 Fri Feb 16 18:21:17 2018, Thomas Chillery, Iris arm problems 
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After lunch we were still having problems with the aperture hook, see first attached image highlighting the arm is located in close proximity (but not
touching) the vacuum feedthrough and ribbon cable.
Meanwhile in Edinburgh Peter Black designed and built an additional component of the hook to assist in connecting it between the actuator and |
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Mon Dec 3 12:57:54 2018, Thomas Chillery, Carlo Bruno, Tom Davinson, David Rapagni, Finishing 6.0MeV 7Be 2+ and 7Li 2+ beam runs
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On 26/11/2018:
The accelerator and chamber setup were still operating after the overnight run.
Far S2 bias = -130V, leak I = 1.59uA. Diode bias = -70.1V, leak I = 0.00uA. |
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Mon Dec 3 16:47:40 2018, Thomas Chillery, Carlo Bruno, Lizeth Morales, Finishing 3.0MeV 7Be measurements with CH2 XIX and natC III
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On 27/11/2018:
At 8:40 Far S2 bias = -130.0V, leak I = 1.74uA. Diode bias = -70.1V, leak I = 0.00uA.
Pressures (mBar): |
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Sat Nov 24 15:05:40 2018, Thomas Chillery, Marialuisa Aliotta, Carlo Bruno, Lizeth Morales, FAIR DAQ
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The FAIR DAQ IP address: 192.168.1.90
The data is saved in /Local_Parts/Part0DE/
After each run we should copy the data to the 7Be shift folder: /home/circe/7Be_pp/181122/ |
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Fri Apr 13 15:08:04 2018, Thomas Chillery, Lucio Gialanella, End of shift - lab cleanup
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Date: 07/04/2018
Began dismounting detectors:
All detectors powered off
Closed line and quadrupole valves
Preamp power off
Stopped turbos
Closed |
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Mon Dec 3 18:45:17 2018, Thomas Chillery, Raffaele Buompane, End of beamtime - Module settings
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Diode Ortec 571 Amplifier Settings:
Fine gain: 10 (0.5 ->1.5)
Course gain: 50
Shaping time: 0.5us
BLR AUTO: ON
NEG: ON (Instead
of POS)
OUT: ON (Instead of Delay)
Internal fine gain: 1X
Diode quad TFA settings: |
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Mon Dec 3 19:04:20 2018, Thomas Chillery, Raffaele Buompane, End of beamtime - Items to be shipped back to Edinburgh
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To be shipped back to Edinburgh for repair:
Item
Quantity
ECL - NIM Convertor
2
Quad HV Supply
1
Quad |
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Mon Dec 3 18:55:31 2018, Thomas Chillery, Raffaele Buompane, End of beamtime - Cleanup 8x
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On 29/11/2018:
Dismounted S2 2323-18 (496um), 12um mylar, diode, and diodes 0.9um mylar.
Performed general cleanup of lab. Boxed away cables and other parts. See attached pictures 1, 2, 3, and 4. |
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Tue Mar 6 15:55:04 2018, Thomas Chillery, Raffaele Buompane, End of February 2018 Shifts
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On 23/02/2018:
At the end of the February 2018 shifts the detectors bias settings were:
S2 bias = -130.3V, leak I = 2.42uA |
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Wed Jul 11 15:55:35 2018, Thomas Chillery, Electronics Channel Map
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See attached for Electronics Channel Map spreadsheet.
This is valid for the February 2018 Beamtime; it maps out the Far S2 Strips onto the ADC channels
A map should be produced and updated for each beamtime to ensure S2 Strip -> ADC Channel is correctly documented. |
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Thu Nov 22 11:53:08 2018, Thomas Chillery, Marialuisa Aliotta, Carlo Bruno, Lizeth Morales, DAQ tests with alpha source
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The target ladder is set for position 7 - the double alpha source.
Looking at the FAIR DAQ, for the Far S2 the first RAL amplifier (XV) shows:
Alphas at channel 700
Pulser centroid at channel ~2640, with 9 channel FWHM -> corresponds to 44 keV FWHM at 4.91 keV/channel
The |
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Thu Nov 22 11:34:07 2018, Thomas Chillery, Marialuisa Aliotta, Carlo Bruno, Lizeth Morales, Continuing Electronic Chain Tests
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This morning at 8:35am the pressures read (in mBar):
TPU1 = 2.0e-6
TPU2 = 4.5e-7
TPD1 = 8.1e-7
TPD2 = 7.9e-7
CHUP = 4.7e-7
CHDW = 1.1e-5
The
detectors were biased. Far S2 leak I = 1.54uA, near S2 leak I = 12.53uA. |
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Tue Mar 6 15:29:55 2018, Thomas Chillery, Raffaele Buompane, Collecting S2 Alpha Calibration Spectra at End of February Test Shifts
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On 23/02/2018:
We moved the target ladder to position 7, 5.019mm, with the alpha source facing downsteam.
At 17:17 we started the DAQ for a 15 minute alpha spectrum on the downstream S2. Save name: /Remote_Objs/RData_1/180223172135 |
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Wed Nov 21 08:18:14 2018, Thomas Chillery, Marialuisa Aliotta, Checking Target Ladder Calibration
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On 19/11/2018:
There were three CH2 targets already mounted on the target frame, CH2 III, IV, and a damaged target. We dismounted these.
We noticed these previous target were mounted on the incorrect side of the target ladder, resulting in them being offset upstream from the central |
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Mon Dec 3 15:51:11 2018, Thomas Chillery, Carlo Bruno, Tom Davinson, David Rapagni, Changing far S2 protective mylar foil, preparing for 3.0MeV 7Li and 7Be
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On 26/11/2018, after 6.0MeV 7Be and 7Li beam measurements:
At 11:15:
Far S2 bias = -130.0V, leak I = 1.60uA. Diode bias = -70.1V, leak I = 0.00uA. |
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Tue Dec 4 11:23:29 2018, Thomas Chillery, Chamber Dimensions
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See attached pictures for measurements of the 7Be(p,p) chamber dimensions.
The target ladder center - Far S2 distance = 50 + 95 + 0.85 - (19.22+19.58)/2 = 126.45 mm |
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Thu Apr 12 12:47:04 2018, Thomas Chillery, Raffaele Buompane, Central S2 Alpha Calibration
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Date: 06/04/2018
We connected the analogue signals of RAL X, XII, XIII, and "R" to the 3rd ADC (Module 4)
We connected the analogue signals of RAL "S", "Q", "u", and "w" to the 4th ADC (Module 5) |
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Mon Dec 3 18:15:42 2018, Thomas Chillery, Raffaele Buompane, Calibration with alpha source - no mylar on Far S2
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On 28/11/2018:
At 13:35: Far S2 bias = -130.0V, leak I = 1.55uA. Diode bias = -70.1V, leak I = 0.00uA.
Pressures (mBar): |
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Mon Dec 3 18:30:53 2018, Thomas Chillery, Raffaele Buompane, Calibration with alpha source - 12um mylar on Far S2
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On 28/11/2018:
Mounted 12um mylar in front of far S2 - see attached pictures 1 and 2
In air: Far S2 biased to -130.0V, leak I = 1.61uA. Diode biased to -70.1V, leak I = 0.01uA -> 0.00uA. Rate meter ~ 4500Hz. |
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Mon Dec 3 17:59:48 2018, Thomas Chillery, Raffaele Buompane, Calibration with alpha source - 0.9um mylar on Far S2
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On 28/11/2018:
After pulser walkthrough (see eLog entry #67)
Dismounted targets from ladder - see picture 1 and 2 for upstream and downstream sides respectively |