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Dear Ce+BAF colleagues,</div>
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Due to JLAAC and a short week <b><u>tomorrow's Ce+BAF meeting is cancelled</u></b> - we'll resume next week.</div>
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In the meantime, please consider the "ask" I sent to all of you last week. I'm available to discuss, please reach out if you're having a tough time getting started.</div>
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-Joe</div>
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<div id="divRplyFwdMsg" dir="ltr"><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);"><b>From:</b> Joe Grames<br>
<b>Sent:</b> Thursday, January 11, 2024 3:15 PM<br>
<b>To:</b> peppo@jlab.org <peppo@jlab.org>; Matthew Poelker <poelker@jlab.org>; Md Abdullah Mamun <mamun@jlab.org><br>
<b>Subject:</b> Instruction for your 3-year R&D feedback</span>
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Dear Ce<sup>+</sup>BAF colleagues,</div>
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We're being asked by lab management to estimate the resources (i.e. budget) we would request in order to support
<b><u>positron beams Research & Development</u></b>. As explained at yesterday's working meeting, the goal of this exercise is to write down the objectives, scope and resources to perform R&D
<b><u>over the next 3-years</u></b> (likely this exercise is updated annually).</div>
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A list of possible R&D topics is listed further below, find your favorite(s) and/or add to them!</div>
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What am I asking? </div>
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During the next ~couple weeks, find some quiet time for yourself or with colleagues, to discuss how you imagine your R&D topic(s). In some cases detailed proposals/plans are already developed, and ~all of you are already aligned to specific R&D topics.
To help collect your input please use the attached Word template and Excel templates. Please send me your two docs (for yourself or working teams)
<b><u>before our January 24</u><sup><u>th</u></sup><u> meeting </u></b>(we won't meet next week due to JLAAC).</div>
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In the meantime, I will focus with some of you capture the scope to restore the LERF 10 MeV injector region, for future needed R&D beam studies.</div>
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Kind regards,</div>
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-Joe</div>
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<div style="direction: ltr; margin: 0px;"><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"><b>Electron Injector Topics</b></span><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); font-weight: 400;"></span></div>
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<li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; font-weight: 400; color: rgb(0, 0, 0); direction: ltr;">
<div style="direction: ltr; margin: 0px;"><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); font-weight: 400;">Reducing gas load in electron gun to increase photocathode
lifetime</span></div>
</li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; font-weight: 400; color: rgb(0, 0, 0); direction: ltr;">
<div style="direction: ltr; margin: 0px;"><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); font-weight: 400;">Increasing laser spot size at the photocathode to increase
photocathode lifetime</span></div>
</li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; font-weight: 400; color: rgb(0, 0, 0); direction: ltr;">
<div style="direction: ltr; margin: 0px;"><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); font-weight: 400;">Creating reliable higher voltage connections to inverted
gun geometry</span></div>
</li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; font-weight: 400; color: rgb(0, 0, 0); direction: ltr;">
<div style="direction: ltr; margin: 0px;"><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); font-weight: 400;">Optimizing 10 MeV beam line for milliamp polarized source</span></div>
</li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; font-weight: 400; color: rgb(0, 0, 0); direction: ltr;">
<div style="direction: ltr; margin: 0px;"><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); font-weight: 400;">Optimizing full-energy beam line for delivering >100
kW beam to target</span></div>
</li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; font-weight: 400; color: rgb(0, 0, 0); direction: ltr;">
<div style="direction: ltr; margin: 0px;"><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); font-weight: 400;">Optimizing SRF/RF configuration, energy gain, cryogenic
load, footprint</span></div>
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<div style="direction: ltr; margin: 0px;"><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); font-weight: 400;">Exploring a degrader concept</span></div>
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<div style="direction: ltr; margin: 0px;"><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"><b>Positron Injector Topics</b></span><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); font-weight: 400;"></span></div>
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<li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; font-weight: 400; color: rgb(0, 0, 0); direction: ltr;">
<div style="direction: ltr; margin: 0px;"><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); font-weight: 400;">Developing vacuum integrated rotating cooled high power
target</span></div>
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<div style="direction: ltr; margin: 0px;"><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); font-weight: 400;">Developing capture solenoid(s) for collection and/or
bucking</span></div>
</li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; font-weight: 400; color: rgb(0, 0, 0); direction: ltr;">
<div style="direction: ltr; margin: 0px;"><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); font-weight: 400;">Developing cw-capture cavity</span></div>
</li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; font-weight: 400; color: rgb(0, 0, 0); direction: ltr;">
<div style="direction: ltr; margin: 0px;"><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); font-weight: 400;">Developing radiological design for integrated target,
solenoid, capture systems a.k.a. “e+ source”</span></div>
</li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; font-weight: 400; color: rgb(0, 0, 0); direction: ltr;">
<div style="direction: ltr; margin: 0px;"><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); font-weight: 400;">Developing e+ separation dump area (i.e. photon and
e- dumps), and shielding configuration</span></div>
</li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; font-weight: 400; color: rgb(0, 0, 0); direction: ltr;">
<div style="direction: ltr; margin: 0px;"><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); font-weight: 400;">Optimizing full-energy positron transverse/longitudinal
e+ bunch generation</span></div>
</li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; font-weight: 400; color: rgb(0, 0, 0); direction: ltr;">
<div style="direction: ltr; margin: 0px;"><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); font-weight: 400;">Exploring spin rotation design</span></div>
</li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; font-weight: 400; color: rgb(0, 0, 0); direction: ltr;">
<div style="direction: ltr; margin: 0px;"><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); font-weight: 400;">Developing by-pass beam line optics</span></div>
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<div style="direction: ltr; margin: 0px;"><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"><b>12 GeV Ce+BAF Topics</b></span><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); font-weight: 400;"></span></div>
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<li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; font-weight: 400; color: rgb(0, 0, 0); direction: ltr;">
<div style="direction: ltr; margin: 0px;"><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); font-weight: 400;">Optimizing 123 MeV transport and injection beam line</span></div>
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<div style="direction: ltr; margin: 0px;"><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); font-weight: 400;">Studying CEBAF acceptance and optimizing CEBAF for 12
GeV e+</span></div>
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<div style="direction: ltr; margin: 0px;"><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); font-weight: 400;">Exploring hardware upgrade for positron beam delivery
(magnet reversal, diagnostics)</span></div>
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<div style="direction: ltr; margin: 0px;"><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); font-weight: 400;">Exploring radiological design and control of beam power </span></div>
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