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Hi Marco,</div>
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It's good to hear that the next RICH sector is still moving along.</div>
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Thursday and Friday next week are holidays for Thanksgiving so we'd be able to have the meeting any time next Monday, Tuesday, or Wednesday except for<br>
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Monday 11:00am - 1:00pm <br>
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Tuesday 11:00am - 1:00pm<br>
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Wednesday 12:00pm - 3:00pm</div>
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Tyler<br>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b> Marco Mirazita <Marco.Mirazita@lnf.infn.it><br>
<b>Sent:</b> Tuesday, November 17, 2020 5:38 AM<br>
<b>To:</b> Tyler Lemon <tlemon@jlab.org><br>
<b>Cc:</b> dsg-hallb_rich@jlab.org <dsg-hallb_rich@jlab.org><br>
<b>Subject:</b> Re: [dsg-hallb_rich] [EXTERNAL] Re: Fwd: N2 bottle for RICH aerogel dryboxes</font>
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<div class="PlainText">Hi Tyler,<br>
despite the problems due to the covid emergency, the construction of the <br>
second RICH module is progressing and we are getting close to several <br>
shipments of material to jlab, not only the aerogel mentioned by Bob.<br>
Therefore I would like to have a meeting with you, the DSG and the other <br>
people involved in the RICH project to discuss how to plan the work for <br>
the next few months.<br>
Would you be available for a meeting next week? If yes I will make a <br>
doodle to fix the date and time.<br>
Thanks,<br>
Marco<br>
<br>
<br>
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Il 2020-11-16 16:45 Tyler Lemon ha scritto:<br>
> Hi Bob,<br>
> <br>
> Thank you for the information.<br>
> <br>
> Tyler<br>
> <br>
> -------------------------<br>
> <br>
> FROM: Bob Miller <rmiller@jlab.org><br>
> SENT: Monday, November 16, 2020 10:43 AM<br>
> TO: Tyler Lemon <tlemon@jlab.org><br>
> SUBJECT: Fwd: [EXTERNAL] Re: Fwd: N2 bottle for RICH aerogel dryboxes<br>
> <br>
> <br>
> Hi Tyler,<br>
> <br>
> Please see Marco's response below. Based on his email, I will leave<br>
> the repairs or purchase to you and I will not design an N2 system at<br>
> this time.<br>
> <br>
> Regards,<br>
> <br>
> Bob<br>
> <br>
> -------- Forwarded Message --------<br>
> <br>
> SUBJECT:<br>
> [EXTERNAL] Re: Fwd: N2 bottle for RICH aerogel dryboxes<br>
> <br>
> DATE:<br>
> Fri, 13 Nov 2020 13:42:22 +0100<br>
> <br>
> FROM:<br>
> Marco Mirazita <Marco.Mirazita@lnf.infn.it><br>
> <br>
> TO:<br>
> Bob Miller <rmiller@jlab.org><br>
> <br>
> CC:<br>
> Marco Contalbrigo <mcontalb@fe.infn.it>, marco mirazita<br>
> <marco.mirazita@lnf.infn.it><br>
> <br>
> Dear Bob,<br>
> let me do a couple of consideration first.<br>
> We have about 40 additional tiles that will be soon shipped to jlab<br>
> and that should be safely stored.<br>
> Then, we still plan to have the second RICH module assembled in the<br>
> second half of 2021, but in the present covid situation I can't be too<br>
> optimistic that this plan could be actually completed. Therefore, we<br>
> must consider the possibility that we will need to have the aerogel<br>
> stored in the cabinets for very long time. In this scenario, purging<br>
> the broken dry boz with nitrogen doesn't seem to me really practical.<br>
> Repairing the broken one (which, from Tyler's picture look to me the<br>
> INFN one, with european power unit) could also not be the best,<br>
> because most likely we will need additional space for the upcoming<br>
> tiles. in the past we borrowed some free space from the large cabinet<br>
> in the EEL-124, but I heard from Tyler that also this cabinet is not<br>
> working.<br>
> So, my suggestion would be to buy a new cabinet, with double capacity<br>
> then the broken one, if possible.<br>
> Alternatively, I would consider to repair the large cabinet rather<br>
> then the small one.<br>
> Best regards,<br>
> Marco<br>
> <br>
> Il 2020-11-12 17:07 Bob Miller ha scritto:<br>
> <br>
>> Hi Marco,<br>
>> <br>
>> Tyler reports that one of the RICH aerogel storage dryboxes failed<br>
>> last week.<br>
>> <br>
>> Do you want to purge the box with N2 as suggested below, or have<br>
>> the<br>
>> storage box repaired or replaced?<br>
>> <br>
>> Regards,<br>
>> <br>
>> Bob<br>
>> <br>
>> -------- Forwarded Message --------<br>
>> <br>
>> SUBJECT:<br>
>> N2 bottle for RICH aerogel dryboxes<br>
>> <br>
>> DATE:<br>
>> Thu, 12 Nov 2020 09:37:01 -0500<br>
>> <br>
>> FROM:<br>
>> Tyler Lemon <tlemon@jlab.org><br>
>> <br>
>> TO:<br>
>> Bob Miller <rmiller@jlab.org><br>
>> <br>
>> CC:<br>
>> dsg-hallb_rich@jlab.org <dsg-hallb_rich@jlab.org><br>
>> <br>
>> Hello Bob,<br>
>> <br>
>> Last week we had one of the RICH aerogel storage dryboxes fail.<br>
>> Fortunately, we've been able to relocate the aerogel in that drybox<br>
>> into the other two dryboxes. Since we're now storing aerogel at or<br>
>> even above full capacity of the two working dryboxes, if there's a<br>
>> problem with one of those, we would not have anywhere else to move<br>
>> the<br>
>> aerogel.<br>
>> <br>
>> Because of this, could you put together a system with a nitrogen<br>
>> bottle to be able to purge the dryboxes with nitrogen?<br>
>> <br>
>> The set up would be the same as we discussed back in October before<br>
>> the power outage in the EEL. I think all that would be needed is a<br>
>> nitrogen bottle with a regulator, relief valve, local pressure<br>
>> indication, rotameter, and the fittings to run a 1/4" gas line to<br>
>> the<br>
>> boxes. We already have a few feedthroughs that would be used to<br>
>> connect the gas line to the box.<br>
>> <br>
>> At some point we may want to add remote pressure monitoring to the<br>
>> set up (we don't have the sensors available right now but may in<br>
>> the<br>
>> future), so if needed, please include those in the pressure system<br>
>> design.<br>
>> <br>
>> If you have any questions or need any more information, let us<br>
>> know.<br>
>> <br>
>> Thanks,<br>
>> Tyler<br>
> <br>
> <br>
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