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Beltramin, A.

Paper Title Page
C-07 Upgrade of the Control System for the ALPI Cryogenic Distribution Plant 271
 
  • S. Canella, A. Beltramin, A. Calore, T. Contran, P. Modanese, F. Poletto
    INFN/LNL, Legnaro
 
 

In the LNL Heavy Ion Ac­cel­er­a­tor Com­plex, ALPI is a su­per­con­duct­ing lin­ear ac­cel­er­a­tor (Linac) whose first runs date back to 1993. In more than 15 years the LNL ALPI Linac evolved from an ini­tial small con­fig­u­ra­tion of 5 cryostats and 16 res­onators to the ac­tu­al size of 20 cryostats and 74 res­onators. The su­per­con­duct­ing char­ac­ter of ALPI im­plies the avail­abil­i­ty of a large cryo­genic plant and dis­tri­bu­tion sys­tem to sup­ply the liq­uid he­li­um nec­es­sary to keep the res­onators at 4.2 K. While the Linac struc­ture has grown in the years and, in the mean time, the re­lat­ed cryo­genic plant and dis­tri­bu­tion sys­tems were en­larged and up­grad­ed twice, the re­lat­ed con­trol sys­tem re­mained large­ly un­changed in its main parts and it is now the first sub-sys­tem that ur­gent­ly needs a deep re­new­ing. The chal­lenge to ren­o­vate a work­ing con­trol sys­tem with lim­it­ed shut-downs is the sub­ject of this pre­sen­ta­tion.