[Dsg-halla_ecal] ECal heater prototype

[shahinya at jlab.org]

Lead wire 10" to short we need  minimum 2.5-3meter.

Albert
> What do you think about these 2" 400W cartridge heaters? If we agree they
> will work I will order a few.
> https://www.grainger.com/product/TEMPCO-TEMPCO-Swaged-Cartridge-Heater-4NJE8?gucid=N%3AN%3APS%3APaid%3AGGL%3ACSM-2295%3A4P7A1P%3A20501231&gclid=CjwKCAjw9J2iBhBPEiwAErwpeWWdxqefUoInxiMar6kX9q4p0h6Pn1piO0ZSHKPpgsyDArQVjoRFnxoCigMQAvD_BwE&gclsrc=aw.ds
> -Don
>
> Donald Jones
> Hall A/C Staff Scientist
> Jefferson Lab
> Newport News, VA
> ________________________________
> From: Dsg-halla_ecal <dsg-halla_ecal-bounces at jlab.org> on behalf of Donald
> Jones via Dsg-halla_ecal <dsg-halla_ecal at jlab.org>
> Sent: Tuesday, April 25, 2023 10:56 AM
> To: Marc Mcmullen <mcmullen at jlab.org>; dsg-halla_ecal at jlab.org
> <dsg-halla_ecal at jlab.org>; shahinya at jlab.org <shahinya at jlab.org>; Jack
> Segal <segal at jlab.org>
> Subject: Re: [Dsg-halla_ecal] ECal heater prototype
>
> GEnRP starts end of January. However, I would prefer to get this into Hall
> C asap.
> -Don
>
> Donald Jones
> Hall A/C Staff Scientist
> Jefferson Lab
> Newport News, VA
> ________________________________
> From: Marc Mcmullen <mcmullen at jlab.org>
> Sent: Tuesday, April 25, 2023 10:54 AM
> To: Donald Jones <jonesdc at jlab.org>; dsg-halla_ecal at jlab.org
> <dsg-halla_ecal at jlab.org>; shahinya at jlab.org <shahinya at jlab.org>; Jack
> Segal <segal at jlab.org>
> Subject: Re: ECal heater prototype
>
> Hi Don,
>
> Thanks for the update from the ERR.  DSG will review this information and
> pass along any feedback concerning the heater controls.
>
> Just for a time reference. What is the planned start date for GEnRP?
>
> Additionally, we can start testing the controls after the channels have
> been segmented as previously described. Please let me know when this has
> been completed.
>
> I will plan a zoom meeting for later this week to go over the controls
> software.
>
> Marc
> ________________________________
> From: Dsg-halla_ecal <dsg-halla_ecal-bounces at jlab.org> on behalf of Donald
> Jones via Dsg-halla_ecal <dsg-halla_ecal at jlab.org>
> Sent: Tuesday, April 25, 2023 10:31 AM
> To: dsg-halla_ecal at jlab.org <dsg-halla_ecal at jlab.org>; shahinya at jlab.org
> <shahinya at jlab.org>; Jack Segal <segal at jlab.org>
> Subject: [Dsg-halla_ecal] ECal heater prototype
>
> Hi Marc and Albert,
> The ERR panel yesterday determined that we have to demonstrate the use of
> a prototype detector with our mature heater system in real beam
> conditions. Bogdan's suggestion is that we use our 6 supermodule prototype
> which we can place in the beam either in Hall C or in Hall A during GEnRP.
> To fulfill their requirements we will have to have a full temperature
> control system as well as signal readout for at least one supermodule.
> What does this mean? Once the initial demonstration of Marc's control
> system concludes (this week?) we need to
>
>   *   Instrument the prototype for full readout of all temperatures
>   *   Implement temperature controls of the heaters along with shutoffs on
> high temperature (Marc may already have this completed?)
>   *   Install new 300W strip heaters capable of reaching our required
> power at 50VDC
>   *   Purchase cartridge heaters for the side aluminum bars (at least 50%
> of them) and drill the bars to hold them. This is an essential part of
> the finished ECal heater system, so we need to demonstrate that it
> works.
>   *   Purchase adjustable voltage power supplies to drive and control the
> power output. I have purchased a single 480W 10A LED driver that should
> be able to supply up to 5 supermodules with adjustable voltage.
> (https://www.digikey.com/en/products/detail/mean-well-usa-inc/HLG-480H-48B/7704122?s=N4IgTCBcDaIIwA4BsSC0YCsGyoHIBEQBdAXyA)
> Marc, when this arrives I will give it to you to see if it is going to
> work. It requires an adjustable 0-10V input to adjust the output between
> 0 and 48 VDC.
>   *   Install the whole setup and test in Physics storage.
>   *   Install in the Hall. This will require putting it on a table up near
> beam height. I think we should improve the prototype design by
> installing a full frame/box around it to make it safe to move as a unit.
>
> Just wanted to get you thinking about this.
> -Don
>
>   *
>
> Donald Jones
> Hall A/C Staff Scientist
> Jefferson Lab
> Newport News, VA
>
>
>