DIAGNOSTIC BOXES SIX INTER CRYOMODULE COMPACT HIE-ISOLDE DIAGNOSTIC BOXES
2014 | CERN - ADAM/AVO
This system is a set if six Diagnostic Boxes UHV-rated which are part of the HIE ISOLDE LINAc and are placed in the narrow space available in between the superconducting cryomodules. The High Intensity Energy LINAc will have a maximum energy of 10MeV/u.
A “V” shaped slit blocks the beam allowing the pass of just a 1 mm width beam slice along the X and Y directions. A Faraday Cup measures downstream the current of the beam slice ranging from 1pA to 500pA.
The Faraday Cup has an outer bias ring that is set to a negative voltage to avoid secondary emitted electrons escaping the cup.
The transverse profile of the beam can be obtained using together the FC with the slit scanner. This is achieved by sampling the beam current behind the slit scanner with the value of the measured current, recorded as a function of the slit position. Each diagnostic box has 6 different ports for additional devices, 3 of them already in use.
