Category: Physics Group Meeting Minutes
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11 January 2012
11 January 2012 1. Technical news: · Planned power cuts have occurred in the last weeks. Maintenance of power boxes at ISOLDE was performed before Christmas. · Currently there is no cooling water in the hall. · Cleaning was done in the HT room. Both power supplies have been checked by Jan Schipper. · The
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30 November 2011
30 November 2011 1. Technical news: · Separator courses took place in the beginning of last week. The last day was dedicated to the new users from the ISOLDE “in-house” group. · At the end of the week the RFQ was realigned to improve transmission of laser light. After this the ion-beam transmission was still
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16 November 2011
16 November 2011 1. Technical news: · It was discovered during the WITCH run that changing the heating of the target line (possibly also the target) in a VADIS ion source may cause a change in the plasma potential. This in turn changes the transmission, which can be gained back by tuning the acceleration voltage.
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9 November 2011
9 November 2011 1. Technical news: · At HRS the UC target with a rhenium ionizing cavity for enhanced surface ionization worked very well during last week. · In cases the beams from the above target had to be attenuated for the CRIS experiment using the HRS slits. At one point there was a problem
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2 November 2011
2 November 2011 1. Technical news: · Last Monday, during a target change at GPS, (which until the shutdown involves also the HRS robot placing the target on the HRS shelf), the reference point was damaged. A new calibration point was built and normal operation was restored on Wednesday afternoon, which caused a delay in
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26 October 2011
26 October 2011 1. Technical news · HRS delivered beam successfully to the T-REX experiment. · GPS delivered beam successfully to the Solid State and Bio Physics experiments at GLM. Fluctuations were identified in the Hg beam intensity which could be compensated by adjusting the target heating. There were difficulties in injecting the beam to
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19 October 2011
19 October 2011 In the absence of YB, MK, and DY, the meeting was chaired by TEC and the minutes taken by JP. 1. News from the technical group: · HRS provided neutron-rich Zn beams to ISOLTRAP and LA1 from a UCx target equipped with tungsten neutron converter and quartz line. These isotopes required RILIS.
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12 October 2011
12 October 2011 1. Technical news: · HRS intervention took place last Thursday in order to replace the piston of the HRS cage. The new part still contains plastic parts, susceptible to radiation. New piston is being constructed. · “Day 2” for investigating the ISOLDE beam diagnostics was conducted this week. The issue with an
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5 October 2011
5 October 2011 1. Technical news: · The robots handling the targets lost calibration immediately after the power cut last week. The current hypothesis assumes that this is caused by their battery pack, which does not seem to kick in quickly enough to preserve the calibration. The issue is being investigated. · The HRS cage
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7 September 2011
7 September 2011 1. Technical news: · A number of SSP experiments are taking place at GPS since last week, most of the time in proton sharing mode with other experiments (COLLAPS, MINIBALL). There have been some technical issues as follows: – The target lost heating twice. As reported in the last minutes the first