Re: final getter (fwd)

[Marat Vznuzdaev <marat@mail.pnpi.spb.ru>]

Dear Peter,

Thank you, I had really nice but little bit busy summer.
I'm going to be in PSI at 6.09 evening. Peter Kravtsov will be there one 
day before.
Thus, we'll start to prepare CHUPS immediately.
Unfortunately, Sasha is very busy in Juelich and cannot be in PSI till 
the November, 1.
 From my point of view, NuPure 00600-VCR-H2-DRY-PF model is good enough 
for our situation.
I believe 100 ppb level is not the best result for CHUPS, but I cannot 
be completely sure. It's reasonable
idea to have an additional cleaning device (if we have got enough money 
for it). In any case, we can use one
for calibration hymidity sensor.
If you'll purchaise the filter, we'll install one as soon as possible.

Regards,

Marat.

Peter Kammel wrote:

> Dear Marat,
>
> I hope you had a nice summer. Do you know when Sacha
> is coming back? It would be nice to purchase the filter
> in time, so that you can start using it right away at
> PSI.
>
> Regards
>
> Peter
>
> ---------- Forwarded message ----------
> Date: Fri, 19 Aug 2005 11:02:41 -0500 (CDT)
> From: Peter Kammel <kammel@one.npl.uiuc.edu>
> To: A. Vasilyev <vassilie@mail.pnpi.spb.ru>
> Cc: Marat Vznuzdaev <marat@mail.pnpi.spb.ru>, Peter Kravtsov 
> <pkravt@gmail.com>,
>     Claude Petitjean <Claude.Petitjean@psi.ch>,
>     Alexei Vorobyov <vorobyov@pnpi.spb.ru>,
>     Malte Hildebrandt <malte.hildebrandt@psi.ch>,
>     Berhard Lauss <lauss@socrates.Berkeley.EDU>,
>     Semenchuk Gennadii <semench@hep486.pnpi.spb.ru>
> Subject: Re: final getter
>
> Dear Sacha,
>
> I have collected the quotes I received for the getters
> in the elog http://kaon.physics.berkeley.edu:8080/run9-prep/46
>
> I think it is important to have such a getter
>    - for testing and calibrating our PURA moisture sensor.
>    - for trying as hard as we can to really reach the design goal
>      of CHUPS (<10 ppb).
> If this is successful we might not need a CHUPS upgrade towards
> higher flux.
>
> Thus I am willing to purchase one. Please consider the price
> as well as other factors with your team and make a recommendation.
>
> With best regards
>
> Peter
>
>
>
> On Thu, 28 Jul 2005, A. Vasilyev wrote:
>
>> Dear Peter,
>>
>> Tuesday, July 26, 2005, 5:55:48 AM, you wrote:
>>
>> PK> Dear friends,
>>
>> PK> As discussed we should consider putting a filter immediately
>> PK> before the TPC input, if the connecting pipes are really the
>> PK> source of ~100ppb moisture.
>>
>> PK> I looked at the websites of some companies and would ask for
>> PK> quotations including delivery time if you find some getters
>> PK> useful. Please advise.
>>
>> PK> http://www.puregastechnologies.com/microt.htm
>> PK> http://www.nupure.com/Pages/PF_Series.htm
>> PK> http://www.mykrolis.com/catalogue.nsf/docs/M1078
>> PK> http://www.vici.com/matsen/matsen.pdf
>>
>>
>> PK> Best regards from hot Illinois
>>
>> PK> Peter
>>
>> Using the filter immediately before TPC is a good idea. In any case we
>> planed to use mechanical filter there.   And (for example NuPure)
>> these filters works as a mechanical filter better then 3 nm.
>>
>> We can not say now we really have 100 ppb or we simply did not dry the
>> humidity sensor.
>> If in the serious experiment "in dubio non pro reo" (the doubt is 
>> interpreted not in
>> favour of accused) and it will be better to install this filter.
>>
>> More or less clear the situation with humidify sensor will be clear at
>> the end of September.
>>
>> Pressure drop is reasonable. At our fluxes it is not more then 3-4 psi.
>>
>> NuPure is more attractive (from my point of view).   For the better
>> understanding of the situation can we understand:
>> 1. what is the price for hydrogen Nupure model  1000 PF  and 2000 PF?
>> 2. delivery time....
>>
>> 3. pressure drop for these models at 10 bar of hydrogen and 5 slpm
>> flux?
>> 4. I did not understand about N2 purification. It is optional and (as
>> I understood not at room temperature). Can we clarify situation with
>> N2?
>>
>> With best regards   Sasha.
>>
>>
>>
>> -- 
>> Best regards,
>> A.                            mailto:vassilie@mail.pnpi.spb.ru
>>
>
> Peter Kammel  /  pkammel@uiuc.edu
> Department of Physics, Loomis Laboratory
> University of Illinois at Urbana-Champaign
> 1110 West Green Street, Urbana, IL 61801
> Tel (217) 333-5424 / Fax (217) 333-1215