Category: Physics Group Meeting Minutes
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31 August 2011
31 August 2011 1. Technical news: · MINIBALL attempted Coulex on 30Na, which is known to be a challenging beam. The yield turned out to be an order of magnitude lower than the expected 104 ions/uC. The representative of the target group noted that in cases of very short half lives (t1/2, 30Na=48ms), comparable or
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24 August 2011
24 August 2011 1. Technical news and physics outcome: · Technical problems with the REX nine-gap rf amplifier compromised the run on 72Kr at MINIBALL. Operation was recovered after intense work also during the weekend, which is highly appreciated. The specialists from the supplier company concluded that the problem is caused by the need of
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17 August 2011
17 August 2011 In the absence of YB, MK, and DY, the meeting was chaired by JP and the minutes taken by TEC. 1. News from the technical group: • GPS provided beam to ISOLTRAP from a UCx target to study n-‐rich Fr. Successful run with 5 new masses and a new isotope discovered. Half-‐life
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10 August 2011
10 August 2011 1. Technical news: • After HRS HV-‐supply broke the week before and the first spare did not work, we use a 2nd spare (never used at ISOLDE before), ASTEC3 that is limited to 40kV. A few problems during IS477 that could not be solved by users including one intervention to HT room.
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3 August 2011
3 August 2011 1. Technical news: · The robot for handling the GPS targets had to be restarted on Monday after not responding to any commands. · The target heating on GPS was recovered after a PLC problem. The target installed is a standard UC target, to be used for laser spectroscopy on the n-rich
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27 July 2011
27 July 2011 1. Technical news: · There have been difficulties with beam transmission after mass-changes at GPS discovered by the users at LA1 and ISOLTRAP. It appears that the problem is related to the Tesla meter. The engineers are looking for a replacement identical with the Tesla meter used at HRS. · A fan
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20 July 2011
20 July 2011 1. Technical news: · Many thanks again for the technical support of the MINIBALL experiments, whose beams had to be prepared in a limited time due to the unforeseen power cut last week. · There was an intervention on Monday concerned with the cooling-water system of the target stations. Similar problems seem
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13 July 2011
13 July 2011 1. Technical news: · Due to delays in target part delivery an old UC was used last week at GLM, but the performance was very good and very pure Ag beams were delivered. · The Sunday thunderstorm was the reason for an unforeseen CERN-wide power cut, which interrupted the GPS experiments 1
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11 July 2012
11 July 2012 There were no comments to the minutes from 4.7.2012. Main Technical News: REX/RILIS: Other Technical News: Physics/Schedule: Safety: AOB: Presentation: -There was a presentation by Sofia Quaglioni on “Ab initio calculations of light-ion fusion reactions ”. – Next week there will be a presentation by Daisuke Suzuki on “Active gas target project
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29 June 2011
29 June 2011 1. Technical news: · The robot handling the GPS targets is now repaired. The spare part arrived within 2 weeks instead of the initial estimate of 6. It was delivered today (Wed) and immediately installed. Currently the robot is being calibrated to the grid of target positions. The target change on GPS