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MUST2 SAMURAI_2018 S3-LEB-LPC SUPERNEMO MUGAST EXPAND SCALP GALATRON HiCARI VELO

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Fixed, e768s, Tue Jul 30 01:20:21 2019, Jenn & Franco, BEAM, General, LiF, Beam intensity, profile check and SUMMARY night

In run 158 at around 01:00am PCP took the beam to try to optimize it. We got the beam back after ~15 minutes.

Beam intensity ~1.2e7

Fixed, e768s, Tue Jul 30 04:25:49 2019, Jenn & Franco & Teodora, BEAM, General, LiF, Beam intensity, profile check and SUMMARY night

This is what we were seeing in agata. We think it might be possible we were having a bit of beam implanted somewhere. We called PCP to check.

Fixed, TEST, Tue Jul 30 02:02:24 2019, OttoH.V., OTHER, Hardware, N/A, HVM_SUMMARY

[SIZE=5][COLOR=green][B]*** hvm watcher summary ***[/B] [/COLOR][/SIZE]
[SIZE=2][COLOR=green] [/COLOR] Slot: [COLOR=blue]8 [/COLOR] (A1821H) Channel:[COLOR=blue]1 [/COLOR] Vmon: [COLOR=blue] 0 V [/COLOR] Imon:
[COLOR=blue]0.001 uA[/COLOR] Status: [COLOR=pink]Off[/COLOR]

Fixed, TEST, Tue Jul 30 02:02:23 2019, OttoH.V., OTHER, Hardware, N/A, HVM_SUMMARY

[SIZE=5][COLOR=green][B]*** hvm watcher summary ***[/B] [/COLOR][/SIZE]
[SIZE=2][COLOR=green]+10v/mg [/COLOR] Slot: [COLOR=blue]5 [/COLOR] (A1516B) Channel:[COLOR=blue]5 [/COLOR] Vmon: [COLOR=blue] 10 V [/COLOR] Imon:
[COLOR=blue]0.407 A [/COLOR] Status: [COLOR=green]On[/COLOR]

Ongoing, e768s, Mon Jul 29 22:50:43 2019, Sylvain & Freddy, ONLINE, General, LiF, Screenshots run 158 @ 22h05 19x

Fixed, e768s, Mon Jul 29 22:00:00 2019, Freddy, Sylvain, BEAM, General, LiF, Scaler Evolution run 158

Evolution of scaler during run0158 _ from 19h to 24h00

--> Beam extremely unstable from zero to 10**7 pps (for not more than 5 min).

Fixed, e768s, Mon Jul 29 19:49:19 2019, Freddy, Sylvain, Nicolas, BEAM, General, LiF, Run 158 : Beam profile after beam tuning

Below is the beam profile and the scaler corresponding to the beam after optimisation

Edit : beam intensity is strongly fluctuating : current intensity is 2 10⁶

Fixed, e768s, Mon Jul 29 18:59:51 2019, OttoRun, RUN, General, LiF, Run158

*************************
[SIZE=3][B]Run : 158[/B][/SIZE]
*************************

Fixed, e768s, Mon Jul 29 17:49:18 2019, Freddy, Sylvain, RUN, General, LiF, Beam status

At about 17:15 beam suddenly stopped. PCP operators are investigating the issue.

Fixed, TEST, Mon Jul 29 16:57:06 2019, OttoH.V., OTHER, Hardware, N/A, HVM_SUMMARY

Fixed, e768s, Mon Jul 29 15:58:53 2019, Freddy, Sylvain, BEAM, General, N/A, Beam profile and scaler r156

beam down to 3.4*10^6 pps at 16h00 (or VAMOS 200 pps)

Fixed, e768s, Mon Jul 29 15:20:50 2019, Sylvain Andres, Freddy, Adrien, Franck, BEAM, General, LiF, Beam profile after beam intensity obtimisation

Beam recover at around 15:00 after beam optimisation by PCP

Fixed, e768s, Mon Jul 29 13:46:11 2019, Faļtrouz, Nicolas & Freddy, RUN, General, LiF, Beam intensity increased to 7e6 pps

Fixed, e768s, Mon Jul 29 11:48:13 2019, Faļrouz & Andres & Sylvain, RUN, General, LiF, The beam intensity decreased to 2.4e6 pps due to instabilities in the source

The operators are trying to stabilize the ECR source before trying to optimize the beam