Marco Kraan
@mjkraan.bsky.social
Curious Nikhef engineer who likes to show how beautiful the mechanics behind science can be
Impressive machining of the second (of 5) top part of the Liquid Nitrogen vessel for #ETpathfinder at @nikhef.bsky.social
Volume of this vessel will be 45L and will be filled with 25L liquid Nitrogen (N2) to cool the cryogenic shields in the four mirrors towers
youtube.com/shorts/2AdCE...
Volume of this vessel will be 45L and will be filled with 25L liquid Nitrogen (N2) to cool the cryogenic shields in the four mirrors towers
youtube.com/shorts/2AdCE...
LN2 vessel ETpathfinder
YouTube video by Marco Kraan
youtube.com
December 10, 2025 at 10:00 AM
Impressive machining of the second (of 5) top part of the Liquid Nitrogen vessel for #ETpathfinder at @nikhef.bsky.social
Volume of this vessel will be 45L and will be filled with 25L liquid Nitrogen (N2) to cool the cryogenic shields in the four mirrors towers
youtube.com/shorts/2AdCE...
Volume of this vessel will be 45L and will be filled with 25L liquid Nitrogen (N2) to cool the cryogenic shields in the four mirrors towers
youtube.com/shorts/2AdCE...
@nikhef.bsky.social (National Institute for Subatomic Physics) is almost ready for her Christmas dinner (end of year party) tomorrow (Dec 10)
December 9, 2025 at 6:12 PM
@nikhef.bsky.social (National Institute for Subatomic Physics) is almost ready for her Christmas dinner (end of year party) tomorrow (Dec 10)
One month ago the Beam Splitter (BS) tower was installed in the bottom part of the vacuum vessel at #ETpathfinder. Now that all filters have been tuned, the vacuum vessel can be closed.
@maastrichtu.bsky.social @nikhef.bsky.social @einsteintelescope.bsky.social
youtu.be/6-TxZI1W8tA
@maastrichtu.bsky.social @nikhef.bsky.social @einsteintelescope.bsky.social
youtu.be/6-TxZI1W8tA
Closing BS vacuum vessel @ ETpathfinder
YouTube video by Marco Kraan
youtu.be
December 5, 2025 at 11:43 AM
One month ago the Beam Splitter (BS) tower was installed in the bottom part of the vacuum vessel at #ETpathfinder. Now that all filters have been tuned, the vacuum vessel can be closed.
@maastrichtu.bsky.social @nikhef.bsky.social @einsteintelescope.bsky.social
youtu.be/6-TxZI1W8tA
@maastrichtu.bsky.social @nikhef.bsky.social @einsteintelescope.bsky.social
youtu.be/6-TxZI1W8tA
@nikhef.bsky.social is ready for Christmass
December 4, 2025 at 11:53 AM
@nikhef.bsky.social is ready for Christmass
This week a huge poster is installed in a busy @nikhef.bsky.social corridor where the R&D department is housed with a view to the Nikhef R&D setup at @cern.bsky.social H8 beamline:
youtube.com/shorts/nc8my...
youtube.com/shorts/nc8my...
Poster with a view to CERN
YouTube video by Marco Kraan
youtube.com
November 27, 2025 at 9:14 AM
This week a huge poster is installed in a busy @nikhef.bsky.social corridor where the R&D department is housed with a view to the Nikhef R&D setup at @cern.bsky.social H8 beamline:
youtube.com/shorts/nc8my...
youtube.com/shorts/nc8my...
A major replacement of all Uninterruptible Power Supplies (UPS) and batteries in the @nikhef.bsky.social (National Institute for Subatomic Physics) Data Center is underway.
youtube.com/shorts/ZB0Pv...
youtube.com/shorts/ZB0Pv...
Major replacement UPS & batteries at Nikhef Data Center
YouTube video by Marco Kraan
youtube.com
November 21, 2025 at 3:26 PM
A major replacement of all Uninterruptible Power Supplies (UPS) and batteries in the @nikhef.bsky.social (National Institute for Subatomic Physics) Data Center is underway.
youtube.com/shorts/ZB0Pv...
youtube.com/shorts/ZB0Pv...
After 12 years of faithful service in the LHC vacuum of @cern.bsky.social at @lhcb.bsky.social the two VELO detectors have returned 'home' in november 2025 at @nikhef.bsky.social khef and we want to exhibit them!
youtu.be/bzJk1xwMF5A
youtu.be/bzJk1xwMF5A
Exhibition LHCb VELO at Nikhef
YouTube video by Marco Kraan
youtu.be
November 18, 2025 at 12:09 PM
After 12 years of faithful service in the LHC vacuum of @cern.bsky.social at @lhcb.bsky.social the two VELO detectors have returned 'home' in november 2025 at @nikhef.bsky.social khef and we want to exhibit them!
youtu.be/bzJk1xwMF5A
youtu.be/bzJk1xwMF5A
Hoisting first (of 6) suspended tower (Beam Splitter Tower) at ETpathfinder @nikhef.bsky.social.
youtu.be/1u9dI1lVM_8
youtu.be/1u9dI1lVM_8
Hoisting first suspended tower @ ETpathfinder
YouTube video by Marco Kraan
youtu.be
November 13, 2025 at 9:36 AM
Hoisting first (of 6) suspended tower (Beam Splitter Tower) at ETpathfinder @nikhef.bsky.social.
youtu.be/1u9dI1lVM_8
youtu.be/1u9dI1lVM_8
Zie (en luister 🔊) hier de onthulling door Jop Vissers Vorstenbosch van z'n spectaculair dynamisch lichtkunstwerk op 16 oktober 2025 in de entreehal van @nikhef.bsky.social (National Institute for Subatomic Physics):
youtu.be/xCzHV0bpekc
Titel: Een Onwaarschijnlijk Super Event
youtu.be/xCzHV0bpekc
Titel: Een Onwaarschijnlijk Super Event
Onthulling Kunstwerk door Jop Visser Vorstenbosch
YouTube video by Marco Kraan
youtu.be
November 5, 2025 at 11:13 AM
Zie (en luister 🔊) hier de onthulling door Jop Vissers Vorstenbosch van z'n spectaculair dynamisch lichtkunstwerk op 16 oktober 2025 in de entreehal van @nikhef.bsky.social (National Institute for Subatomic Physics):
youtu.be/xCzHV0bpekc
Titel: Een Onwaarschijnlijk Super Event
youtu.be/xCzHV0bpekc
Titel: Een Onwaarschijnlijk Super Event
A week ago, on Thursday, October 30, 2025 @nikhef.bsky.social (National Institute for Subatomic Physics) celebrated its 50th anniversary with 250 participants, six external speakers, a panel discussion, an inspiring Nikhef video about Science & Society and the six former directors at the Rode Hoed:
November 5, 2025 at 10:55 AM
A week ago, on Thursday, October 30, 2025 @nikhef.bsky.social (National Institute for Subatomic Physics) celebrated its 50th anniversary with 250 participants, six external speakers, a panel discussion, an inspiring Nikhef video about Science & Society and the six former directors at the Rode Hoed:
See here the last installation day (8) of the spectacular Artwork by Jop Vissers Vorstenbosch, which was unveiled two and a half weeks ago in the lobby of the newly renovated @nikhef.bsky.social
Title: An Improbable Super Event
youtu.be/DF-3Li0kpVs
Title: An Improbable Super Event
youtu.be/DF-3Li0kpVs
DAY 8 - Installation Artwork Jop Vissers Vorstenbosch @ Nikhef
YouTube video by Marco Kraan
youtu.be
November 3, 2025 at 8:13 AM
See here the last installation day (8) of the spectacular Artwork by Jop Vissers Vorstenbosch, which was unveiled two and a half weeks ago in the lobby of the newly renovated @nikhef.bsky.social
Title: An Improbable Super Event
youtu.be/DF-3Li0kpVs
Title: An Improbable Super Event
youtu.be/DF-3Li0kpVs
See here the second to last day (7) of the installation of the spectacular Artwork by Jop Vissers Vorstenbosch, which was unveiled on October 16 in the lobby of the newly renovated @nikhef.bsky.social
Title: An Improbable Super Event
youtu.be/YXVkqFCC-rg
Title: An Improbable Super Event
youtu.be/YXVkqFCC-rg
DAY 7 - Installation Artwork Jop Vissers Vorstenbosch @ Nikhef
YouTube video by Marco Kraan
youtu.be
October 30, 2025 at 8:54 AM
See here the second to last day (7) of the installation of the spectacular Artwork by Jop Vissers Vorstenbosch, which was unveiled on October 16 in the lobby of the newly renovated @nikhef.bsky.social
Title: An Improbable Super Event
youtu.be/YXVkqFCC-rg
Title: An Improbable Super Event
youtu.be/YXVkqFCC-rg
See the sixh installation day (of eight) of the spectacular Artwork by Jop Vissers Vorstenbosch, which was unveiled on October 16 in the lobby of the newly renovated
@nikhef.bsky.social
(National Institute for Subatomic Physics)
Title: An Improbable Super Event
youtu.be/LVJxbnvrZu4
@nikhef.bsky.social
(National Institute for Subatomic Physics)
Title: An Improbable Super Event
youtu.be/LVJxbnvrZu4
DAY 6 - Installation Artwork Jop Vissers Vorstenbosch @ Nikhef
YouTube video by Marco Kraan
youtu.be
October 28, 2025 at 2:28 PM
See the sixh installation day (of eight) of the spectacular Artwork by Jop Vissers Vorstenbosch, which was unveiled on October 16 in the lobby of the newly renovated
@nikhef.bsky.social
(National Institute for Subatomic Physics)
Title: An Improbable Super Event
youtu.be/LVJxbnvrZu4
@nikhef.bsky.social
(National Institute for Subatomic Physics)
Title: An Improbable Super Event
youtu.be/LVJxbnvrZu4
See the fifth installation day (of eight) of the spectacular Artwork by Jop Vissers Vorstenbosch, which was unveiled last week (October 16) in the lobby of the newly renovated
@nikhef.bsky.social (National Institute for Subatomic Physics)
Title: An Improbable Super Event
youtu.be/iSO6RaL5Nmk
See the fifth installation day (of eight) of the spectacular Artwork by Jop Vissers Vorstenbosch, which was unveiled last week (October 16) in the lobby of the newly renovated
@nikhef.bsky.social (National Institute for Subatomic Physics)
Title: An Improbable Super Event
youtu.be/iSO6RaL5Nmk
DAY 5 - Installation Artwork Jop Vissers Vorstenbosch @ Nikhef
YouTube video by Marco Kraan
youtu.be
October 27, 2025 at 8:16 AM
See the fifth installation day (of eight) of the spectacular Artwork by Jop Vissers Vorstenbosch, which was unveiled last week (October 16) in the lobby of the newly renovated
@nikhef.bsky.social (National Institute for Subatomic Physics)
Title: An Improbable Super Event
youtu.be/iSO6RaL5Nmk
See the fifth installation day (of eight) of the spectacular Artwork by Jop Vissers Vorstenbosch, which was unveiled last week (October 16) in the lobby of the newly renovated
@nikhef.bsky.social (National Institute for Subatomic Physics)
Title: An Improbable Super Event
youtu.be/iSO6RaL5Nmk
See the fourth installation day (of eight) of the spectacular Artwork by Jop Vissers Vorstenbosch, which was unveiled last week (October 16) in the lobby of the newly renovated
@nikhef.bsky.social National Institute for Subatomic Physics)
Title: An Improbable Super Event
youtu.be/alTRlBFClyE
@nikhef.bsky.social National Institute for Subatomic Physics)
Title: An Improbable Super Event
youtu.be/alTRlBFClyE
DAY 4 - Installation Artwork Jop Vissers Vorstenbosch @ Nikhef
YouTube video by Marco Kraan
youtu.be
October 24, 2025 at 12:32 PM
See the fourth installation day (of eight) of the spectacular Artwork by Jop Vissers Vorstenbosch, which was unveiled last week (October 16) in the lobby of the newly renovated
@nikhef.bsky.social National Institute for Subatomic Physics)
Title: An Improbable Super Event
youtu.be/alTRlBFClyE
@nikhef.bsky.social National Institute for Subatomic Physics)
Title: An Improbable Super Event
youtu.be/alTRlBFClyE
See here the third installation day (of eight) of the spectacular Artwork by Jop Vissers Vorstenbosch, which was unveiled last week (October 16) in the lobby of the newly renovated @nikhef.bsky.social (National Institute for Subatomic Physics)
Title: An Improbable Super Event
youtu.be/-YDPfkIKlrU
Title: An Improbable Super Event
youtu.be/-YDPfkIKlrU
DAY 3 - Installation Artwork Jop Vissers Vorstenbosch @ Nikhef
YouTube video by Marco Kraan
youtu.be
October 23, 2025 at 10:05 AM
See here the third installation day (of eight) of the spectacular Artwork by Jop Vissers Vorstenbosch, which was unveiled last week (October 16) in the lobby of the newly renovated @nikhef.bsky.social (National Institute for Subatomic Physics)
Title: An Improbable Super Event
youtu.be/-YDPfkIKlrU
Title: An Improbable Super Event
youtu.be/-YDPfkIKlrU
See how well the new artwork by Jop Vissers Vorstenbosch is visible from outside @nikhef.bsky.social (National Institute for Subatomic Physics)
October 23, 2025 at 9:52 AM
See how well the new artwork by Jop Vissers Vorstenbosch is visible from outside @nikhef.bsky.social (National Institute for Subatomic Physics)
Here is a summary of the second day of the installation of the spectacular Artwork by Jop Vissers Vorstenbosch, which was unveiled last week (October 16) in the lobby of the newly renovated @nikhef.bsky.social
Title: An Improbable Super Event
youtu.be/gugNEdTZzFU
Title: An Improbable Super Event
youtu.be/gugNEdTZzFU
DAY 2 - Installation Artwork Job Vissers Vorstenbosch @ Nikhef
YouTube video by Marco Kraan
youtu.be
October 22, 2025 at 8:41 AM
Here is a summary of the second day of the installation of the spectacular Artwork by Jop Vissers Vorstenbosch, which was unveiled last week (October 16) in the lobby of the newly renovated @nikhef.bsky.social
Title: An Improbable Super Event
youtu.be/gugNEdTZzFU
Title: An Improbable Super Event
youtu.be/gugNEdTZzFU
Artist Jop Vissers Vorstenbosch installed last week a spectacular dynamic light painting in the lobby of the newly renovated @nikhef.bsky.social
See here a summary of the first day of installation, which took a total of 8 days.
Title: An Improbable Super Event
youtu.be/kqLgPRWTNio
See here a summary of the first day of installation, which took a total of 8 days.
Title: An Improbable Super Event
youtu.be/kqLgPRWTNio
DAY 1 - Installation Artwork Job Vissers Vorstenbosch @ Nikhef
YouTube video by Marco Kraan
youtu.be
October 21, 2025 at 9:46 AM
Artist Jop Vissers Vorstenbosch installed last week a spectacular dynamic light painting in the lobby of the newly renovated @nikhef.bsky.social
See here a summary of the first day of installation, which took a total of 8 days.
Title: An Improbable Super Event
youtu.be/kqLgPRWTNio
See here a summary of the first day of installation, which took a total of 8 days.
Title: An Improbable Super Event
youtu.be/kqLgPRWTNio
Our new @nikhef.bsky.social entrance is enriched last week with a spectacular artwork, 'Improbable super event' by Jop Vissers Vorstenbosch.
These are eight transparent paintings of particle tracks from the ALICE experiment at @cern.bsky.social and visualizations of two colliding black holes
These are eight transparent paintings of particle tracks from the ALICE experiment at @cern.bsky.social and visualizations of two colliding black holes
October 20, 2025 at 9:48 AM
Our new @nikhef.bsky.social entrance is enriched last week with a spectacular artwork, 'Improbable super event' by Jop Vissers Vorstenbosch.
These are eight transparent paintings of particle tracks from the ALICE experiment at @cern.bsky.social and visualizations of two colliding black holes
These are eight transparent paintings of particle tracks from the ALICE experiment at @cern.bsky.social and visualizations of two colliding black holes
The day after the unveiling of Jop Vissers Vorstenbosch's artwork in the entrance hall of @nikhef.bsky.social (National Institute for Subatomic Physics), Jop is still 'present' on video 😊
October 17, 2025 at 7:46 AM
The day after the unveiling of Jop Vissers Vorstenbosch's artwork in the entrance hall of @nikhef.bsky.social (National Institute for Subatomic Physics), Jop is still 'present' on video 😊
Today at 4:30 PM, the unveiling of Jop Vissers Vorstenbosch's artwork in the entrance hall of @nikhef.bsky.social (National Institute for Subatomic Physics): An incredibly super event
October 16, 2025 at 11:27 AM
Today at 4:30 PM, the unveiling of Jop Vissers Vorstenbosch's artwork in the entrance hall of @nikhef.bsky.social (National Institute for Subatomic Physics): An incredibly super event
Preparations at the entree of @nikhef.bsky.social (National Institute for Subatomic Physics) are underway before artist Jop Vissers Vorstenbosch install his new (tuned to Nikhef) Artwork in early October.
September 26, 2025 at 12:10 PM
Preparations at the entree of @nikhef.bsky.social (National Institute for Subatomic Physics) are underway before artist Jop Vissers Vorstenbosch install his new (tuned to Nikhef) Artwork in early October.
Watch the 'aftermovie' of the @nikhef.bsky.social (National Institute for Subatomic Physics) 50th anniversary party 🥳, held 3 months ago on June 17, 2025:
Catering & movie organized by Absolute Delicious
absolute-delicious.nl
Catering & movie organized by Absolute Delicious
absolute-delicious.nl
September 26, 2025 at 9:06 AM
Watch the 'aftermovie' of the @nikhef.bsky.social (National Institute for Subatomic Physics) 50th anniversary party 🥳, held 3 months ago on June 17, 2025:
Catering & movie organized by Absolute Delicious
absolute-delicious.nl
Catering & movie organized by Absolute Delicious
absolute-delicious.nl
M'n dierbare collega Michiel Jaspers is gisteren, na 49 jaar en 50 weken 😲 op @nikhef.bsky.social (National Institute for Subatomic Physics), met twee confetti knallen met pensioen gegaan:
youtu.be/LHbncW9BUo4
youtu.be/LHbncW9BUo4
Michiel Jaspers gaat met 2 knallen z'n pensionering in na 49 jaar Nikhef
YouTube video by Marco Kraan
youtu.be
August 20, 2025 at 9:00 AM
M'n dierbare collega Michiel Jaspers is gisteren, na 49 jaar en 50 weken 😲 op @nikhef.bsky.social (National Institute for Subatomic Physics), met twee confetti knallen met pensioen gegaan:
youtu.be/LHbncW9BUo4
youtu.be/LHbncW9BUo4