ion beam.  It seems to be possible to set up the particle detector for the primary beam but will make it very difficult if not impossible to set up 208Bi with the secondary beam.

The following value for "scraping" are thus to be taken with a grain of caution.
GE02DD2_G (Part Det behind cooler): beam is destroyd at -25 (at -30 ?)
GE02DS3HG (Scaper in south arc): beam is destrod at -4 
GE01DD1AG (Capture North arc): beam is destroyed at about -30 
GE01DD2IG (Ion North arc): even at "endlage innen" ion beam cannot be touched.

For further tests I try the following automated settings:

IN in in SC7, BP3
GE02DD2_G, GE02DS3HG, GE01DD1AG : -45
GE01DD2IG : 20

OUT in in SC10
GE02DD2_G, GE02DS3HG, GE01DD1AG : -120 
GE01DD2IG : 120
(not fully out)