Category: Physics Group Meeting Minutes

  • 22 June 2011

    22 June 2011 1. Technical news: · The robot handling the GPS targets developed a problem last week after the target change. It was determined that a spare part will need to be delivered, with the delivery date estimated at 6 weeks. During that time use of the proton beam on GPS would be impossible.

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  • 15 June 2011

    15 June 2011 1. Technical news: · The most serious constraint for experiments on HRS lately was the condition of the RFQ. The exact cause of sparking has been identified after opening and has been fixed. · During the weekend there was a failure of the cooling system of the GPS target station. After efforts

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  • 8 June 2011

    8 June 2011 1. Technical news: · The first MINIBALL experiment for this year was a success. Coulomb excitation was performed on 188,190Pb. The original scientific goals were accomplished and bonus data was collected for 194, 196, 198Pb. · Currently ISOLTRAP is using beam from HRS in order to work with Pb and Tl. There

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  • 25 May 2011

    25 May 2011 1. Technical news and physics and schedule: · The collaboration looking for beta-delayed fission in francium continued last week with laser-ionization studies of astatine (using the same ThC target), performed jointly with the RILIS team. The outcome from the measurements so far is very positive (even 194 and 196At were observed). ·

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  • 18 May 2011

    18 May 2011 1. Technical news: · The test of the LIST (Laser Ion Source and Trap) target on GPS successfully showed suppression of surface ionized species. At the current stage the beam of interest appears to be attenuated by at least an order of magnitude. · Emission channeling experiment at GLM performed measurements with27Mg.

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  • 11 May 2011

    11 May 2011 1. Technical news: · Last week RILIS performed a successful test on Sm ionization. Surface ionization yields 8% efficiency. RILIS effectively doubles that amount. The produced Sm beams are reported to be relatively clean. This was the first ISOLDE run this year and it is a success. · The first radioactive beams

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  • 4 May 2011

    4 May 2011 1. Technical news: GPS: · Tuesday: tuning of protons via BTY line, watchdog tests, proton scan on the SEM-grid target. · Thursday: #443 Ta-W target on. · Friday: Cs mass marker found at 60A and HV sparking even at 40kV – most probably the extraction electrode is polluted with Cs. · Monday:

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  • 27 April 2011

    27 April 2011 1. Technical news: · FE7 (GPS) is fully operational. By itself it holds 60 kV. However, there have been some sparks during the first tests with ion beams – to be investigated next week. · Sm beams were the first stable beams guided through GPS this year. RILIS made use of the

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  • 20 April 2011

    20 April 2011 Minutes by TEC Date 2011-04-20

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  • 14 April 2011

    14 April 2011 1. Technical news: · The cold check has been started. · All beam lines of GPS are under vacuum. HRS will also be pumped soon. · FC auto ranging has been implemented for REX. · FE7 (HRS) has been checked with a test target. · A normal target will be installed at

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