OSI BCAMs


The Brandeis CCD Angle Montor (BCAM) is an optical metrology instrument designed to measure the position and movement of objects in large experiments. Its design and all associated data acquisition hardware and software are open-source. You will find links to drawings, schematics, reports, and manuals at the BCAM Home Page. The BCAM was developed and manufactured by the Brandeis University High Energy Physics (BNDHEP) Department in the years 1999-2021 with funding from the United States Department of Energy.


Figure: A Black H-BCAM. We see the front camera lens in a brass holder. On either side are two laser diodes, both turned on for photo. Above and below the lense are the four white LEDs, turned off for the photo. The metalized serial number label is on the lid. The laser safety label is on the other side wall, as shown in this view.

Open Source Instruments (OSI) began manufacturing BCAMs for HEP experiments in 2004, and designed and built the first H-BCAM in 2012. OSI provided BCAMs for the following large alignment systems:

OSI no longer manufactures the original A-BCAM (Azimuthal BCAM, BNDHEP design for ATLAS) and P-BCAM (Polar BCAM, BNDHEP design for ATLAS) because the TC255P image sensor used by these devices is no longer available. The newer N-BCAM (New Small Wheel BCAM, BNDHEP design for ATLAS), D-BCAM (Double-Ended BCAM, BNDHEP design for ATLAS), and H-BCAM (OSI design for CERN) are in production so long as we still have reserves of the ICX424AL image sensor used by their cameras. Thereafter we will design new BCAMs around the newer CMOS image sensors that we believe are ready to provide the linearity and precision required for 5-μrad tracking of point sources.