| Status |
ExpNbr |
Date |
Author |
Type |
Category |
Target-Source |
Subject |
| Fixed | e793s |
Sun Mar 14 10:01:36 2021 |
Juan Lois & faïrouz & Adrien | BEAM | Hardware | CD2 | Beam intensity escalated up to 1.6e6 pps |
At 9:57 the intensity increased up to 1.6e6 pps and we had to call the pcp to put it again to the normal values.
It was solved by 10:07 .
Same incidence happend at 10:17 and then again at 10h30.
The beam operators close little bit the slits to decrease the beam intensity.
The intensity is now 3.e5 pps |
| Fixed | e793s |
Sun Mar 14 11:06:07 2021 |
Faïrouz, Juan Lois | BEAM | General | CD2 | Slits open again. Beam intensity ~4.8e5 pps |
|
| Fixed | e793s |
Sun Mar 14 12:02:10 2021 |
Faïrouz, Juan Lois | RUN | General | CD2 | run62 screenshots at 11h57 (14/03/2021) |
|
| Fixed | e793s |
Sun Mar 14 14:26:29 2021 |
Faïrouz, Juan Lois | RUN | General | CD2 | Snapshots 14:20 |
|
| Fixed | e793s |
Sun Mar 14 14:52:14 2021 |
Franco | OFFLINE | General | CD2 | Gating above Sn |
|
| Fixed | e793s |
Sun Mar 14 14:57:35 2021 |
Franco | GRIT | General | CD2 | LV & HV of Mugast-MUST2 |
| For future reference... |
| Fixed | e793s |
Sun Mar 14 15:20:47 2021 |
Adrien | OFFLINE | General | CD2 | Updated Angular distribution macro |
The angular distribution macro has been updated and now produce TWOFNR calculation on the fly.
Feel free to add new plots and play around with the parameter.
MakePlot will produce the distribution using Ex and sigmaEx of the state and Eg and sigmaG of the gamma. Efficiency is automatically taken into account using the efficiency provided by manu.
FIT will perform the TWOFNR calculation using The energy of the state, l and j of the transferred nucleon and J of the formed states. Once the calculation done, it does the fit to the data and extract the C2S.
I found the number strangely small so I suspect we do something wrong.
To run it:
Open a terminal
$> lpcgrit
$> npp MUGAST
$> cd e793s
$> root AngDist.C |
| Fixed | e793s |
Sun Mar 14 15:52:36 2021 |
Faïrouz, Juan Lois, Wilton | RUN | General | CD2 | run62 screenshots at 15h52 (14/03/2021) |
|
| Fixed | e793s |
Sun Mar 14 17:16:01 2021 |
Miguel, Wilton, Ablaihan | BEAM | Hardware | CD2 | Beam went down for a couple of minutes at 17:13. Now it is ok, screenshot attached. |
Beam went up to 2x10^6 pps in CATS.
Then it went down to 0 for a couple of minutes at 17:13.
Now it is ok, screenshot attached. |
| Fixed | e793s |
Sun Mar 14 18:13:28 2021 |
Miguel, Wilton, Nishu, Dieter, Ablaihan | RUN | General | CD2 | run62 screenshots at 18h14 |
|
| Fixed | e793s |
Sun Mar 14 20:11:17 2021 |
Miguel, Wilton, Nishu, Dieter, Ablaihan | RUN | General | CD2 | run62 screenshots at 20h00 |
| Beam progressively down from 5 to 4 10^5. Went to PCP, they were losing intensity in the primary beam, from 500 to 400 nA. Working on it (21:30)... |
| Fixed | e793s |
Sun Mar 14 22:01:04 2021 |
Miguel, Wilton, Ablaihan,nishu | RUN | General | CD2 | summary of run 62@22:00hrs |
|
| Pending | e793s |
Mon Mar 15 00:21:18 2021 |
Sarah, Louis, Charlie | BEAM | General | CD2 | Source is running out |
The beam intensity spiked to 9x10^9, so Louis called PCP to ask them to reduce it. He was told that the source was almost depleted, and was presented with two options:
A) Keep pushing the source and run at 5x10^5, but run out completely soon (probably during the night shift)
B) Let the rates slowly drop and open the slits as much as possible, to make the source last longer (perhaps another day). This option is strongly preferred by the PCP team, and is the current plan we are following.
Changing the source would apparently take ~12 hrs. There will be a large meeting of all of the technical staff - including the beam and source experts - tomorrow morning at 09:00, so there may be more information about the best course of action after that.
Wilton was consulted as one of the spokespeople of the experiment, and he approves of this action. |
| Fixed | e793s |
Mon Mar 15 02:08:19 2021 |
mugast | BEAM | General | CD2 | Beam stopped at 2:08 |
| Beam stopped at 2h08. The PCP want to make some measurement on the source to get its statues. Should take about 10 min. |
| Fixed | e793s |
Mon Mar 15 02:44:06 2021 |
Sarah, Louis, Charlie | RUN | General | CD2 | Beam returned at 02:45 and stabilised by PCP |
| The PCP team were not able to learn anything new about the state of the source from their diagnostic tests, but they told us that they have stabilized the beam so there should be less fluctuations. They have also opened the slits to their maximum, which now gives us 5e5 pps. |
| Fixed | e793s |
Mon Mar 15 03:08:18 2021 |
Sarah, Louis, Charlie | RUN | General | CD2 | Run 62 screenshots at 03h00 |
| Note that Vigru crashed and had to be reopened, so the canvases have only been populated with the data since beam returned at 02h45. |
| Fixed | e793s |
Mon Mar 15 03:37:32 2021 |
Louis | OFFLINE | General | CD2 | Ex vs Eg analysis and C2S |
1) Summary of the the Ex vs Eg analysis with all the gamma ray identified highlighted in red. Green line shows the corresponding position of the excited states.
2) C2S extracted from DWBA analysis for the 0.143 (p3/2), 1.130 (p1/2), 1.985 (p1/2) and the 4 MeV (f7/2) states
3) A gamma ray transition is observed from the unbound states of 48K. Interesting is to notice that this 367 keV transition appear only for those states and that no high energy gamma are observed here.
4) usual Analysis plot |
| Fixed | e793s |
Mon Mar 15 04:57:32 2021 |
Sarah, Louis, Charlie | RUN | General | CD2 | run 62 screenshots at 04h50 |
| The beam intensity has been surprisingly high so far, considering the news we were given about the source a few hours ago. It has just taken a dip to ~4.5e5 in the last 10 mins or so. |
| Fixed | e793s |
Mon Mar 15 06:27:54 2021 |
Sarah, Louis, Charlie | BEAM | General | CD2 | Beam lost at 06h25. Returned at 06h30 |
Electrostatic equipment from the source tripped. Should only be a few minutes of interruption.
EDIT:: Beam back after 5 mins. Screenshot attached. |
| Fixed | e793s |
Mon Mar 15 06:59:02 2021 |
Sarah, Louis, Charlie | RUN | General | CD2 | run 62 screenshots at 06h55 |
| Screenshots attached. Note that the fluctuation issues have returned after the "electrostatic trip"(?) but the beam pps remain pretty high. |