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PMT Housing for Side-On Hamamatsu PMTs

  • Light-Tight Design Securely Holds PMT via Threaded Retaining Collar
  • 30 mm Cage and SM1 Lens Tube Compatible
  • Post Mountable via 8-32 (M4) and 1/4"-20 (M6) Taps

Application Idea


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Compatible Hamamatsu PMTs
• 1P21 • R11568 • R2693P • R5984 • R8486
• 1P21P • R11715-01 • R2949 • R636-10 • R8487
• 1P28 • R12829 • R3788 • R636P • R9110
• 1P28A • R12896 • R3896 • R6925 • R9110P
• 931A • R13096 • R4220 • R7154 • R9182-01
• 931B • R13456 • R4220P • R7446 • R9220
• R10491 • R1527 • R4332 • R7447 • R928
• R10454 • R1527P • R446 • R7447P • R928P
• R105 • R212 • R4632 • R7517 • R955
• R105UH • R212UH • R508 • R7518 • R955P
• R10699 • R2658 • R5108 • R7518P • R9876 
• R11540 • R2658P • R5983 • R758-10
• R11558 • R2693 • R5983P • R7639


  • Active Area of PMT Centered in SM1-Threaded Bore
  • Light-Tight Mounting of PMT into PXT1 Housing
  • Light-Tight Mounting of Filters and Imaging Optics Using SM1 (1.035"-40) Lens Tubes
  • Optical Axis Defined by Cage and Lens Tube Compatibility Simplifies Alignment
  • Easily Mount Imaging and Filtering Optics on the Optical Axis

The PXT1 provides a compact, light-tight mounting solution for integrating Ø1-1/8" barrel side on photomultiplier tubes (PMTs) into Thorlabs' SM1 (Ø1.035"-40) lens tubes and 30 mm cage systems, eliminating the need to design custom adapter plates for these PMTs. In addition, a wide range of adapters are available to support alternative mounting options. For post mounting, the PXT1 body features 8-32 and 1/4"-20 taps, while the PXT1/M has M4 and M6 taps. A complete list of compatible Ø1-1/8" barrel , side-on Hamamatsu PMTs is provided to the right.

To insert the PMT into the PXT1, first remove the retaining collar. As seen in the drawings below, the PMT is slid into the main body of the PXT1 PMT housing and then the retaining collar can be screwed on to lock the PMT in and provide a second light tight seal.

Solidwork Drawing of PMT in Housing
Solidworks Drawing of PMT in Housing
solidworks drawing cross section showing PMT in housing
Housing Cross Section

Posted Comments:
Sangsub Kim  (posted 2020-09-21 03:13:59.613)
Hamamtsu R9182-01 is marked as compatible with the PXT1 product. However, in the case of R9182-01, it seems that it will not fit into the PXT1 product because it has an insulation cover. I really want to know if R9182-01 is compatible with PXT1.
david.hill  (posted 2017-06-28 11:11:43.157)
Hello, I was wondering if this product will also fit Newport PMTs, like Newport #77348. Thanks
tfrisch  (posted 2017-08-03 12:11:29.0)
Hello, thank you for contacting Thorlabs. Looking at both drawings, it appears that that PMT has a larger diameter than our housing is designed to hold. I will reach out to you directly to discuss your application.
sdmt99  (posted 2015-04-12 23:17:43.713)
Hi, I have a Hamamatsu H10723 PMT which doesn't fit with your PMT housing. Maybe thorlabs could consider developing housings for the kind of PMT I mentioned?
jlow  (posted 2015-04-28 04:38:21.0)
Response from Jeremy at Thorlabs: Thank you for the feedback. We will look into providing housing for other Hamamatsu PMT.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
PXT1 Support Documentation
PXT1Customer Inspired!  PMT Housing, Side-On, 30 mm Cage and SM1 Compatible
+1 Qty Docs Part Number - Metric Price Available
PXT1/M Support Documentation
PXT1/MCustomer Inspired!  PMT Housing, Side-On, 30 mm Cage and SM1 Compatible, Metric
5-8 Days
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