 Mon Dec 3 12:32:54 2018, Thomas Chillery, Carlo Bruno, Tom Davinson, Lucio Gialanella, Raffaele Buompane, 6.0MeV 7Be on CH2 XVIII 
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On 25/11/2018:
The beam was tuned for 6.0MeV 7Be 2+
Using 10mm aperture FCC = 12 pA |
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Mon Dec 3 11:54:55 2018, Thomas Chillery, Carlo Bruno, Tom Davinson, Raffaele Buompane, 7Li 6.0 MeV on CH2 XVI and XVIII, and on natC III
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On 25/11/2018:
At 8:45 the pressures read (mBar):
TPU1 = 1.0e-6
TPU2 = 3.2e-7
TPD1 = 6.5e-7
TPD2 = 6.1e-7
CHUP = Sensor Off
CHDW |
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Mon Dec 3 11:28:53 2018, Thomas Chillery, Carlo Bruno, Tom Davinson, Lucio Gialanella, Antonino d'Leva, 7Be 4.0MeV on CH2 XVI and natC III
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On 24/11/2018:
After the short test with 4.0MeV 7Li (see eLog #55) the beam was tuned for 4.0MeV 7Be 2+.
Run # 181124103943 |
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Mon Nov 26 17:13:45 2018, Thomas Chillery, Carlo Bruno, Tom Davinson, Lucio Gialanella, Preparing chamber for 4MeV 7Be 2+ beam
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On 24/11/2018:
At 8:35 the chamber pressures read (mBar):
TPU1 = 2.2
TPU2 = 2.2
TPD1 = 2.2
TPD2 = 2.0
CHUP = Sensor Off
CHDW = No Sensor
The |
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Mon Nov 26 17:10:13 2018, Thomas Chillery, Marialuisa Aliotta, Carlo Bruno, Tom Davinson, Raffaele Buompane, 7Li 4.0 MeV beam on natC target 3
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On 23/11/2018:
After the runs with 7Li on CH2 15, we moved the target ladder to position 5: carbon foil #3 (~590 ug/cm^2)
Run # 181123214406 |
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Sat Nov 24 16:39:22 2018, Thomas Chillery, Marialuisa Aliotta, Carlo Bruno, Tom Davinson, Raffaele Buompane, 7Li 4.0 MeV beam on CH2 target 15
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On 23/11/2018:
Tuned beam for 4.0 MeV 7Li, charge state 2+
Measured transmission of beam through FCC using 3 mm and 10 mm size collimators: 66 pA with 10 mm -> 60 pA with 3 mm -> 91% transmission |
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Sat Nov 24 16:29:10 2018, Thomas Chillery, Marialuisa Aliotta, Carlo Bruno, Tom Davinson, Raffaele Buompane, Preparing setup for 7Li beam
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On 23/11/2018:
10:15 started pumping down chamber with Ecodry 2
RAL thresholds: |
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Sat Nov 24 15:07:00 2018, Thomas Chillery, Marialuisa Aliotta, Carlo Bruno, Lizeth Morales, Tom Davinson, Searching for causes of noise
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On 22/11/2018 in the afternoon:
We increased the ADC thresholds to 40 (previously 8).
For an alpha source with pulser connected, the event multiplicity dropped from ~63 to ~10. Dead time ~ 7% |
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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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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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Wed Nov 21 09:34:26 2018, Thomas Chillery, Marialuisa Aliotta, Carlo Bruno, Setting up chamber both for tests under vacuum and physics measurement
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Today we mounted the far aperture used to control the far iris. No problems were encountered with this.
We mounted the target ladder with the following configuration, see also pictures 1 and 2:
Target #
Target
I
Blank |
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Wed Nov 21 09:28:06 2018, Thomas Chillery, Marialuisa Aliotta, Carlo Bruno, Lizeth Morales, Problem encountered with near iris arm
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On 20/11/2018:
After the electronics tests in air (see eLog entry #44) we started to setup the chamber for vacuum tests with an alpha source.
We started mounting the aperture used for controlling the near iris arm, however we encountered a problem. The iris arm got stuck and could not |
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Wed Nov 21 09:09:41 2018, Thomas Chillery, Marialuisa Aliotta, Carlo Bruno, Lizeth Morales, David Rapagni, Mounting Detectors / Continuing Electronic Chain Tests
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On 20/11/2018:
At 9:00 we walked into the lab, David R reported he found all the pumps OFF. A thunderstorm occurred overnight causing a power outage.
Last night we had switched off the electronics (Preamp power, RAL amp rack, and NIM bin). |
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Wed Nov 21 08:53:06 2018, Thomas Chillery, Marialuisa Aliotta, Carlo Bruno, Lizeth Morales, Testing Electronic Chain - No Detectors
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On 19/11/2018:
During the vacuum test - see eLog entry #43 we performed noise tests on the preamplifiers with no S2 detector connected
First we performed a "tabletop" test - the preamplifiers were not connected to the chamber. |
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Wed Nov 21 08:45:03 2018, Thomas Chillery, Marialuisa Aliotta, Raffaele Buompane, Carlo Bruno, Testing Chamber Vacuum
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On 19/11/2018:
We mounted the following in the chamber:
Iris frames - no S2 detectors or mylar
Si pin diode mount with 0.9um mylar - no diode
Target ladder with blank |
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Wed Nov 21 08:37:24 2018, Thomas Chillery, Marialuisa Aliotta, Raffaele Buompane, Upstream Collimator
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On 19/11/2018:
During the target ladder calibration (see elog entry #41) we also replaced the collimator (thickness ~24mm, diameter 3mm) located immediately
upstream from the target ladder - that is between the upstream and central sections of the chamber. We mounted an aluminium collimator (thickness ~1mm, |
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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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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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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 |