[halla_compton] [EXTERNAL] e-detector QWAD adapater Fwd: FW: Assembly quotation for order W73507AST5

[Alexandre Camsonne]

Electron detector is in place an pumping so no need to worry about that

On Mon, Oct 28, 2019 at 7:51 PM Robert Michaels <rom at jlab.org> wrote:

> If you're waiting for an answer from me, I can't say whether its better or
> faster to do this at JLab.  My opinion is that 2 weeks is ok as long as it
> doesn't prevent us from buttoning up the vacuum by the deadline that Jessie
> and Thia require.   I don't know how much of your work interferes with
> buttoning up vacuum.   Maybe Dave can tell us the deadline (early November,
> right ?), and I am sure we don't want to break vacuum during the Christmas
> break, its too risky.  But if your work is independent of that deadline,
> then 2 weeks seems fine to me.
>
> Dr. Robert Michaels
>
> Staff Scientist, Jefferson Lab
>
> http://userweb.jlab.org/~rom
>
> ------------------------------
> *From:* halla_compton <halla_compton-bounces at jlab.org> on behalf of
> Michael Gericke <Michael.Gericke at umanitoba.ca>
> *Sent:* Monday, October 28, 2019 10:34 AM
> *To:* halla_compton at jlab.org <halla_compton at jlab.org>; Jie Pan <
> Jie.Pan at umanitoba.ca>
> *Subject:* [halla_compton] [EXTERNAL] e-detector QWAD adapater Fwd: FW:
> Assembly quotation for order W73507AST5
>
> Hello,
>
> We have a quote for the adapter boards. The lead time on the boards is 2
> weeks (see Jie's message below).
> The questions that need to be answered are whether we should go ahead with
> making just the boards and
> then putting the components on at JLab, or if we should have them all done
> with one set resistors now and
> change them later as needed. Also, the question as to whether the boards
> can be made faster at JLab, giving
> time to make a test board first, is still open.
>
> Please let us know how we should proceed. Juliette: the cost to the grant
> is around $2k.
>
> Michael
>
> --
> Michael Gericke (Ph.D., Professor)
>
> Physics and Astronomy
> University of Manitoba
> 30A Sifton Road, 213 Allen Bldg.
> Winnipeg, MB R3T 2N2, Canada
>
>
>
> -------- Forwarded Message --------
> Subject: FW: Assembly quotation for order W73507AST5
> Date: Mon, 28 Oct 2019 09:18:19 -0500
> From: Jie Pan <Jie.Pan at umanitoba.ca> <Jie.Pan at umanitoba.ca>
> To: Michael Gericke <mgericke at physics.umanitoba.ca>
> <mgericke at physics.umanitoba.ca>
>
> Hi Michael,
>
>
>
> After a few back and forth on the manufacture files over the weekend, the
> PCB company now gives an quote on PCB and assembly. The total cost is
> ~US$2000 for 20 boards. The parts themselves cost are about $45 per board
> (see the attached BOM, in which the DB50 connector is the most expensive
> part).
>
>
>
> The PCB takes about 2 weeks to make, while the assembly probably depends
> on when we will give them a reply on if we will proceed the making or not.
> Anyway, they are waiting for the reply and we shall make a decision asap.
>
>
>
> For the assembly, we need give the final values of the resistors in the
> BOM. I am not sure about that, though. The resistors determine the signal
> and noise level at the discriminator input, should be detector-dependent.
> We don’t have a JLab thin silicon strip detector here, hence cannot verify
> the values by experiment. We may simply use 100K resistors for now so that
> the manufacture can start quick production, but the resistors might need to
> be replaced in the future at JLab.
>
>
>
> Anyway, please advise me how to proceed. Thanks!
>
>
>
> Jie
>
>
>
> *From: *julia.pcbway <julia at pcbway.com>
> *Sent: *October 28, 2019 5:12 AM
> *To: *Jie Pan <Jie.Pan at umanitoba.ca>
> *Subject: *Assembly quotation for order W73507AST5
>
>
> Hello,
>
> For assembly order W73507AST5, here attached the BOM we quoted,  please
> kindly check and confirm especially those comments in red color showed.
>
> For pcb, there is 0.7mm blind vias, we suggest to update to 0.2mm to make,
> can you accept? If yes, we can update for you.
>
> For surface finish, we suggest to update to immersion gold, because to
> make blind vias, HASL is not good.
>
> Look forward to your early reply to proceed, thank you.
> 2019-10-28
> -----------------------------------
> Best Regards
> *Julia*
>
> Customer Service Executive
> Skype: live:julia_4946 (julia at pcbway.com) | Tel:86-571-85396323
>
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