[trARPES] METIS: visit of SPECS and SurfaceConcepts, 20.+21.11.

Ralph Ernstorfer ernstorfer at fhi-berlin.mpg.de
Mon Nov 26 15:37:13 CET 2018


Fine with me. I would appreciate if we could fix the time by tomorrow.
Marko, your call.

Cheers,
  Ralph

Am 26.11.2018 um 15:30 schrieb Michael Kallmayer:
>
> Dear Ralph,
>
> thank you for sending the summary. We (SC) propose a telephone
> conference on Thursday, 29th Nov.  between 9:00 a.m. and 12:00 a.m. Is
> this convenient for you ?
>
> Best regards
>
> Michael
>
> Am 26.11.2018 um 08:27 schrieb Ralph Ernstorfer:
>>
>> Michael, Marko, Oleksy,
>>
>> please find a summary of your visit including Tommaso's analysis of
>> the data taken on Wednesday.
>>
>> As SPECS is our legal business partner, I ask for a statement from
>> SPECS either agreeing to the summary or providing specific comments
>> and additions (please use the commenting tools of your pdf viewer) to
>> the summary.
>>
>> I suggest that we have a telephone conference in the second half of
>> this week to discuss the next and hopefully last step for removing
>> the magnetic field distortions. I would also like to discuss the most
>> urgent software issues then.
>>
>> Cheers,
>>   Ralph
>>
>> On 19.11.2018 11:06, Ralph Ernstorfer wrote:
>>>
>>> Dear Oleksy, Marko,
>>>
>>> we need 10 screws M8 x 55 (or slightly longer).
>>>
>>> Regarding the spools: during your visit, we have seen that the
>>> magnetic fields of the spools have an effect on the electron
>>> trajectories. We did not see a clear improvement, though. These
>>> tests, however, were not perfectly systematic as we did not do
>>> energy-dependent measurements for different spool configurations.
>>> With the magnetic fields sensor inside the METIS, we have an
>>> absolute measure of the fields and could try to minimize the fields.
>>> Depending on what we identify as the origin of the magnetic field
>>> distortions, the spools could act as an interim solution for
>>> improving the situation.
>>>
>>> Another thing we had discussed: do you have a spare µ-metal inlay,
>>> which we could potentially test.
>>>
>>> Cheers,
>>>   Ralph
>>>
>>>
>>> Am 19.11.2018 um 10:07 schrieb Support at specs.com:
>>>>
>>>> Dear Ralph,
>>>>
>>>>  
>>>>
>>>> We will bring tomorrow screws, tools for opening the flange and
>>>> demagnetization device. We will discuss if we really need spools
>>>> for this visit. Could you please write me what screws length I
>>>> shall bring? In order to have all screws same length on the flange.
>>>> Thank you.
>>>>
>>>>  
>>>>
>>>> Best Regards,
>>>>
>>>> Oleksiy
>>>>
>>>>  
>>>>
>>>> *SPECS Service and Support*
>>>>
>>>> T +49 30 467 824-94 44
>>>> F +49 30 46 42 083
>>>> E support at specs.com <mailto:support at specs.com>
>>>> SPECS Surface Nano Analysis GmbH
>>>> Voltastrasse 5 13355 Berlin / Germany
>>>> *www.specs.com <http://www.specs.com>*
>>>>
>>>> Innovation in Surface Spectroscopy and Microscopy Systems
>>>> CEO Dr. Ferdinand Bartels
>>>> Registered Office Berlin
>>>> Companies Commercial Register No. 93 HRB 21390
>>>> Register Court Charlottenburg
>>>>
>>>> <http://bit.ly/facebook_specs>  <http://bit.ly/specsyoutube>>>> <http://bit.ly/twitter_specs>  <http://bit.ly/specs_li>
>>>>
>>>> This e-mail contains confidential and/or privileged information. If
>>>> you are not the intended recipient (or have received this e-mail in
>>>> error) please notify the sender immediately and delete this e-mail.
>>>> Any unauthorized copying, disclosure or distribution of the
>>>> material in this e-mail is strictly forbidden.
>>>>
>>>> *From:*Ralph Ernstorfer [mailto:ernstorfer at fhi-berlin.mpg.de]
>>>> *Sent:* Montag, 19. November 2018 09:09
>>>> *To:* trarpes at fhi-lists.de; Sven Kubala; Marko Wietstruk;
>>>> 01_support-INBOX; Michael Kallmayer
>>>> *Subject:* Re: METIS: visit of SPECS and SurfaceConcepts, 20.+21.11.
>>>>
>>>>  
>>>>
>>>> Dear Marko, Oleksy,
>>>>
>>>> can you give us an update regarding potential procedures for
>>>> demagnetization, which you wanted to discuss with SPECS-colleagues?
>>>>
>>>> Can you confirm that you will bring the replacement screws and the
>>>> spools?
>>>>
>>>> Cheers,
>>>>   Ralph
>>>>
>>>>  
>>>>
>>>> Am 13.11.2018 um 15:04 schrieb Ralph Ernstorfer:
>>>>
>>>>     Dear all,
>>>>
>>>>     SPECS (Marko Wietstruk & Oleksy) and Surface Concepts (Michael
>>>>     Kallmayer) will come next week Tuesday & Wednesday. We will
>>>>     start Tuesday, 20.11., 8 am.
>>>>
>>>>     The work plan looks roughly like this:
>>>>
>>>>     ·        venting of the chamber (in retracted position),
>>>>     removal of the springs supporting the METIS translation.
>>>>
>>>>     ·        rotation of the METIS extractor and installation of
>>>>     the unshielded HV cable. The HV feedthrough will be installed
>>>>     in another port. responsible person: Marko
>>>>
>>>>     ·        opening of the METIS on the detector side, remove the
>>>>     TOF chamber, unmount the TOF tube, reinstall TOF chamber,
>>>>     perform magnetic field measurements inside the TOF chamber.
>>>>     responsible person: Michael (he will arrive Tuesday around
>>>>     lunch time).
>>>>
>>>>     ·        the suspicious component is a µ-metal inlay bridging
>>>>     the flange connecting the TOF chamber with the so-called
>>>>     spin-replacement chamber. I think it would be good to visually
>>>>     inspect the mechanical connection of the inlay with a camera
>>>>     brought inside the TOF chamber.
>>>>
>>>>     ·        in case magnetic fields enter at the inlay, we will
>>>>     try mechanical deformation to improve the magnetic closure.
>>>>     Otherwise a measurement of the inner geometry needs to be done
>>>>     and a new µ-metal inlay needs to be fabricated.
>>>>
>>>>     ·        goal: magnetic fields inside the TOF tube <= 0.1 µT
>>>>
>>>>       * another aspect to clarify is the origin of the fairly
>>>>         strong magnetic fields outside the chamber and the apparent
>>>>         magnetization of the METIS tubes. Measurement of the
>>>>         magnetic fields in the vicinity of the detached TOF chamber
>>>>         and the fields at the position of the TOF chamber (while it
>>>>         is detached).
>>>>
>>>>     ·        FHI-internal: remove dropped sample from the analysis
>>>>     chamber.
>>>>
>>>>     Equipment:
>>>>
>>>>     ·        magnetic field sensor (SPECS)
>>>>
>>>>       * special wrenches for the hardly accessible 200 flange (SPECS)
>>>>
>>>>     ·        spools and power supply (SPECS)
>>>>
>>>>       * camera (FHI)
>>>>
>>>>     ·        non-magnetic screws for replacing the V2A screws (SPECS)
>>>>
>>>>     To be clarified before the visit:
>>>>
>>>>     ·        tool and procedure for demagnetization (?), SPECS
>>>>
>>>>       * accommodation for Michael
>>>>
>>>>     Cheers,
>>>>       Ralph
>>>>
>>>>     -- 
>>>>
>>>>     Ralph Ernstorfer                            ernstorfer at fhi-berlin.mpg.de <mailto:ernstorfer at fhi-berlin.mpg.de>
>>>>
>>>>     Research Group Structural and Electronic Surface Dynamics
>>>>
>>>>     ERC project FLATLAND
>>>>
>>>>     Fritz Haber Institute
>>>>
>>>>     Faradayweg 4-6                              Tel: +49 30 8413-5117
>>>>
>>>>     14195 Berlin                                Fax: +49 30 8413-5387
>>>>
>>>>     Germany
>>>>
>>>>     http://w0.rz-berlin.mpg.de/pc/ernstorfer/
>>>>
>>>>
>>>>
>>>> -- 
>>>> Ralph Ernstorfer                            ernstorfer at fhi-berlin.mpg.de <mailto:ernstorfer at fhi-berlin.mpg.de>
>>>> Research Group Structural and Electronic Surface Dynamics
>>>> ERC project FLATLAND
>>>> Fritz Haber Institute
>>>> Faradayweg 4-6                              Tel: +49 30 8413-5117
>>>> 14195 Berlin                                Fax: +49 30 8413-5387
>>>> Germany
>>>> http://w0.rz-berlin.mpg.de/pc/ernstorfer/
>>>
>>> -- 
>>> Ralph Ernstorfer                            ernstorfer at fhi-berlin.mpg.de
>>> Research Group Structural and Electronic Surface Dynamics
>>> ERC project FLATLAND
>>> Fritz Haber Institute
>>> Faradayweg 4-6                              Tel: +49 30 8413-5117
>>> 14195 Berlin                                Fax: +49 30 8413-5387
>>> Germany
>>> http://w0.rz-berlin.mpg.de/pc/ernstorfer/
>>> ----------------------------------------------------------------------
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>>> Geschaeftstaetigkeit gemaess der Datenschutz-Grundverordnung (DSGVO)
>>> [General Data Protection Regulation (GDPR)] der Europaeischen Union.
>>>
>>> _______________________________________________
>>> trARPES mailing list
>>> trARPES at fhi-lists.de
>>> http://fhi-lists.de/mailman/listinfo/trarpes
>> -- 
>> Ralph Ernstorfer                            ernstorfer at fhi-berlin.mpg.de
>> Research Group Structural and Electronic Surface Dynamics
>> ERC project FLATLAND
>> Fritz Haber Institute
>> Faradayweg 4-6                              Tel: +49 30 8413-5117
>> 14195 Berlin                                Fax: +49 30 8413-5387
>> Germany
>> http://w0.rz-berlin.mpg.de/pc/ernstorfer/
>>
>>
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> -- 
> SURFACE CONCEPT GmbH
>
>   
> Dr. Michael Kallmayer
>
> Produktmanager Elektronenoptik
>
>
> Am Sägewerk 23a
> D-55124 Mainz
>   
> phone: ++49 (0)6131 627 16 14
> fax: ++49 (0)6131 627 16 29
>
> kallmayer at surface-concept.de
> www.surface-concept.com
>
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-- 
Ralph Ernstorfer                            ernstorfer at fhi-berlin.mpg.de
Research Group Structural and Electronic Surface Dynamics
ERC project FLATLAND
Fritz Haber Institute
Faradayweg 4-6                              Tel: +49 30 8413-5117
14195 Berlin                                Fax: +49 30 8413-5387
Germany
http://w0.rz-berlin.mpg.de/pc/ernstorfer/


----------------------------------------------------------------------
Das FHI verarbeitet, speichert und loescht Daten im Rahmen seiner
Geschaeftstaetigkeit gemaess der Datenschutz-Grundverordnung (DSGVO)
[General Data Protection Regulation (GDPR)] der Europaeischen Union.

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