28th Conference on Computing in High Energy and Nuclear Physics (CHEP 2026)

We are now reaching 500 participants! Thank you very much for your interest in and support of CHEP 2026. We also extend our sincere thanks to your universities, research institutes, companies, and funding agencies for supporting your participation.

We would like to share a few updates:

(1) Opening Ceremony Survey
We are deeply honored that HRH Princess Maha Chakri Sirindhorn will join us for the first session on Monday, May 25, 2026.

If you wish to attend the opening ceremony, please complete the survey by Monday, May 18. You can find it under “Survey” → “Opening Ceremony” in Indico.

Due to security requirements, we must collect participant information for coordination with the immigration authorities and the Palace Office. On-site registration will not be accepted.

Further details are available here.

(2) Food & Beverage Menu
In response to dietary considerations, we have published the Food & Beverage Menu in advance.

(3) Payment Status
We are close to completing the verification of all payments, with only a few cases still being followed up with the bank. If you have completed the process on your side, please do not worry.

For those planning to pay on-site, we will provide further instructions shortly.

For new payments, the payment portal remains open. After completing your payment, please kindly contact the LOC to help us expedite the verification process.

Regarding receipts, we have started processing them and will provide further updates soon.

(4) Contribution (Talk/Poster) Preparation
Please refer to the guidelines here.

If you plan to print your poster in Thailand, there are several shops in MBK (about a 5-minute walk from the University) that are open on Sunday. See one of the print shop locations in the above guideline. Posters will remain on display throughout the conference, so please ensure they are ready for mounting by Monday at noon. The detailed poster presentation schedule will be shared soon.

We look forward to welcoming you in Bangkok in less than a month.

Payment and Receipt Update

+ Credit Card:
If you are still experiencing issues with credit card payments, one suggestion that has worked for several participants is to avoid networks with 2FA restrictions (e.g., try using your home internet or a mobile network). This has helped in several cases, particularly for US-based payments. If the issue persists, please contact the LOC. On-site payment by credit card will also be available.

+ Bank Transfer:
We currently have around 20 payments pending confirmation, particularly for transfers made between March 26–31 and after April 16. We are in contact with the bank to retrieve missing information and will update the status as soon as the payments are identified. Currently, your registration is approved, with a note on the organizer side pending payment confirmation.

+ Receipts:
Receipts will normally be provided during the conference. However, if you require a receipt in advance or need to add some specific information, such as a VAT number, we can arrange this. Please complete the Receipt survey under the “Survey” section in the left menu.

+ If you are unable to participate in the conference and would like to transfer your contribution (talk or poster), please contact the CHEP PC and your track conveners as soon as possible. We kindly ask that speaker updates be completed by April 24. For posters, we will assign specific presentation slots. With updated information, we can avoid scheduling the same person for multiple posters within the same time slot.

The timetable is now available.

The early-bird registration has been extended to April 5, 23.59 BKK.

+ To help you prepare the contribution, guidelines are available in Practical Information >> Prepare your contributions.

+ Share your plan before/during/after the conference in Information >> Share your plan

+ If your payment has been made via TPP or bank transfer, please note that it may take at least one week (or longer) for us to receive confirmation. We currently request status updates from the bank twice a week. Please do not be concerned if your transfer has been completed, but the status has not yet been updated. If any issue occurs, the funds will be returned to your account. We will also honor the early-bird rate should you need to retry the payment.

+ Payment with card: Status update for people who paid by March 25, 2026, 12:14 AM (BKK).  If your payment is successful but registration is pending, please contact LOC.

+ Even if you (or your management team) make the payment directly via TPP or bank transfer, please ensure that you upload the payment slip or a screenshot in the payment portal. Selecting “Bank Transfer” will guide you to the page where you can upload the supporting document.

Booking ticket with Thai Airways with special offers here.

+ Invitation letter + visa support letter: Issue upto #Reg ID 248. The remaining by this week.
+ Payment with Transfer: We are working with the bank on transfer information for those who have already transferred.

• If you need a beneficiary, please use the following information: 
  
  • Chula Unisearch, Chulalongkorn University
  • 254 Research Building Floor 3-4, Chulalongkorn University, Phayathai Rd.,Patumwan, Bangkok 10330

+ For CERN, you may pay with TPP (Third Party Payment) using

• Supplier name:    CHULALONGKORN UNIVERSITY FACULTY OF SCIENCE(CHULAUNISEARCH) , 254 Research Building Floor 4 Phayathai Road Pathumwan, 10330 BANGKOK, TH (UNI329, MA01)
  
• Invoice reference: Reg ID.

All CHEP emails and contact names are available here (or under contact on the left menu).

We are starting to send out the invitation letter. For the invoice or any special document, please contact LOC (chep2026-info[-AT-]chula.ac.th). It is important to note that if you are not listed on any abstracts and don't use an institutional email address (University or research institute), the LOC can't issue you an invitation letter. 

Regarding the visa application letter, we will provide it only for participants whose nationalities are not eligible for visa exemption when entering Thailand. Please check the details at the Thai Embassy in your country or the visa information page here.

The LOC is closely monitoring the situation in the Middle East. For participants traveling from EU countries, we recommend taking a direct flight from a major European city to Bangkok. For those traveling from the United States, you may choose to fly either over the Pacific (maybe with a connection in Japan, China, Taiwan, or Korea) or over the Atlantic (with a connection in a major European city).