AIDA GELINA BRIKEN nToF CRIB ISOLDE CIRCE nTOFCapture DESPEC DTAS EDI_PSA 179Ta CARME StellarModelling DCF K40
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Message ID: 492     Entry time: Mon Nov 28 13:12:31 2016
Author: PV, AE, Liu 
Subject: Implantation profile in AIDA with 8mm Al replacing 3 mm Pb 

Data for ~3 hrs: Nov 28th, 20:06 to 23:16

Bigrips run 1060 to 1062

AIDA run R30_ 2 to R30_40

Degrader setting: variable= (0.3mmW/1mmAl + 1mmW/1mmAl) + fixed= ( 8 mm Al)

IMPLANT PROFILE: Compare to previous setting (with 3mm Pb as fixed degrader) in elog entry https://elog.ph.ed.ac.uk/AIDA/487

In particular, attachment: https://elog.ph.ed.ac.uk/AIDA/161127_195411/run104x_imp_profile.png

The implantation positin for 40Mg seems to be well optimized (perhaps we can add ~0.5 mm Al to move it further downstream, but not more than that!).

IMPLANT EFFICIENCY: If we compare the number of Al and Mg ions in the ZDS PID for the three runs (~46000, see attachment 5) to the number of ions identified as implants (9389, see attachment 2), we get:

Implant efficiency ~ 20 %   (=9389/46000)

 

P/S: attachment: hit pattern in BRIKEN with F11 plastic (beam), only for BigRIPS run 40Mg1060

 

Attachment 1: 10.png  31 kB  | Hide | Hide all
10.png
Attachment 2: imp_dssd_106x.png  34 kB  Uploaded Mon Nov 28 17:39:05 2016  | Hide | Hide all
imp_dssd_106x.png
Attachment 3: imp_pid_106x.png  43 kB  Uploaded Mon Nov 28 17:39:15 2016  | Hide | Hide all
imp_pid_106x.png
Attachment 4: imp_xy_106x.png  57 kB  Uploaded Mon Nov 28 17:39:21 2016  | Hide | Hide all
imp_xy_106x.png
Attachment 5: pid_r106x.png  28 kB  Uploaded Mon Nov 28 17:49:05 2016  | Hide | Hide all
pid_r106x.png
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