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<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">Dear ISAC Users,<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">At the ISAC Strategy Workshop in November an idea was floated to modify the ISAC schedule in 2020 to include a block of “backed up” beam time. This would be a contiguous
block of a single target material and ion source combination, using a rotation of two modules on both stations. The duration would be for a few months, within which immediate recovery from module or target failure can be achieved.
<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">The main advantage of this mode of running is that scheduled experiments will not need to be cancelled or shifted significantly in the event of a module or target failure.
In addition, more breathing space is possible for the Remote Handling, Beam Delivery and Target & Ion Source groups to diagnose and repair any failure, resulting in a more careful and measured recovery. The disadvantage of this mode is that the same target
material and ion source will need to be run for the duration of this period, leading to less diversity in the year.
<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">For this mode we are considering Uranium Carbide with surface and laser ionization, with the option of graphite. The sequence of target operation inside the backed up block
closely resembles that which will be required during the ARIEL era, therefore this is a useful practice to establish early on.<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">We have envisaged two possible versions of this schedule, shown in the attached diagrams alongside a “regular” year. The versions would result in up to 35-40% of the total
years’ shifts being backed up for failure, at the cost of only 5-10% of the total shifts compared to a regular year. It would allow 9 or 10 ISAC targets in total to be scheduled. Note that the nature of the two versions requires that certain BNMR blocks are
scheduled at a particular time. <o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">Users should note that the backed up mode would mean that experiments scheduled on Uranium Carbide have a low chance of cancellation due to target module failure, while
all other experiments have the same chance of success as with regular operation.
<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">We wish to solicit the opinion of users immediately. To that end here is a link to a very short survey question that we would be grateful if you could complete by Monday
20th January:<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black"><a href="https://can01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fforms.office.com%2FPages%2FResponsePage.aspx%3Fid%3DEDUFwrOceUai049ELgO1h2WQuVz4bnFBoS0U0OSUAw5UQVhZTzNUMlZIVDhYNlFWSzNNMThRVlVVVS4u&data=02%7C01%7C%7Cf44d477127304971a65408d7991f7942%7Cc20535109cb34679a2d38f442e03b587%7C1%7C0%7C637146232879666308&sdata=sNfwqCk65SY%2F0dCDg4%2FmosFV5kO32bmDcn%2BXvvH0y6M%3D&reserved=0" target="_blank" title="Original URL: https://forms.office.com/Pages/ResponsePage.aspx?id=EDUFwrOceUai049ELgO1h2WQuVz4bnFBoS0U0OSUAw5UQVhZTzNUMlZIVDhYNlFWSzNNMThRVlVVVS4u. Click or tap if you trust this link."><span style="font-size:11.0pt">https://forms.office.com/Pages/ResponsePage.aspx?id=EDUFwrOceUai049ELgO1h2WQuVz4bnFBoS0U0OSUAw5UQVhZTzNUMlZIVDhYNlFWSzNNMThRVlVVVS4u</span></a><o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">Thanks<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">Chris Ruiz and Jens Dilling<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><o:p> </o:p></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">-----------------------------------------<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-family:"HelveticaNeueLT Pro 55 Roman",sans-serif">Allayne McGowan</span></b><b><span style="font-family:"HelveticaNeueLT Pro 55 Roman",sans-serif"><o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"HelveticaNeueLT Pro 55 Roman",sans-serif">Administrative Assistant – Physical Sciences Division<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"HelveticaNeueLT Pro 55 Roman",sans-serif">t 604-222-7438<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"HelveticaNeueLT Pro 55 Roman",sans-serif"><a href="mailto:amcgowan@triumf.ca"><span style="color:#0563C1">amcgowan@triumf.ca</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"HelveticaNeueLT Pro 55 Roman",sans-serif"><a href="mailto:sciencediv@triumf.ca"><span style="color:#0563C1">sciencediv@triumf.ca</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"HelveticaNeueLT Pro 55 Roman",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"HelveticaNeueLT Pro 55 Roman",sans-serif;color:#00B0F0">TRIUMF</span></b><span style="font-size:10.0pt;font-family:"HelveticaNeueLT Pro 55 Roman",sans-serif;color:#00B0F0"> Canada’s particle
accelerator centre<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"HelveticaNeueLT Pro 55 Roman",sans-serif"><a href="http://www.triumf.ca"><span style="color:#0563C1">www.triumf.ca</span></a> @TRIUMFLab<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"HelveticaNeueLT Pro 55 Roman",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"HelveticaNeueLT Pro 55 Roman",sans-serif">4004 Wesbrook Mall<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"HelveticaNeueLT Pro 55 Roman",sans-serif">Vancouver, BC V6T 2A3<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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